Audio-Tactile and Peripersonal Space Processing Around the Trunk in Human Parietal and Temporal Cortex: An Intracranial EEG Study.

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Version: Final published version
License: CC BY-NC 4.0
Serval ID
serval:BIB_18E506FC5961
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Audio-Tactile and Peripersonal Space Processing Around the Trunk in Human Parietal and Temporal Cortex: An Intracranial EEG Study.
Journal
Cerebral cortex
Author(s)
Bernasconi F., Noel J.P., Park H.D., Faivre N., Seeck M., Spinelli L., Schaller K., Blanke O., Serino A.
ISSN
1460-2199 (Electronic)
ISSN-L
1047-3211
Publication state
Published
Issued date
01/09/2018
Peer-reviewed
Oui
Volume
28
Number
9
Pages
3385-3397
Language
english
Notes
Publication types: Journal Article ; Research Support, Non-U.S. Gov't
Publication Status: ppublish
Abstract
Interactions with the environment happen within one's peripersonal space (PPS)-the space surrounding the body. Studies in monkeys and humans have highlighted a multisensory distributed cortical network representing the PPS. However, knowledge about the temporal dynamics of PPS processing around the trunk is lacking. Here, we recorded intracranial electroencephalography (iEEG) in humans while administering tactile stimulation (T), approaching auditory stimuli (A), and the 2 combined (AT). To map PPS, tactile stimulation was delivered when the sound was far, intermediate, or close to the body. The 19% of the electrodes showed AT multisensory integration. Among those, 30% showed a PPS effect, a modulation of the response as a function of the distance between the sound and body. AT multisensory integration and PPS effects had similar spatiotemporal characteristics, with an early response (~50 ms) in the insular cortex, and later responses (~200 ms) in precentral and postcentral gyri. Superior temporal cortex showed a different response pattern with AT multisensory integration at ~100 ms without a PPS effect. These results, represent the first iEEG delineation of PPS processing in humans and show that PPS and multisensory integration happen at similar neural sites and time periods, suggesting that PPS representation is based on a spatial modulation of multisensory integration.
Keywords
Acoustic Stimulation, Adult, Electrocorticography, Female, Humans, Male, Parietal Lobe/physiology, Personal Space, Physical Stimulation, Sound Localization/physiology, Space Perception/physiology, Temporal Lobe/physiology, Torso, Touch Perception/physiology
Pubmed
Web of science
Open Access
Yes
Create date
31/07/2018 16:10
Last modification date
16/11/2019 7:16
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