Treffer: Functional organization of distance-dependent audio-tactile integration is different in rear and front spaces.

Title:
Functional organization of distance-dependent audio-tactile integration is different in rear and front spaces.
Authors:
Amiel A; Institut de Recherche Biomédicale des Armées, Brétigny-sur-Orge, France., Hobeika L; PSITEC - Psychologie: Interactions, Temps, Emotions, Cognition, Université de Lille, ULR 4072, Lille, France., Viaud-Delmon I; CNRS, Ircam, Sorbonne Université, Ministère de la Culture, Sciences et Technologies de la Musique et du Son, STMS, Paris, France., Taffou M; Institut de Recherche Biomédicale des Armées, Brétigny-sur-Orge, France. Electronic address: marine.taffou@def.gouv.fr.
Source:
Cortex; a journal devoted to the study of the nervous system and behavior [Cortex] 2026 Jan; Vol. 194, pp. 220-238. Date of Electronic Publication: 2025 Dec 08.
Publication Type:
Journal Article
Language:
English
Journal Info:
Publisher: Masson Country of Publication: Italy NLM ID: 0100725 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1973-8102 (Electronic) Linking ISSN: 00109452 NLM ISO Abbreviation: Cortex Subsets: MEDLINE
Imprint Name(s):
Publication: Milan : Masson
Original Publication: Varese.
MeSH Terms:
Touch Perception*/physiology , Personal Space* , Auditory Perception*/physiology , Space Perception*/physiology , Touch*/physiology , Sound Localization*/physiology , Distance Perception*/physiology, Humans ; Male ; Female ; Adult ; Young Adult ; Acoustic Stimulation ; Reaction Time/physiology ; Physical Stimulation
Contributed Indexing:
Keywords: Auditory spatial perception; Depth; Looming sound; Multisensory integration; Peripersonal space
Entry Date(s):
Date Created: 20251219 Date Completed: 20260111 Latest Revision: 20260111
Update Code:
20260112
DOI:
10.1016/j.cortex.2025.11.015
PMID:
41418395
Database:
MEDLINE

Weitere Informationen

Peripersonal space mediates animals' interactions with the environment and is thus critical for the implementation of appropriate behaviors. Integrating multisensory information located in peripersonal space induces enhanced behavioral responses and reflects the relevance of external stimuli for the organism's survival. To date, modifications of reaction time related to peripersonal space have mostly been studied using stimuli presented in the frontal space, and limited data are available on other dimensions of peripersonal space. Here, we investigated rear and front defensive peripersonal space by testing whether the distance-dependent behavioral effect of audio-tactile integration varies around the body. Healthy human participants had to detect a tactile stimulation on their hand while an irrelevant sound was approaching them from different parts of space. We used sound spatialization techniques (3D sound) to create sound stimuli looming towards participants' bodies from the front-right, front-left, rear-right, and rear-left quadrants. In the front hemifield, sounds approaching from the left had to be closer to facilitate tactile detection compared to those from the right. In contrast, in the rear hemifield, tactile detection was enhanced at similar distances regardless of whether the sound approached from the left or right. This indicates that human auditory defensive peripersonal space is not homogeneous around the body, showing a lateral asymmetry in the front but not in the rear space. This suggests that perceptual coding of space takes into account action abilities which, in humans, are driven by a front/back organization of the biomechanic skeletal system and of the sensory organs.
(Copyright © 2025 The Author(s). Published by Elsevier Ltd.. All rights reserved.)

Declaration of competing interest and ethics We have no conflicts of interest to disclose. The study was conducted in accordance with the Declaration of Helsinki, and approved by the French Ethic Committee (CPP Nord-Ouest I - CPP n°2019-A01131-56).