Enhanced audio-tactile multisensory interaction in a peripersonal task after echolocation.

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Version: Final published version
License: CC BY 4.0
Serval ID
serval:BIB_AAB57BB39C1C
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Enhanced audio-tactile multisensory interaction in a peripersonal task after echolocation.
Journal
Experimental brain research
Author(s)
Tonelli A., Campus C., Serino A., Gori M.
ISSN
1432-1106 (Electronic)
ISSN-L
0014-4819
Publication state
Published
Issued date
03/2019
Peer-reviewed
Oui
Volume
237
Number
3
Pages
855-864
Language
english
Notes
Publication types: Journal Article
Publication Status: ppublish
Abstract
Peripersonal space (PPS) is created by a multisensory interaction between different sensory modalities and can be modified by experience. In this article, we investigated whether an auditory training, inside the peripersonal space area, can modify the PPS around the head in sighted participants. The auditory training was based on echolocation. We measured the participant's reaction times to a tactile stimulation on the neck, while task-irrelevant looming auditory stimuli were presented. Sounds more strongly affect tactile processing when located within a limited distance from the body. We measured spatially dependent audio-tactile interaction as a proxy of PPS representation before and after an echolocation training. We found a significant speeding effect on tactile RTs after echolocation, specifically when sounds where around the location where the echolocation task was performed. This effect could not be attributed to a task repetition effect nor to a shift of spatial attention, as no changes of PPS were found in two control groups of participants, who performed the PPS task after either a break or a temporal auditory task (with stimuli located at the same position of echolocation task). These findings show that echolocation affects multisensory processing inside PPS representation, likely to better represent the space where external stimuli, have to be localized.
Keywords
Adult, Animals, Female, Humans, Male, Personal Space, Sound Localization/physiology, Space Perception/physiology, Touch Perception/physiology, Young Adult, Audio-tactile, Echolocation, Multisensory, Peripersonal space
Pubmed
Web of science
Open Access
Yes
Create date
03/02/2019 15:21
Last modification date
20/08/2019 15:14
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