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Zeolites in Pyroclastic Deposits in Southeastern Tenerife (Canary Islands)
- J. E. Garcia Hernandez, J. S. Notario del Pino, M. M. Gonzalez Martin, F. Hernan Reguera, J. A. Rodriguez Losada
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- Journal:
- Clays and Clay Minerals / Volume 41 / Issue 5 / October 1993
- Published online by Cambridge University Press:
- 28 February 2024, pp. 521-526
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The chemical and the mineralogical composition of a group of pumiceous tuffs associated with recent salic volcanic episodes from Tenerife (Canary Islands) have been studied. The investigation focused on the two main types of pyroclastic deposits of the zone: ash-flows and ash-falls. The samples can be classified chemically as trachytic and phonolitic rocks with an intermediate silica content and a high percentage of alkali cations (Na+ and K+). The mineralogical composition, determined by X-ray diffraction, scanning electron microscopy, and optical microscopy, shows the occurrence of zeolites (mainly phillipsite, with lesser chabazite and analcime), associated with the parent glass. K-feldspar (sanidine) and calcite are accessory minerals. Zeolites are significantly more abundant in the ash-flow deposits. Zeolite formation by hydrothermal weathering in closed-system conditions varies according to the nature and the origin of the pyroclastic deposits. Tenerife phillipsites differ from typical diagenetic, lacustrine, and deep-sea phillipsites, both in chemical and mineralogical features. Alkali cations exceed divalent cations in the unit-cell that, assuming a monoclinic symmetry, has the following parameters: a = 8.46–10.55 Å, b = 14.21–14.40 Å, c = 7.80–8.70 Å, and β = 105°–110°.
Radiation and Chemical Program Research for Multi-Utility and Repurposed Countermeasures: A US Department of Health and Human Services Agencies Perspective
- Carmen I. Rios, Efrain E. Garcia, Thomas S. Hogdahl II, Mary J. Homer, Narayan V. Iyer, Judith W. Laney, Shannon G. Loelius, Merriline M. Satyamitra, Andrea L. DiCarlo
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- Journal:
- Disaster Medicine and Public Health Preparedness / Volume 18 / 2024
- Published online by Cambridge University Press:
- 22 February 2024, e35
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Although chemical and radiological agents cause toxicity through different mechanisms, the multiorgan injuries caused by these threats share similarities that convene on the level of basic biological responses. This publication will discuss these areas of convergence and explore “multi-utility” approaches that could be leveraged to address common injury mechanisms underlying actions of chemical and radiological agents in a threat-agnostic manner. In addition, we will provide an overview of the current state of radiological and chemical threat research, discuss the US Government’s efforts toward medical preparedness, and identify potential areas for collaboration geared toward enhancing preparedness and response against radiological and chemical threats. We also will discuss previous regulatory experience to provide insight on how to navigate regulatory paths for US Food and Drug Administration (FDA) approval/licensure/clearance for products addressing chemical or radiological/nuclear threats. This publication follows a 2022 trans-agency meeting titled, “Overlapping Science in Radiation and Sulfur Mustard Exposures of Skin and Lung: Consideration of Models, Mechanisms, Organ Systems, and Medical Countermeasures,” sponsored by the National Institute of Allergy and Infectious Diseases (NIAID), a part of the National Institutes of Health (NIH). Discussions from this meeting explored the overlapping nature of radiation and chemical injury and spurred increased interest in how preparedness for one threat leads to preparedness for the other. Herein, subject matter experts from the NIAID and the Biomedical Advanced Research and Development Authority (BARDA), a part of the Administration for Strategic Preparedness and Response (ASPR), summarize the knowledge gained from recently funded biomedical research, as well as insights from the 2022 meeting. These topics include identification of common areas for collaboration, potential use of biomarkers of injury to identify injuries caused by both hazards, and common and widely available treatments that could treat damage caused by radiological or chemical threats.
Somatic multicomorbidity and disability in patients with psychiatric disorders in comparison to the general population: a quasi-epidemiological investigation in 54,826 subjects from 40 countries (COMET-G study)
- Konstantinos N. Fountoulakis, Grigorios N. Karakatsoulis, Seri Abraham, Kristina Adorjan, Helal Uddin Ahmed, Renato D. Alarcón, Kiyomi Arai, Sani Salihu Auwal, Michael Berk, Sarah Bjedov, Julio Bobes, Teresa Bobes-Bascaran, Julie Bourgin-Duchesnay, Cristina Ana Bredicean, Laurynas Bukelskis, Akaki Burkadze, Indira Indiana Cabrera Abud, Ruby Castilla-Puentes, Marcelo Cetkovich, Hector Colon-Rivera, Ricardo Corral, Carla Cortez-Vergara, Piirika Crepin, Domenico De Berardis, Sergio Zamora Delgado, David De Lucena, Avinash De Sousa, Ramona Di Stefano, Seetal Dodd, Livia Priyanka Elek, Anna Elissa, Berta Erdelyi-Hamza, Gamze Erzin, Martin J. Etchevers, Peter Falkai, Adriana Farcas, Ilya Fedotov, Viktoriia Filatova, Nikolaos K. Fountoulakis, Iryna Frankova, Francesco Franza, Pedro Frias, Tatiana Galako, Cristian J. Garay, Leticia Garcia-Álvarez, Maria Paz García-Portilla, Xenia Gonda, Tomasz M. Gondek, Daniela Morera González, Hilary Gould, Paolo Grandinetti, Arturo Grau, Violeta Groudeva, Michal Hagin, Takayuki Harada, Tasdik M. Hasan, Nurul Azreen Hashim, Jan Hilbig, Sahadat Hossain, Rossitza Iakimova, Mona Ibrahim, Felicia Iftene, Yulia Ignatenko, Matias Irarrazaval, Zaliha Ismail, Jamila Ismayilova, Asaf Jakobs, Miro Jakovljević, Nenad Jakšić, Afzal Javed, Helin Yilmaz Kafali, Sagar Karia, Olga Kazakova, Doaa Khalifa, Olena Khaustova, Steve Koh, Svetlana Kopishinskaia, Korneliia Kosenko, Sotirios A. Koupidis, Illes Kovacs, Barbara Kulig, Alisha Lalljee, Justine Liewig, Abdul Majid, Evgeniia Malashonkova, Khamelia Malik, Najma Iqbal Malik, Gulay Mammadzada, Bilvesh Mandalia, Donatella Marazziti, Darko Marčinko, Stephanie Martinez, Eimantas Matiekus, Gabriela Mejia, Roha Saeed Memon, Xarah Elenne Meza Martínez, Dalia Mickevičiūtė, Roumen Milev, Muftau Mohammed, Alejandro Molina-López, Petr Morozov, Nuru Suleiman Muhammad, Filip Mustač, Mika S. Naor, Amira Nassieb, Alvydas Navickas, Tarek Okasha, Milena Pandova, Anca-Livia Panfil, Liliya Panteleeva, Ion Papava, Mikaella E. Patsali, Alexey Pavlichenko, Bojana Pejuskovic, Mariana Pinto Da Costa, Mikhail Popkov, Dina Popovic, Nor Jannah Nasution Raduan, Francisca Vargas Ramírez, Elmars Rancans, Salmi Razali, Federico Rebok, Anna Rewekant, Elena Ninoska Reyes Flores, María Teresa Rivera-Encinas, Pilar Saiz, Manuel Sánchez de Carmona, David Saucedo Martínez, Jo Anne Saw, Görkem Saygili, Patricia Schneidereit, Bhumika Shah, Tomohiro Shirasaka, Ketevan Silagadze, Satti Sitanggang, Oleg Skugarevsky, Anna Spikina, Sridevi Sira Mahalingappa, Maria Stoyanova, Anna Szczegielniak, Simona Claudia Tamasan, Giuseppe Tavormina, Maurilio Giuseppe Maria Tavormina, Pavlos N. Theodorakis, Mauricio Tohen, Eva Maria Tsapakis, Dina Tukhvatullina, Irfan Ullah, Ratnaraj Vaidya, Johann M. Vega-Dienstmaier, Jelena Vrublevska, Olivera Vukovic, Olga Vysotska, Natalia Widiasih, Anna Yashikhina, Panagiotis E. Prezerakos, Daria Smirnova
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- Journal:
- CNS Spectrums / Volume 29 / Issue 2 / April 2024
- Published online by Cambridge University Press:
- 25 January 2024, pp. 126-149
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Background
The prevalence of medical illnesses is high among patients with psychiatric disorders. The current study aimed to investigate multi-comorbidity in patients with psychiatric disorders in comparison to the general population. Secondary aims were to investigate factors associated with metabolic syndrome and treatment appropriateness of mental disorders.
MethodsThe sample included 54,826 subjects (64.73% females; 34.15% males; 1.11% nonbinary gender) from 40 countries (COMET-G study). The analysis was based on the registration of previous history that could serve as a fair approximation for the lifetime prevalence of various medical conditions.
ResultsAbout 24.5% reported a history of somatic and 26.14% of mental disorders. Mental disorders were by far the most prevalent group of medical conditions. Comorbidity of any somatic with any mental disorder was reported by 8.21%. One-third to almost two-thirds of somatic patients were also suffering from a mental disorder depending on the severity and multicomorbidity. Bipolar and psychotic patients and to a lesser extent depressives, manifested an earlier (15–20 years) manifestation of somatic multicomorbidity, severe disability, and probably earlier death. The overwhelming majority of patients with mental disorders were not receiving treatment or were being treated in a way that was not recommended. Antipsychotics and antidepressants were not related to the development of metabolic syndrome.
ConclusionsThe finding that one-third to almost two-thirds of somatic patients also suffered from a mental disorder strongly suggests that psychiatry is the field with the most trans-specialty and interdisciplinary value and application points to the importance of teaching psychiatry and mental health in medical schools and also to the need for more technocratically oriented training of psychiatric residents.
Fault-Hosted Palygorskite from the Serrata De Níjar Deformation Zone (SE Spain)
- E. García-Romero, M. Suárez, R. Oyarzun, J. A. López-García, M. Regueiro
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- Clays and Clay Minerals / Volume 54 / Issue 3 / June 2006
- Published online by Cambridge University Press:
- 01 January 2024, pp. 324-332
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Palygorskite fibers growing along fault planes in the outcrops of a large fault zone in SE Spain (Carboneras Fault Zone: CFZ; Serrata de Níjar) were studied by X-ray diffraction, scanning electron microscopy-energy dispersive X-ray analysis, and transmission electron microscopy-analytical electron microscopy. The structural formulae, calculated per half unit-cell, is: Si7.95Al0.05O20(Al1.93Fe0.08Mg1.92) (OH)2(OH2)4Na0.09K0.01Ca0.034(H2O). The samples have minor tetrahedral substitutions, with Mg/Al ratios close to one, and contain very small amounts of Fe3+. The number of octahedral cations per half unit-cell is 3.93. The fault-hosted palygorskite shows macroscopic ductile features including incipient foliation. Based on field and laboratory observations, as well as on regional geological evidence indicating the existence of widespread hydrothermal processes along the Serrata de Níjar and surrounding areas, we suggest that palygorskite may have formed during ongoing deformation in the CFZ, as a precipitate from Mg-rich hydrothermal fluids.
The Kaolin and Bentonite Deposit of Tamame De Sayago (Zamora, Spain): Mineralogy, Geochemistry, and Genesis
- E. M. Manchado, M. Suárez, E. García-Romero
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- Journal:
- Clays and Clay Minerals / Volume 71 / Issue 4 / August 2023
- Published online by Cambridge University Press:
- 01 January 2024, pp. 478-495
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A geological, mineralogical, and geochemical characterization of the Tamame de Sayago (Zamora, Spain) deposit was carried out with the aim of knowing the conditions that facilitated the genesis in the same deposit of kaolinite and smectites. The alteration processes affecting a Variscan granite were deduced throughout the study of a very wide group of representative samples by X-ray diffraction (XRD), scanning electron microscopy (SEM), chemical analyses of major, minor, and trace elements, as well as δ18O, δ34S stable isotope and K/Ar dating analyses. In addition, 2D and 2.5D graphs of the kaolinite and smectite isoconcentrations were obtained from core data. According to the color and texture, two different clayey rock types were identified and named as homogeneous alteration zones (ZAHO) and heterogeneous alteration zones (ZAHE). The ZAHO are regoliths in which the granite texture is preserved, and the feldspars are almost completely kaolinized. In the ZAHE, the original texture of the granitic rock is lost, and the main clay mineral is smectite. The mineralogical composition is similar, with kaolinite, smectite, mica, quartz, scarce feldspar, and occasionally natroalunite and APS (aluminum-phosphate-sulphate); however, the mineral concentration varies considerably because ZAHO are rich in kaolin areas whereas ZAHE are bentonitic areas. Both rock types contain numerous veins and nodules. The weathering of the Paleozoic granite alongside the absence of sedimentation during the Mesozoic led to the formation of kaolinite that is preserved in ZAHO materials. Nonetheless, during the Cretaceous–Tertiary transit, the conditions of tectonic stability varied. Late Variscan faults reactivated which allowed the percolation of Mg- and Ca-rich hydrothermal fluids through the already kaolinized granite, increasing the alteration of the primary silicates and leading to the formation of smectites in ZAHE materials. The amount of smectites is greater closer to the faults. The stable isotopes indicate the meteoric nature of the low-temperature hydrothermal fluids. The K/Ar data obtained from the natroalunite of veins indicate that those hydrothermal fluids circulated in different pulses from 66.4 ± 1.7 to 58.8 ± 1.5 Ma, as a minimum. Those ages are coincident with the first formation stages of the Duero Basin.
On the Chemical Composition of Sepiolite and Palygorskite
- E. Garciá-Romero, M. Suárez
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- Clays and Clay Minerals / Volume 58 / Issue 1 / February 2010
- Published online by Cambridge University Press:
- 01 January 2024, pp. 1-20
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Many studies of the chemical composition of sepiolite and palygorskite have been carried out using analytical electron microscopy (AEM). According to the literature, a compositional gap exists between sepiolites and palygorskites, but the results presented here show that they may all be intermediate compositions between two extremes. The results of >1000 AEM analyses and structural formulae have been obtained for the samples studied (22 samples of sepiolite and 21 samples of palygorskite) and indicate that no compositional gap exists between sepiolite and palygorskite. Sepiolite occupies the most magnesic and trioctahedral extreme and palygorskite the most aluminic-magnesic and dioctahedral extreme. Sepiolite and palygorskite with intermediate compositions exist between the two pure extremes: (1) sepiolite with a small proportion of octahedral substitution; (2) palygorskite with a very wide range of substitution (the pure dioctahedral extreme is unusual); and (3) intermediate forms, Al-sepiolite and Mg-palygorskite with similar or the same chemical composition. The chemical compositions of the intermediate forms can be so similar that a certain degree of polymorphism exists between Al-sepiolite and Mg-palygorskite.
Crystallochemical characterization of the palygorskite and sepiolite from the Allou Kagne deposit, Senegal
- E. García-Romero, M. Suárez, J. Santarén, A. Alvarez
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- Clays and Clay Minerals / Volume 55 / Issue 6 / December 2007
- Published online by Cambridge University Press:
- 01 January 2024, pp. 606-617
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The Allou Kagne (Senegal) deposit consists of different proportions of palygorskite and sepiolite, and these are associated with small quantities of quartz and X-ray amorphous silica as impurities. No pure palygorskite or sepiolite has been recognized by X-ray diffraction. Textural and microtextural features indicate that fibrous clay minerals of the Allou Kagne deposit were formed by direct precipitation from solution. Crystal-chemistry data obtained by analytical/transmission electron microscopy (AEM/TEM) analyses of isolated fibers show that the chemical composition of the particles varies over a wide range, from a composition corresponding to palygorskite to a composition intermediate between that of sepiolite and palygorskite, but particles with a composition corresponding to sepiolite have not been found. Taking into account the results from selected area electron diffraction and AEM-TEM, fibers of pure palygorskite and sepiolite have been found but it cannot be confirmed that all of the particles analyzed correspond to pure palygorskite or pure sepiolite because both minerals can occur together at the crystallite scale. In addition, the presence of Mg-rich palygorskite and very Al-rich sepiolite can be deduced.
It is infrequent in nature that palygorskite and sepiolite appear together because the conditions for simultaneous formation of the two minerals are very restricted. The chemical composition of the solution controls the formation of the Allou Kagne sepiolite and palygorskite. The wide compositional variation appears as a consequence of temporary variations of the chemical composition of the solution.
Characteristics of a Mg-palygorskite in Miocene rocks, Madrid Basin (Spain)
- E. García-Romero, M. Suárez Barrios, M. A. Bustillo Revuelta
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- Clays and Clay Minerals / Volume 52 / Issue 4 / August 2004
- Published online by Cambridge University Press:
- 01 January 2024, pp. 484-494
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Palygorskite in Miocene mudstones, palustrine limestones and calcretes from the Esquivias locality (Madrid Basin, Spain) has been analyzed by X-ray diffraction, infrared spectroscopy, scanning electron microscopy, transmission electron microscopy and analytical electron microscopy to determine its characteristics and chemical composition. Other palygorskites from the literature are used as references. The mean structural formula obtained from the analysis of isolated particles is (Si7.87Al0.13)O20()(OH)2(OH2)4(Ca0.02K0.05Na0.08). This palygorskite has the largest Mg content reported in the literature, and it seems that, chemically, it fills the ‘compositional gap’ existing between sepiolite and palygorskite. Infrared spectroscopy reveals the absence of trioctahedral Mg and therefore the possibility of the existence of magnesic clusters in the ribbons is discounted. An homogeneous distribution of the octahedral cations (Al, Fe3+ and Mg) along the ribbons is proposed.
41 Concussion History, Physical Activity, and Athletic Status Predict Subjective but not Objective Executive Functioning
- Madeline M. Doucette, Juan P. Sanchez, Ryan E. Rhodes, Mauricio A. Garcia-Barrera
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- Journal:
- Journal of the International Neuropsychological Society / Volume 29 / Issue s1 / November 2023
- Published online by Cambridge University Press:
- 21 December 2023, pp. 914-915
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Objective:
Factors such as physical activity and sports participation may have a positive effect on executive functioning. However, people involved in sports are at a higher risk of experiencing a concussion, which may have a detrimental effect. Previous research has yet to investigate those combined negative and positive effects while also utilizing a comprehensive assessment of executive function. This study aims precisely to examine the effects of physical activity, athletic status and concussion history on subjective (e.g., questionnaire) and objective measures (e.g., latent variables) of three well-established components of executive function (i.e., inhibiting, shifting, and updating) in young adults.
Participants and Methods:247 Canadian university students (ages 18 - 25; 83% female) completed a remote assessment of executive function involving nine computerized tasks and a behavioural self-report, in addition to demographic questionnaires and items assessing weekly physical activity, athletic status, and concussion history. A linear regression analysis was used to assess the effects of the predictor variables (age, sex, concussion history, physical activity and athletic status) on subjective reporting of executive functioning using the Executive Function Index. Furthermore, structural equation modelling (SEM) was used to predict objective executive function using a three-factor model (shifting, updating, inhibition).
Results:The three-factor measurement model of executive function fit the data adequately: x2 = 26.10, df = 17, p = 0.07, CFI = 0.97, TLI = 0.95, RMSEA = 0.05 [90% CI: 0.00-0.09], SRMR = 0.04. Then, the three-factor SEM of executive function also fit the data adequately: X2 = 66.38, df = 51, p = 0.07, CFI = 0.95, TLI = 0.93, RMSEA = 0.04 [90% CI: 0.00-0.06], SRMR = 0.05. Using SEM, no direct relationship was found between the factors of executive function and the predictor variables (i.e., age, physical activity, concussion history, and athletic status). Sex was significantly related to inhibition (b = 0.52, p = 0.02), such that males had greater inhibition. For the regression, physical activity (b = 0.09, p < .01), concussion history (b = 3.29, p < .05) and athletic status (b = -4.01, p < .05) were found to be significant predictors for the Executive Function Index.
Conclusions:Concussion history, physical activity, and athletic status were all predictive of subjective but not objective measures of executive function. Interestingly, these findings align with previous research that demonstrated performance-based executive function measures often do not align with self-report measures, which may suggest they are complementary but measure slightly different aspects of the underlying executive function construct. Mixed findings in the extant literature regarding sex differences and executive function require continued research to understand better the relationship and mechanisms behind the sex differences in inhibition. In summary, these findings offer support for the differentiation between subjective and objective measures of executive function when investigating their relationship with physical activity, sport participation, concussion history, age and sex.
1 Associations of Locus of Control and Memory Self-Awareness in Older Adults with and without MCI
- Mary E Garcia, Jeanine M Parisi, Sarah Cook, Ian McDonough, Alexandra J Weigand, Alexandra L Clark, Michael Marsiske, Kelsey R Thomas
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- Journal:
- Journal of the International Neuropsychological Society / Volume 29 / Issue s1 / November 2023
- Published online by Cambridge University Press:
- 21 December 2023, pp. 676-677
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Objective:
While loss of insight into one’s cognitive impairment (anosognosia) is a feature in Alzheimer’s disease dementia, less is known about memory self-awareness in cognitively unimpaired (CU) older adults or mild cognitive impairment (MCI) or factors that may impact self-awareness. Locus of control, specifically external locus of control, has been linked to worse cognitive/health outcomes, though little work has examined locus of control as it relates to self-awareness of memory functioning or across cognitive impairment status. Therefore, we examined associations between locus of control and memory self-awareness and whether MCI status impacted these associations.
Participants and Methods:Participants from the Advanced Cognitive Training for Independent and Vital Elderly (ACTIVE) study (mean age=73.51; 76% women; 26% Black/African American) were classified as CU (n=2177) or MCI (amnestic n=313; non-amnestic n=170) using Neuropsychological Criteria. A memory composite score measured objective memory performance and the Memory Functioning Questionnaire measured subjective memory. Memory self-awareness was defined as objective memory minus subjective memory, with positive values indicating overreporting of memory difficulties relative to actual performance (hypernosognosia) and negative values indicating underreporting (hyponosognosia). Internal (i.e., personal skills/attributes dictate life events) and external (i.e., environment/others dictate life events) locus of control scores came from the Personality in Intellectual Aging Contexts Inventory. General linear models, adjusting for age, education, sex/gender, depressive symptoms, general health, and vocabulary examined the effects of internal and external locus of control on memory self-awareness and whether MCI status moderated these associations.
Results:Amnestic and non-amnestic MCI participants reported lower internal and higher external locus of control than CU participants. There was a main effect of MCI status on memory self-awareness such that amnestic MCI participants showed the greatest degree of hyponosognosia/underreporting, followed by non-amnestic MCI, and CU participants slightly overreported their memory difficulties. While, on average, participants were fairly accurate at reporting their degree of memory difficulty, internal locus of control was negatively associated with self-awareness such that higher internal locus of control was associated with greater underreporting (ß=-.127, 95% CI [-.164, -.089], p<.001). MCI status did not moderate this association. External locus of control was positively associated with self-awareness such that higher external locus of control was associated with greater hypernosonosia/overreporting (ß=.259, 95% CI [.218, .300], p<.001). Relative to CU, amnestic, but not non-amnestic, MCI showed a stronger association between external locus of control and memory self-awareness. Specifically, higher external locus of control was associated with less underreporting of cognitive difficulties in amnestic MCI (ß=.107, 95% CI [.006, .208], p=.038).
Conclusions:In CU participants, higher external locus of control was associated with greater hypernosognosia/overreporting. In amnestic MCI, the lower external locus of control associations with greater underreporting of objective cognitive difficulties suggests that perhaps reduced insight in some people with MCI may result in not realizing the need for external supports, and therefore not asking for help from others. Alternatively, in amnestic participants with greater external locus of control, perhaps the environmental cues/feedback translate to greater accuracy in their memory self-perceptions. Longitudinal analyses are needed to determine how memory self-awareness is related to future cognitive declines.
TIME SERIES OF SURFACE WATER DISSOLVED INORGANIC CARBON ISOTOPES FROM THE SOUTHERN CALIFORNIA BIGHT
- Niels E Hauksson, Xiaomei Xu, Shawn Pedron, Hector A Martinez, Christian B Lewis, Danielle S Glynn, Christopher Glynn, Noreen Garcia, Alessandra Flaherty, Katherine Thomas, Sheila Griffin, Ellen R M Druffel
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- Journal:
- Radiocarbon , First View
- Published online by Cambridge University Press:
- 19 September 2023, pp. 1-16
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Dissolved inorganic carbon (DIC) in ocean water is a major sink of fossil fuel derived CO2. Carbon isotopes in DIC serve as tracers for oceanic water masses, biogeochemical processes, and air-sea gas exchange. We present a timeseries of surface DIC δ13C and Δ14C values from 2011 to 2022 from Newport Beach, California. This is a continuation of previous timeseries (Hinger et al. 2010; Santos et al. 2011) that together provide an 18-year record. These data show that DIC Δ14C values have declined by 42‰ and that DIC δ13C values have declined by 0.4‰ since 2004. By 2020, DIC Δ14C values were within analytical error of nearby clean atmospheric CO2 Δ14C values. These long-term trends are likely the result of significant fossil fuel derived CO2 in surface DIC from air-sea gas exchange. Seasonally, Δ14C values varied by 3.4‰ between 2011 and 2022, where seasonal δ13C values varied by 0.7‰. The seasonal variation in Δ14C values is likely driven by variations in upwelling, surface eddies, and mixed layer depth. The variation in δ13C values appears to be driven by isotopic fractionation from marine primary producers. The DIC δ13C and Δ14C values record the influence of the drought that began in 2012, and a major upwelling event in 2016.
Impact of Hurricane Matthew on a Cohort of Adolescents With Asthma in North Carolina
- Scott A. Davis, Delesha M. Carpenter, Ceila E. Loughlin, Nacire Garcia, Betsy Sleath
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- Journal:
- Disaster Medicine and Public Health Preparedness / Volume 17 / 2023
- Published online by Cambridge University Press:
- 09 August 2023, e446
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Objective:
The aim of this study was to look at a cohort of adolescents who were already enrolled in a randomized controlled trial to see (1) how demographics were associated with hurricane impact, and (2) how hurricane impact was associated with reported asthma quality of life.
Methods:One hundred fifty-one adolescents ages 11-17 and their parents enrolled in a randomized controlled trial at 2 sites in southeastern North Carolina completed questions about asthma quality of life, demographics, and the impact of Hurricane Matthew.
Results:The most common effects of Hurricane Matthew were that the family’s home was damaged or flooded (32.5%), the school was damaged or flooded (31.8%), and the home had mold or mildew as a result of flooding or damage (25.8%). Problems with access to care were more common for families whose adolescent was non-White (P = 0.04), on Medicaid (P = 0.05), or if the family spoke Spanish at home (P < 0.001). Being affected by the hurricane was negatively associated with asthma quality of life.
Conclusions:Hurricane Matthew had significant impact on the health of adolescents with asthma in the affected region, especially in the most vulnerable populations. Providers should ensure that families of adolescents with asthma have a hurricane plan to mitigate impact on their children’s health.
Searching for bridges between psychopathology and real-world functioning in first-episode psychosis: a network analysis from the OPTiMiSE trial
- F. Dal Santo, E. Fonseca-Pedrero, M. P. García-Portilla, L. González-Blanco, P. A. Sáiz, S. Galderisi, G. M. Giordano, J. Bobes
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- Journal:
- European Psychiatry / Volume 66 / Issue S1 / March 2023
- Published online by Cambridge University Press:
- 19 July 2023, pp. S262-S263
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Introduction
Network analysis has been used to explore the interplay between psychopathology and functioning in psychosis, but no study has used dedicated statistical techniques to focus on the bridge symptoms connecting these domains.
ObjectivesThe current study aims to estimate the network of depressive, negative, and positive symptoms, general psychopathology, and real-world functioning in people with first-episode schizophrenia or schizophreniform disorder, focusing on bridge nodes.
MethodsBaseline data from the OPTiMiSE trial were analysed. The sample included 446 participants (age 40.0±10.9 years, 70% males). The network was estimated with a Gaussian graphical model (GGM), using scores on individual items of the Positive and Negative Syndrome Scale (PANSS), the Calgary Depression Scale for Schizophrenia (CDSS), and the Personal and Social Performance (PSP) scale. Stability, strength centrality, expected influence (EI), predictability, and bridge centrality statistics were computed. The top 20% scoring nodes on bridge strength were selected as bridge nodes.
ResultsNodes from different rating scales assessing similar psychopathological and functioning constructs tended to cluster together in the estimated network (Fig. 1). The most central nodes (EI) were Delusions, Emotional Withdrawal, Depression, and Depressed Mood. Bridge nodes included Depression, Conceptual Disorganisation, Active Social Avoidance, Delusions, Stereotyped Thinking, Poor Impulse Control, Guilty Feelings, Unusual Thought Content, and Hostility. Most of the bridge nodes belonged to the general psychopathology subscale of the PANSS. Depression (G6) was the bridge node with the highest value.
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ConclusionsThe current study provides novel insights for understanding the complex phenotype of psychotic disorders and the mechanisms underlying the development and maintenance of comorbidity and functional impairment after psychosis onset.
Disclosure of InterestNone Declared
Association between adverse childhood experiences and the number of suicide attempts in lifetime
- J. Andreo-Jover, E. Fernandez-Jimenez, J. Curto-Ramos, N. Angarita-Osorio, N. Roberto, A. De la Torre-Luque, A. Cebria, M. Diaz-Marsa, M. Ruiz-Veguillla, J. B. Bobes Garcia, M. Fe Bravo Ortiz, V. Perez Solá
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- Journal:
- European Psychiatry / Volume 66 / Issue S1 / March 2023
- Published online by Cambridge University Press:
- 19 July 2023, pp. S561-S562
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Introduction
Adverse childhood experiences (ACEs), defined as abuse, neglect, or a dysfunctional household in childhood, have been associated with suicidality (Fjeldsted et al., 2020). Every type of ACE has a direct impact on suicide ideation, self-harm and/or suicide attempt (Angelakis et al., 2019).
ObjectivesWe aim to quantify the association between types of ACEs (including emotional, physical, sexual abuse, and emotional and physical neglect) and the number of suicide attempts in lifetime.
MethodsWe included 748 patients who attempted suicide at least once. They were asked to complete the Columbia-Suicide Severity Rating Scale (CSSRS), and the Childhood Trauma Questionnaire-Short Form (CTQ-SF). Logistic regression models were run to assess the association between each ACE type and the number of suicide attempts.
ResultsPoisson univariate regression analyses show a linear trend in the relationship between having a higher number of suicide attempts and having suffered every ACE type in childhood (p<0.05). Our results show a lower percentage of previous suicide attempts among participants without ACEs, and an increasing tendency among patients with various types of ACEs. The rate of ACEs types is significantly higher in the group with previous suicide attempts than in the first-attempt group (p=0.000).
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ConclusionsThis study contributes to clarify the role of childhood trauma in the number of suicide attempts in lifetime. This has important implications for reducing suicide rates, and preventing future re-attempts. Further studies analysing every construct of childhood trauma may contribute to the detection of suicidal behaviour.
FundingsThis work was supported by the Instituto de Salud Carlos III (grant number: PI19/00941 SURVIVE) and co-funded by the European Union (grant numbers: COV20/00988, PI17/00768), the European Union’s Horizon 2020 research and innovation programme Societal Challenges (grant number: 101016127), and the Fundación Española de Psiquiatría y Salud Mental
AcknowledgementsSURVIVE project (PI19/00941)
KeywordsSuicide attempt, Adverse Childhood Experiences
ReferencesAngelakis, I., Gillespie, E. L., & Panagioti, M. (2019). Childhood maltreatment and adult suicidality: A comprehensive systematic review with meta-analysis. Psychological Medicine, 49(7), 1057-1078. https://doi.org/10.1017/S0033291718003823
Fjeldsted, R., Teasdale, T. W., & Bach, B. (2020). Childhood trauma, stressful life events, and suicidality in Danish psychiatric outpatients. Nordic Journal of Psychiatry, 74(4), 280-286. https://doi.org/10.1080/08039488.2019.1702096
Disclosure of InterestNone Declared
A cross-sectional descriptive study to assess the impact of the “open door” policy on patient satisfaction
- M. Campillo, J. Marti, L. Rius, S. Garcia Fernandez, M. Olivero, G. Sanchez Tomico, G. Brusco-Passalaqua, E. Pechuan, T. Vates, R. Sanchez
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- European Psychiatry / Volume 66 / Issue S1 / March 2023
- Published online by Cambridge University Press:
- 19 July 2023, p. S910
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Introduction
Since the beginning of the modern psychiatry the acute units have established a “locked door” policy. Some studies show that this condition may increase patient’s discomfort and affect the perception of health quality of care (Boyer L, 2009, Eur Psychiatry Dec;24(8):540-9). Lately, several European countries such as Germany, Switzerland and Spain are starting to implement the “open-door” policy but its impact on patient’s satisfaction is still unknown (Hochstrasser, L, Frontiers in Psychiatry, 9(57). https://doi.org/10.3389/fpsyt.2018.00057) .
ObjectivesTo help characterize the advantages of the “open-door” policy implemented in an acute inpatient psychiatric unit in order to assess the patient’s view of it.
MethodsThis is a descriptive observational study carried out at an inpatient psychiatric unit. Data were collected after the implementation of the open door policy on June 2019, assessing the patient satisfaction of 31 subjects who completed the SATISPSY-22 scale at the time of discharge. Results are described using the average and its standard deviation.
ResultsResults show scores in all items above 50 points, being the care team and the quality of care the most valued ones with 82 and 79 points respectively. The overall score is above 65 points (Fig. 1).
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ConclusionsIn line with previous studies, our data suggests that the main impact of the “open-door” policy implementation is on patients’ perception of the care, being Quality of care and satisfaction with the Staff the items with highest scores. This could be explained by patients trusting more in the Care team, which would help enhance the therapeutic relationship improving therapeutic adherence, treatment adequacy and the outcome. Nevertheless, the Feeling related to hospitalisation was found to be the item with the lowest score. This could mean strategies should focus on improving patient’s insight regarding their clinical state and their need to be admitted. Our study supports the hypothesis that open-door policy in acute psychiatric units is seen positively by patients and that further research should be carried.
Disclosure of InterestNone Declared
Differential diagnosis of late onset psychotic symptoms. A case report.
- J. Sánchez Rodríguez, S. Puyal González, M. Paz Otero, E. Lozano Bori, A. García Recio
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- European Psychiatry / Volume 66 / Issue S1 / March 2023
- Published online by Cambridge University Press:
- 19 July 2023, p. S1063
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Introduction
We present the case of a sixty-seven-year-old woman who is examined for the first time in the emergency room because of a nine-month clinical picture that involves psychotic symptoms. The patient exhibits persecutory delusions that started after she shared some private information on social media. These symptoms also entail emotional distress and behavioral disturbances. She has never experienced hallucinations, but she does present delusional interpretations of the environment. Her clinical history reveals abnormalities of premorbid personality, including paranoid and immature features.
Objectives(1) We will be carrying out a differential diagnosis of late onset psychotic symptoms. We will as well be exploring the concept of Paraphrenia and analyzing its differential features in order to stablish the most suitable diagnosis for the case.
(2) The relationship between abnormalities in premorbid personality and psychotic symptoms will be covered, reviewing the available literature on this matter, and relating it to the patient’s symptomatology.
MethodsA review of the patient’s clinical history will be carried out, considering her biography, the testimony of her family and the complementary tests performed during the hospitalization period.
A bibliographic review of the available scientific literature will also be developed involving disorders that could explain psychotic symptoms in the elderly, as well as the term Paraphrenia, which describes specific features in a psychotic episode but is not included in the diagnostic manuals.
Results(1) The symptomatology that our patient exhibits may be considered atypical given the late stage of its onset and its specific features.
(2) The case could be explained under the category of Delusional Disorder. From a psychopathological point or view, it could also fit under de diagnosis of Paraphrenia as described by Ravindran et al.
(3) Pathological personality traits were assessed in premorbid personality which included paranoid and immature features.
ConclusionsIt could be useful to review the concept of the “paranoid spectrum” as proposed by some authors regarding some patient’s psychotic symptoms that don’t exactly fit any of the nowadays diagnostic categories. “Paraphrenia” could be understood as a distinct clinical entity for patients who show psychotic disorders but keep affective warmth and lack though deterioration and grossly disorganized behavior.
Most patients with late life paranoid psychoses have abnormal premorbid personalities, most usually of schizoid or paranoid type. There’s a decent amount of consensus in viewing the premorbid personality as having been abnormal as an early marker of impending psychosis.
Reformulating the way we approach diagnosis of psychotic symptoms of late onset could help us identify vulnerable patients on a premorbid stage and better classify and understand atypical entities.
Disclosure of InterestNone Declared
An interesting clinical case. New therapies in Dissociative Identity Disorder.
- P. García Vázquez, E. Seijo Zazo, C. Vilellla Martin, A. Serrano García, C. M. Franch Pato, E. Martína Gil, C. Alvarez Vazquez
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- European Psychiatry / Volume 66 / Issue S1 / March 2023
- Published online by Cambridge University Press:
- 19 July 2023, pp. S970-S971
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Introduction
Dissociative identity disorder (DID) also referred as multiple personality disorder is a chronic post-traumatic condition. It is characterized according to DSM-5 by “disruption of identity characterized by two or more distinct personality states”, with “marked discontinuity in sense of self… accompanied by related alterations in affect, behavior, consciousness, memory, perception, cognition, and/or sensory-motor functioning.”
ObjectivesHere, we present a case of a 33-year-old Caucasian female with no psychiatric history until 2 years ago, privately. The patient is admitted to the Psychiatry Service due to worsening. During admission, consultations are made to the Neurology Service and the Neurophysiology Service, who request an electroencephalogram, an MRI and a brain scan, resulting in normality.
After discharge, she returns home with her parents, and the crisis become more frequent and of longer duration. She acknowledges that during these periods she is dominated by her alternate personality, which she is unaware of until her family informs her. This personality is a demon, who verbally assaults and even physically threatens her surroundings, and can hardly be controlled by the prayers of her family.
MethodsDespite psychopharmacological treatment, as well as the cognitive-behavioral therapy carried out by the patient for more than two years, there was no improvement. Once she comes to the consultation, it is decided to carry out a therapy guided by the central Rogerian attitudes, originating a process of empathic resonance of the therapist, which influences the experience of the patient. Three main interventions are carried out, the awareness of the disease, the regulation of the intensity of this experience, to maintain the attention and the exploration of what guides the change. After carrying out this intervention, the patient is currently asymptomatic.
ResultsCurrently, there are not evidence-based treatment guidelines. The most common approach is individual psychodynamic psychotherapy according to practice-based guidelines initiated by the International Society for the Study of Trauma and Dissociation.
To handle the present case, we used a model with two pillars, the patient’s commitment and the investigation of microprocesses within a process of experiential exploration, in which the therapist is a facilitator of reflective attention and experimental awareness.
ConclusionsThe torpid evolution suffered by the patient, with little clinical improvement to the interventions carried out, and the absence of evidence on the treatment, led to a therapeutic approach focused on the empathic resonance process of the therapist, with good results.
Disclosure of InterestNone Declared
Caring for Bierzo: A plan for improving motivation for health workers from Mental Health
- J. M. Pelayo-Terán, Y. Zapico-Merayo, S. Vega-García, M. E. García-Llamas, Z. Gutiérrez-Hervás, A. Castro-Bayón
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- Journal:
- European Psychiatry / Volume 66 / Issue S1 / March 2023
- Published online by Cambridge University Press:
- 19 July 2023, pp. S309-S310
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Introduction
Motivation is an essential determinant of performance, particularly for those working in difficult conditions, such as the conditions facing many health workers. The relationship between motivation and performance is influenced by the health workers’ organizational environment and social context. Many intrinsic and extrinsic factors may influence the impulse to head for and maintain and effort to achieve the objectives of the organization these may include acknowledgements, status and incentives, but also auto efficacy perception, personal growth, welfare and physical and mental health.
In the last years and particularly during COVID-19 pandemic health organizations have suffered a crisis of lack of motivation and high turnover rates in health professional, particularly among highly specialized professions.
Objectivesto develop a quality program to promote mental health and motivation, detect risk of mental disorders and improve communication skills in the health workers of the Health Area of El Bierzo (GASBI).
MethodsA committee with four members form the psychiatry and mental health service, two from the Quality and Security Unit and 1 from the Occupational Risk Prevention Service analyzed the GASBI with a SWOT-CAME matrix analysis. Actions to be implemented were ordered with a Hanlon method score according to a representative sample of the employees of GASBI.
ResultsThe CAME matrix recommended an offensive strategy, given a number of strengths and the opportunities for an administration sensible to new paradigms. The program proposed included 6 main lines (evaluation, access to mental health consultation, prevention of suicide behavior, resilience group, communication and relation groups and a group of actions to improve motivation and prevent burnout called “10 actions to dream together”, displayed in figures 1 and 2. The Hanlon classified suicide behaviour as the highest priority (score: 16,25 points), mental disorders the second (score: 13.75), then fatigue (13 p), burnout and resilience (12p) and the less prioritary was motivation (7 points). The project was displayed in a canvas business model (figure 3)
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ConclusionsMental health, fatigue, burnout and motivation of health workers is a complex problem that affect health organizations and quality of services. Mental Health service have an important role in the promotion of wellbeing and prevent burnout in the health system.
Disclosure of InterestNone Declared
A look back: Coenesthetic schizophrenia. A literature review.
- R. Galerón Guzmán, M. Huete Naval, E. Herrero Pellón, P. Albarracín Marcos, A. García Recio
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- European Psychiatry / Volume 66 / Issue S1 / March 2023
- Published online by Cambridge University Press:
- 19 July 2023, p. S1084
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Introduction
We present the case of a 19-year-old patient who experienced a nonexisting moving sensation, increasing size and painful sensation on tongue, jaw and skull bones. Likewise, the patient showed high anguish, psychomotor restlessness and low mood, in relation to somatic symptomatology; which severely interfered in his life, dropping his university studies and his social life. He also presented thoughts of being victim of a complot of his classmates.
ObjectivesTo present a case report and to review the literature of coenesthetic schizophrenia.
MethodsLiterature review of scientific articles searching in EMBASE and Pubmed. We considered articles in English and Spanish.
ResultsTreatment with oral aripiprazole and sertraline was started, with progressive clinical improvement, decreasing somatic sensations until they disappeared, as well as mood improvement and remission of anxiety and psychomotor restlessness.
Coenesthetic schizophrenia was first described in 1957 by Gerd Huber. It is characterized by bodily sensations often combined with affective disturbances. Other symptoms that occur frequently are affective, vegetative, motor and sensory alterations. Typical schizophrenic symptoms are limited to brief psychotic episodes.
ConclusionsWe consider knowledge of this entity important, given the differential clinical characteristics regarding to other presentations of schizophrenia, as well as the need to do a differential diagnosis with other disorders such as body dysmorphic disorder or hypochondriasis.
Disclosure of InterestNone Declared
Mirror exposure therapies: Effect of the distance to the mirror on the attentional pattern in a Virtual Reality immersive environment
- F.-A. Meschberger-Annweiler, M. Ascione, B. Porras-Garcia, H. Miquel, E. Exposito, E. Serrano-Troncoso, M. Carulla-Roig, M. Ferrer-Garcia, J. Gutierrez-Maldonado
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- European Psychiatry / Volume 66 / Issue S1 / March 2023
- Published online by Cambridge University Press:
- 19 July 2023, p. S422
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Introduction
Mirror exposure therapies (MET) have been proposed to reduce symptomatology in patients with Anorexia Nervosa. However, most MET protocols or related studies do not specify the patients’ distance to the mirror, or when they do so, such a distance may differ significantly (from 0,5 to 3 meters). Such modifications of mirror positioning could imply variations in patients’ fixation patterns on different body parts (i.e., attentional bias between weight-related and non-weight related body parts), since previous studies shown that dissociated neural systems (either in left or right cerebral hemispheres) are involved in the attentional patterns and scanning strategies depending on the distance (i.e., in near and far space). Furthermore, as the body-related attentional bias (AB) has been shown to be a part of the maintenance mechanism of AN symptomatology, any modification of attentional patterns due to mirror’s distance variations may influence the efficacy of MET.
ObjectivesThis study aims to use Virtual Reality (VR) and Eye-Tracking (ET) technologies to precisely analyse the effect of the distance to the mirror on the attentional patterns.
Methods137 female college students were immersed in a VR environment in which they could look in the mirror at their respective avatars created from the measurements and photos of their real bodies. The mirror was positioned at 3.30m in front of the participants in “group 1” (n1 = 54), and at 1.54m in front of the participants in “group 2” (n2 = 83). Eye-Tracking feature and OGAMA software (Freie Universität, Berlin, Germany) were used to record and process the visual attentional pattern of each participant, during a 30-second free viewing task at her avatar. Complete Fixation Time (CFT) was assessed as the fixation time difference between weight- and non-weight- related body parts, defined from the weight scale of the PASTAS questionnaire. Independent Sample t-Test was conducted to analyse CFT mean difference between both groups.
ResultsIndependent Samples t-Test shows statistically significant CFT mean difference (F (1, 135) = 1.571, p < 0.001, 95% IC [1717; 5581]) between both groups. While fixation pattern of the group positioned further to the mirror (group 1) was more focused on weight-related body parts (CFT mean = 2282ms, SD = 809), the fixation pattern of the group positioned closer to the mirror (group 2) was more focused on non-weight-related body parts (CFT mean = -1367ms, SD = 587).
ConclusionsThis study shows new opportunities to use VR and ET technologies to precisely analyse the variations of fixation patterns as a function of mirror position in MET. Such information may contribute to adapt and develop new MET’s protocols for AN patients, optimizing the distance to the mirror. It also underscores the importance of specifying the distance to the mirror in MET-related studies to improve replicability.
Disclosure of InterestNone Declared