Počet záznamů: 1
Timing of Allocentric and Egocentric Spatial Processing in Human Intracranial EEG
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SYSNO ASEP 0576097 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Timing of Allocentric and Egocentric Spatial Processing in Human Intracranial EEG Tvůrce(i) Moraresku, Sofiia (FGU-C) ORCID, SAI
Hammer, J. (CZ)
Janča, R. (CZ)
Ježdík, P. (CZ)
Kalina, A. (CZ)
Marusič, P. (CZ)
Vlček, Kamil (FGU-C) RID, ORCIDZdroj.dok. Brain Topography. - : Springer - ISSN 0896-0267
Roč. 36, č. 6 (2023), s. 870-889Poč.str. 20 s. Jazyk dok. eng - angličtina Země vyd. DE - Německo Klíč. slova intracranial EEG ; high-frequency gamma activity ; reference frames ; allocentric ; egocentric ; spatial judgment Obor OECD Neurosciences (including psychophysiology CEP GA19-11753S GA ČR - Grantová agentura ČR Způsob publikování Open access Institucionální podpora FGU-C - RVO:67985823 UT WOS 001029943500001 EID SCOPUS 85165293594 DOI https://doi.org/10.1007/s10548-023-00989-2 Anotace Spatial reference frames (RFs) play a key role in spatial cognition, especially in perception, spatial memory, and navigation. There are two main types of RFs: egocentric (self-centered) and allocentric (object-centered). Although many fMRI studies examined the neural correlates of egocentric and allocentric RFs, they could not sample the fast temporal dynamics of the underlying cognitive processes. Therefore, the interaction and timing between these two RFs remain unclear. Taking advantage of the high temporal resolution of intracranial EEG (iEEG), we aimed to determine the timing of egocentric and allocentric information processing and describe the brain areas involved. We recorded iEEG and analyzed broad gamma activity (50-150 Hz) in 37 epilepsy patients performing a spatial judgment task in a three-dimensional circular virtual arena. We found overlapping activation for egocentric and allocentric RFs in many brain regions, with several additional egocentric- and allocentric-selective areas. In contrast to the egocentric responses, the allocentric responses peaked later than the control ones in frontal regions with overlapping selectivity. Also, across several egocentric or allocentric selective areas, the egocentric selectivity appeared earlier than the allocentric one. We identified the maximum number of egocentric-selective channels in the medial occipito-temporal region and allocentric-selective channels around the intraparietal sulcus in the parietal cortex. Our findings favor the hypothesis that egocentric spatial coding is a more primary process, and allocentric representations may be derived from egocentric ones. They also broaden the dominant view of the dorsal and ventral streams supporting egocentric and allocentric space coding, respectively. Pracoviště Fyziologický ústav Kontakt Lucie Trajhanová, lucie.trajhanova@fgu.cas.cz, Tel.: 241 062 400 Rok sběru 2024 Elektronická adresa https://doi.org/10.1007/s10548-023-00989-2
Počet záznamů: 1