Perception of facial expressions involves emotion specific somatosensory cortex activations which are shaped by alexithymia.
Alexithymia
ERPs
Emotion perception
Somatosensory
Journal
Cortex; a journal devoted to the study of the nervous system and behavior
ISSN: 1973-8102
Titre abrégé: Cortex
Pays: Italy
ID NLM: 0100725
Informations de publication
Date de publication:
10 2023
10 2023
Historique:
received:
21
03
2023
revised:
25
05
2023
accepted:
23
06
2023
medline:
23
10
2023
pubmed:
14
8
2023
entrez:
13
8
2023
Statut:
ppublish
Résumé
Somatosensory cortex (SCx) has been shown to crucially contribute to early perceptual processes when judging other's emotional facial expressions. Here, we investigated the specificity of SCx activity to angry, happy, sad and neutral emotions and the role of personality factors. We assessed participants' alexithymia (TAS-20) and depression (BDI) levels, their cardioceptive abilities and recorded changes in neural activity in a facial emotion judgment task. During the task, we presented tactile probes to reveal neural activity in SCx which was then isolated from visual carry-over responses. We further obtain SCx emotion effects by subtracting SCx activity elicited by neutral emotion expressions from angry, happy, and sad expressions. We find preliminary evidence for distinct modulations of SCx activity to angry and happy expressions. Moreover, the SCx anger response was predicted by individual differences in trait alexithymia. Thus, emotion expressions of others may be distinctly presented in the observer's neural body representation and may be shaped by their personality trait.
Identifiants
pubmed: 37573853
pii: S0010-9452(23)00170-3
doi: 10.1016/j.cortex.2023.06.010
pii:
doi:
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
223-234Informations de copyright
Copyright © 2023 The Authors. Published by Elsevier Ltd.. All rights reserved.