Personal space regulation is affected by unilateral temporal lesions beyond the amygdala.
amygdala
facial emotional expressions
interpersonal distance
stop distance
virtual reality
Journal
Cerebral cortex communications
ISSN: 2632-7376
Titre abrégé: Cereb Cortex Commun
Pays: United States
ID NLM: 101767128
Informations de publication
Date de publication:
2022
2022
Historique:
received:
14
04
2022
revised:
13
07
2022
accepted:
15
07
2022
entrez:
8
9
2022
pubmed:
9
9
2022
medline:
9
9
2022
Statut:
epublish
Résumé
We constantly face situations involving interactions with others that require us to automatically adjust our physical distances to avoid discomfort or anxiety. A previous case study has demonstrated that the integrity of both amygdalae is essential to regulate interpersonal distances. Despite unilateral lesion to the amygdala, as to other sectors of the medial temporal cortex, are known to also affect social behavior, their role in the regulation of interpersonal distances has never been investigated. Here, we sought to fill this gap by testing three patients with unilateral temporal lesions following surgical resections, including one patient with a lesion mainly centered on the amygdala and two with lesions to adjacent medial temporal cortex, on two versions of the stop distance paradigm (i.e. in a virtual reality environment and in a real setting). Our results showed that all three patients set shorter interpersonal distances compared to neurotypical controls. In addition, compared to controls, none of the patients adjusted such physical distances depending on facial emotional expressions, despite they preserved ability to categorize them. Finally, patients' heart rate responses differed from controls when viewing approaching faces. Our findings bring compelling evidence that unilateral lesions within the medial temporal cortex, not necessarily restricted to the amygdala, are sufficient to alter interpersonal distance, thus shedding new light on the neural circuitry regulating distance in social interactions.
Identifiants
pubmed: 36072709
doi: 10.1093/texcom/tgac031
pii: tgac031
pmc: PMC9441012
doi:
Types de publication
Journal Article
Langues
eng
Pagination
tgac031Informations de copyright
© The Author(s) 2022. Published by Oxford University Press.
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