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Frames of reference and their neural correlates within navigation in a 3D environment

Published online by Cambridge University Press:  08 May 2012

Department of Cybernetics, Faculty of Electrical Engineering, Czech Technical University in Prague, Prague, Czech Republic
Department of Cybernetics, Faculty of Electrical Engineering, Czech Technical University in Prague, Prague, Czech Republic
Department of Cybernetics, Faculty of Electrical Engineering, Czech Technical University in Prague, Prague, Czech Republic
EEG and Sleep Laboratory, Prague Psychiatric Center, Prague, Czech Republic
*Address correspondence and reprint requests to: Michal Vavrečka, BioDat Research Group, Gerstner Laboratory, FEE CTU Prague, Karlovo nam. 13, 121 35 Prague, Czech Republic. E-mail:


The goal of this study was an administration of the navigation task in a three-dimensional virtual environment to localize the electroencephalogram (EEG) features responsible for egocentric and allocentric reference frame processing in a horizontal and also in a vertical plane. We recorded the EEG signal of a traverse through a virtual tunnel to search for the best signal features that discriminate between specific strategies in particular plane. We identified intrahemispheric coherences in occipital–parietal and temporal–parietal areas as the most discriminative features. They have 10% lower error rate compared to single electrode features adopted in previous studies. The behavioral analysis revealed that 11% of participants switched from egocentric to allocentric strategy in a vertical plane, while 24% of participants consistently adopted egocentric strategy in both planes.

Research Articles
Copyright © Cambridge University Press 2012

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