Task-dependent spatial processing in the visual cortex.
EEG
space perception
visual brain
Journal
Human brain mapping
ISSN: 1097-0193
Titre abrégé: Hum Brain Mapp
Pays: United States
ID NLM: 9419065
Informations de publication
Date de publication:
01 12 2023
01 12 2023
Historique:
revised:
31
07
2023
received:
29
12
2022
accepted:
30
08
2023
medline:
2
11
2023
pubmed:
9
10
2023
entrez:
9
10
2023
Statut:
ppublish
Résumé
To solve spatial tasks, the human brain asks for support from the visual cortices. Nonetheless, representing spatial information is not fixed but depends on the reference frames in which the spatial inputs are involved. The present study investigates how the kind of spatial representations influences the recruitment of visual areas during multisensory spatial tasks. Our study tested participants in an electroencephalography experiment involving two audio-visual (AV) spatial tasks: a spatial bisection, in which participants estimated the relative position in space of an AV stimulus in relation to the position of two other stimuli, and a spatial localization, in which participants localized one AV stimulus in relation to themselves. Results revealed that spatial tasks specifically modulated the occipital event-related potentials (ERPs) after the onset of the stimuli. We observed a greater contralateral early occipital component (50-90 ms) when participants solved the spatial bisection, and a more robust later occipital response (110-160 ms) when they processed the spatial localization. This observation suggests that different spatial representations elicited by multisensory stimuli are sustained by separate neurophysiological mechanisms.
Identifiants
pubmed: 37811869
doi: 10.1002/hbm.26489
pmc: PMC10619374
doi:
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
5972-5981Informations de copyright
© 2023 The Authors. Human Brain Mapping published by Wiley Periodicals LLC.
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