title: Frames of reference and their neural correlates within navigation in a 3D environment.
abstract: 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.
authors.affiliation: Department of Cybernetics, Faculty of Electrical Engineering, Czech Technical University in Prague, Prague, Czech Republic. vavrecka@fel.cvut.cz
authors.forename: Michal
authors.initials: M
authors.lastname: Vavrečka
authors.forename: Václav
authors.initials: V
authors.lastname: Gerla
authors.forename: Lenka
authors.initials: L
authors.lastname: Lhotská
authors.forename: Martin
authors.initials: M
authors.lastname: Brunovský
mesh_terms: D000328:Adult; D001499:Bayes Theorem; D001611:Beta Rhythm; D003196:Computer Graphics; D004566:Electrodes; D004569:Electroencephalography; D005260:Female; D007839:Functional Laterality / Q000502:physiology; D006801:Humans; D008297:Male; D009778:Occipital Lobe / Q000502:physiology; D010296:Parietal Lobe / Q000502:physiology; D011597:Psychomotor Performance / Q000502:physiology; D015203:Reproducibility of Results; D012727:Sex Characteristics; D012815:Signal Processing, Computer-Assisted; D013028:Space Perception / Q000502:physiology*; D013702:Temporal Lobe / Q000502:physiology; D013826:Theta Rhythm; D014584:User-Computer Interface; D058067:Wavelet Analysis; D055815:Young Adult