Timing of Allocentric and Egocentric Spatial Processing in Human Intracranial EEG

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985823%3A_____%2F23%3A00576097" target="_blank" >RIV/67985823:_____/23:00576097 - isvavai.cz</a>

Alternative codes found

RIV/00216208:11130/23:10465944 RIV/68407700:21230/23:00367071 RIV/00216208:11120/23:43925902 RIV/00064203:_____/23:10465944

Result on the web

<a href="https://doi.org/10.1007/s10548-023-00989-2" target="_blank" >https://doi.org/10.1007/s10548-023-00989-2</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s10548-023-00989-2" target="_blank" >10.1007/s10548-023-00989-2</a>

Result language

angličtina

Original language name

Timing of Allocentric and Egocentric Spatial Processing in Human Intracranial EEG

Original language description

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.

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

30103 - Neurosciences (including psychophysiology)

Project

<a href="/en/project/GA19-11753S" target="_blank" >GA19-11753S: Timing of the spatial scene processing in the dorsal and ventral visual stream of the human brain</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2023

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Brain Topography

ISSN

0896-0267

e-ISSN

1573-6792

Volume of the periodical

36

Issue of the periodical within the volume

6

Country of publishing house

DE - GERMANY

Number of pages

20

Pages from-to

870-889

UT code for WoS article

001029943500001

EID of the result in the Scopus database

2-s2.0-85165293594