Emotional sounds in space: asymmetrical representation within early-stage auditory areas

Frontiers in Neuroscience

Neuroscience

Sandra Da Costa¹  Stephanie Clarke²  Tiffany Grisendi² 

[1] Centre d’Imagerie Biomédicale, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland;Service de Neuropsychologie et de Neuroréhabilitation, Centre Hospitalier Universitaire Vaudois (CHUV) and University of Lausanne, Lausanne, Switzerland;

关键词: human vocalizations;    emotions;    auditory belt areas;    voice area;    lateralization;    7T fMRI;   

DOI  :  10.3389/fnins.2023.1164334

 received in 2023-02-12, accepted in 2023-04-07,  发布年份 2023

来源: Frontiers

【 摘 要 】

Evidence from behavioral studies suggests that the spatial origin of sounds may influence the perception of emotional valence. Using 7T fMRI we have investigated the impact of the categories of sound (vocalizations; non-vocalizations), emotional valence (positive, neutral, negative) and spatial origin (left, center, right) on the encoding in early-stage auditory areas and in the voice area. The combination of these different characteristics resulted in a total of 18 conditions (2 categories x 3 valences x 3 lateralizations), which were presented in a pseudo-randomized order in blocks of 11 different sounds (of the same condition) in 12 distinct runs of 6 min. In addition, two localizers, i.e., tonotopy mapping; human vocalizations, were used to define regions of interest. A three-way repeated measure ANOVA on the BOLD responses revealed bilateral significant effects and interactions in the primary auditory cortex, the lateral early-stage auditory areas, and the voice area. Positive vocalizations presented on the left side yielded greater activity in the ipsilateral and contralateral primary auditory cortex than did neutral or negative vocalizations or any other stimuli at any of the three positions. Right, but not left area L3 responded more strongly to (i) positive vocalizations presented ipsi- or contralaterally than to neutral or negative vocalizations presented at the same positions; and (ii) to neutral than positive or negative non-vocalizations presented contralaterally. Furthermore, comparison with a previous study indicates that spatial cues may render emotional valence more salient within the early-stage auditory areas.

【 授权许可】

Unknown   
Copyright © 2023 Grisendi, Clarke and Da Costa.