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Accounting for Delusional Misidentifications

  • Hadyn D. Ellis (a1) and Andrew W. Young (a2)


Accounts of the major DMSs are given using theoretical models of the functional components underlying recognition of familiar people. Thus, Capgras' syndrome is suggested to involve impairment of processes that can support ‘covert’ recognition of familiar faces in prosopagnosia. It therefore forms a potential ‘mirror image’ of the impairments underlying prosopagnosia, and earlier attempts to link the two conditions directly are questioned. Frégoli syndrome and intermetamorphosis are explained as defects at different stages of an information-processing chain. Not only are these accounts consistent with the association of different DMSs with different brain injuries, but they also offer both suggestions for new inquiries and predictions about possible preserved and impaired abilities.


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Alexander, M. P., Stuss, D. T. & Benson, D. F. (1979) Capgras syndrome: a reduplicative phenomenon. Neurology, 29, 334339.
Anderson, D. N. (1988) The delusion of inanimate doubles: implications for understanding the Capgras phenomenon. British Journal of Psychiatry, 153, 694699.
Bauer, R. M. (1984) Autonomic recognition of names and faces: a neuropsychological application of the Guilty Knowledge Test. Neuropsychologia, 22, 457469.
Bauer, R. M. (1986) The cognitive psychophysiology of prosopagnosia. In Aspects of Face Processing (eds H. Ellis, M. Jeeves, F. Newcombe, et al). Dordrecht: Martinus Nijhoff.
Bear, D. M. (1983) Hemispheric specialization and the neurology of emotion. Archives of Neurology, 40, 195202.
Benton, A. L. (1980) The neuropsychology of facial recognition. American Psychologist, 35, 176186.
Benton, A. L., Hamsher, K., Varney, N. R., et al (1983) Contributions to Neurological Assessment. New York: Oxford University Press.
Berson, R. J. (1983) Capgras' syndrome. American Journal of Psychiatry, 140, 8.
Bick, P. A. (1986) The syndrome of intermetamorphosis. Bibliotheca Psychiatrica, 164, 131135.
Bodamer, J. (1947) Die Prosop-Agnosic. Archiv für Psychiatric und Nervenkrankheiten, 179, 654.
Bruce, V. (1986) Recognising familiar faces. In Aspects of Face Processing (eds H. Ellis, M. Jeeves, F. Newcombe, et al). Dordrecht: Martinus Nijhoff.
Bruce, V. (1988) Recognising Faces. Hillsdale, NJ: Lawrence Erlbaum.
Bruce, V. & Young, A. (1986) Understanding face recognition. British Journal of Psychology, 77, 305327.
Bruce, V., Ellis, H., Gibling, F., et al (1988) Parallel processing of the sex and familiarity of faces. Canadian Journal of Psychology, 41, 510520.
Bruyer, R., Laterre, C., Seron, X., et al (1983) A case of prosopagnosia with some preserved covert remembrance of familiar faces. Brain and Cognition, 2, 257284.
Campbell, R., Landis, T. & Regard, M. (1986) Face recognition and lip reading: a neurological dissociation. Brain, 109, 509521.
Capgras, J. & Reboul-Lachaux, J. (1923) L'illusion des ‘sosies’ dans un délire systématise chronique. Bulletin de la Société Clinique de Médecine Mentale, 2, 616.
Christodoulou, G. W. (1978) Syndrome of subjective doubles. American Journal of Psychiatry, 135, 249251.
Christodoulou, G. N. (1975) Reported in Bick (1986).
Christodoulou, G. N. (1986) The delusional misidentification syndrome. Bibliotheca Psychiatrica, 164.
Courbon, P. & Fail, G. (1927) Illusion of Frégoli syndrome and schizophrenia. Societe Clinique de Médecine Mentale.
Courbon, P. & Tusques, J. (1932) Illusions d'intermetamorphose et de charme. Annales Medico-Psychologiques, 14, 401406.
Cowey, A. (1985) Aspects of cortical organization related to selective attention and selective impairments of visual perception: A tutorial review. In Attention and Performance, XI (eds M. Posner & O. Marin). New Jersey: Erlbaum.
Damasio, A. R., Damasio, H. & Van Hoesen, G. W. (1982) Prosopagnosia: anatomical basis and behavioral mechanisms. Neurology, 32, 331341.
De Haan, E., Young, A. & Newcombe, F. (1987) Face recognition without awareness. Cognitive Neuropsychology, 4, 385415.
De Pauw, K. W., Szulecka, T. K. & Poltock, T. L. (1987) Single case study. Frégoli syndrome after cerebral infarction. Journal of Nervous and Mental Disease, 175, 16.
De Renzi, E. (1986) Current issues in prosopagnosia. In Aspects of Face Processing (eds H. Ellis, M. Jeeves, F. Newcombe, et al). Dordrecht: Martinus Nijhoff.
Derombies, M. (1935) L'illusion de sosie, forme particuliers de la reconnaissance systematique (these de Paris quoted by A. Brochado). Annales Medico-Psychologiques, 94, 706717).
Ellis, A. W. & Young, A. G. (1988) Human Cognitive Neuropsychology. London: Erlbaum.
Ellis, H. D. (1986a) Processes underlying face recognition. In The Neuropsychology of Face Perception and Facial Expression (ed. R. Bruyer). Hillsdale, NJ: Lawrence Erlbaum.
Ellis, H. D. (1986b) Disorders of face recognition. In Neurology (eds K. Pock, H. J. Freund & H. Ganshirt). Heidelberg: Springer-Verlag.
Ellis, H. D. (1989) Past and recent studies of prosopagnosia. In Developments in Clinical and Experimental Neuropsychology (eds J. R. Crawford & D. M. Parker). New York: Plenum.
Enoch, M. (1963) The Capgras syndrome. Acta Psychiatrica Scandinavica, 39, 437462.
Fishbain, D. A. & Rosomoff, H. (1986) Capgras syndrome associated with metrizamide myelography. International Journal of Psychiatry in Medicine, 16, 131136.
Fodor, J. (1983) The Modularity of Mind. Cambridge, Mass: MIT Press.
Hay, D. C. & Young, A. W. (1982) The human face. In Normality and Pathology in Cognitive Functions (ed. A. Ellis). New York: Academic Press.
Hay, G. G., Jolley, D. J. & Jones, R. G. (1974) A case of Capgras' syndrome in association with pseudo-hypoparathyroidism. Acta Psychiatrica Scandinavica, 50, 7377.
Hecaen, H. (1981) The neuropsychology of face recognition. In Perceiving and Remembering Faces (eds G. Davies, H. Ellis & J. Shepherd). London: Academic Press.
Joseph, A. B. (1986) Focal central nervous system abnormalities in patients with misidentification syndromes. Bibliotheca Psychiatrica, 164, 6879.
Joseph, A. B. (1987) Delusional misidentification of the Capgras and intermetamorphosis types responding to clorazepate. Acta Psychiatrica Scandinavica, 75, 330332.
Joseph, A. B. & O'Leary, D. H. (1987) Anterior cortical atrophy in Frégoli syndrome. Journal of Clinical Psychiatry, 48, 409411.
Kapur, N., Turner, A. & King, C. (1988) Reduplicative paramnesia: possible anatomical and neuropsychological mechanisms. Journal of Neurology, Neurosurgery and Psychiatry, 51, 579581.
Kiriakos, R. & Ananth, J. (1980) Review of 13 cases of Capgras syndrome. American Journal of Psychiatry, 137, 16051607.
Kurucz, J. & Feldmar, G. (1979) Proso-affective agnosia as a symptom of cerebral organic disease. Journal of the American Geriatrics Society, 27, 225230.
Landis, T., Cummings, J. G., Christen, L., et al (1986) Are unilateral right posterior cerebral lesions sufficient to cause prosopagnosia? Clinical and radiological findings in six additional patients. Cortex, 22, 243252.
Lewis, S. W. (1987) Brain imaging in a case of Capgras' syndrome. British Journal of Psychiatry, 150, 117121.
MacCallum, W. A. G. (1973) Capgras symptoms with an organic basis. British Journal of Psychiatry, 123, 639642.
Malliaras, D. E., Kossovitsa, Y. T. & Christodoulou, G. N. (1978) Organic contributors to the intermetamorphosis syndrome. American Journal of Psychiatry, 135, 8.
Marr, D. (1982) Vision. San Francisco: Freeman.
Mazzuchi, A. & Biber, C. (1983) Is prosopagnosia more frequent in males than females? Cortex, 19, 509516.
Meadows, J. C. (1974) The anatomical basis of prosopagnosia. Journal of Neurology, Neurosurgery and Psychiatry, 37, 489501.
Merrin, E. L. & Silberfarb, P. M. (1976) The Capgras phenomenon. Archives of General Psychiatry, 33, 965968.
Newcombe, F. (1979) The processing of visual information in prosopagnosia and acquired dyslexia: Functional versus physiological interpretation. In Research in Psychology and Medicine I (eds D. Osborne, M. Gruneberg & J. Eiser). London: Academic Press.
Sergent, J. (1986) Methodological constraints on neuropsychological studies of face perception in normals. In The Neuropsychology of Face Perception and Facial Expression (ed. R. Bruyer). Hillsdale, NJ: Erlbaum.
Shallice, T. (1988) From Neuropsychology to Mental Structure. Cambridge: Cambridge University Press.
Shraberg, D. & Weitzel, W. D. (1979) Prosopagnosia and the Capgras syndrome. Journal of Clinical Psychiatry, 40, 313316.
Shuttleworth, E. C., Syring, V. & Allen, N. (1982) Further observations on the nature of prosopagnosia. Brain and Cognition, 1, 307322.
Signer, S. F. (1987) Capgras syndrome: the delusion of substitution. Journal of Clinical Psychiatry, 48, 4.
Sims, A. & White, . (1973) Coexistence of the Capgras and de Clerambault syndromes. A case history. British Journal of Psychiatry, 123, 635637.
Todd, J., Dewhurst, K. & Wallis, D. (1981) The syndrome of Capgras. British Journal of Psychiatry, 139, 319327.
Tranel, D. & Damasio, A. R. (1985) Knowledge without awareness: an autonomic index of facial recognition by prosopagnosics. Science, 228, 14531454.
Tzavaras, A., Hécaen, H. & LeBras, H. (1970) Le problème de la specificité du déficit de la reconnaissance du visage humain lors des lésions hemisphériques unilatérales. Neuropsychologic, 8, 403418.
Tzavaras, A., Luate, J. & Bidault, E. (1986) Face recognition dysfunction and delusional misidentification syndromes. In Aspects of Face Processing (eds H. Ellis, M. Jeeves, F. Newcombe, et al). Dordrecht: Martinus Nijhoff.
Young, A. W. & Ellis, H. D. (1989a) Handbook of Research on Face Processing. Amsterdam: North Holland.
Young, A. W. & Ellis, H. D. (1989b) Childhood prosopagnosia. Brain and Cognition, 9, 1647.
Young, A. W., Hay, D. C. & Ellis, A. W. (1985) The faces that launched a thousand slips: everyday difficulties and errors in recognizing people. British Journal of Psychology, 76, 495523.
Young, A. W., McWeeny, , Hay, D. C., et al (1986) Matching familiar and unfamiliar faces on identity and expression. Psychological Research, 48, 6368.


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Accounting for Delusional Misidentifications

  • Hadyn D. Ellis (a1) and Andrew W. Young (a2)
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