Stimulus arousal drives amygdalar responses to emotional expressions across sensory modalities.
Adult
Amygdala
/ diagnostic imaging
Arousal
/ physiology
Auditory Cortex
/ diagnostic imaging
Auditory Perception
/ physiology
Emotions
/ physiology
Facial Expression
Facial Recognition
/ physiology
Female
Humans
Judgment
/ physiology
Magnetic Resonance Imaging
Male
Neural Pathways
/ diagnostic imaging
Photic Stimulation
Visual Cortex
/ diagnostic imaging
Young Adult
Journal
Scientific reports
ISSN: 2045-2322
Titre abrégé: Sci Rep
Pays: England
ID NLM: 101563288
Informations de publication
Date de publication:
05 02 2020
05 02 2020
Historique:
received:
23
09
2019
accepted:
23
12
2019
entrez:
7
2
2020
pubmed:
7
2
2020
medline:
21
11
2020
Statut:
epublish
Résumé
The factors that drive amygdalar responses to emotionally significant stimuli are still a matter of debate - particularly the proneness of the amygdala to respond to negatively-valenced stimuli has been discussed controversially. Furthermore, it is uncertain whether the amygdala responds in a modality-general fashion or whether modality-specific idiosyncrasies exist. Therefore, the present functional magnetic resonance imaging (fMRI) study systematically investigated amygdalar responding to stimulus valence and arousal of emotional expressions across visual and auditory modalities. During scanning, participants performed a gender judgment task while prosodic and facial emotional expressions were presented. The stimuli varied in stimulus valence and arousal by including neutral, happy and angry expressions of high and low emotional intensity. Results demonstrate amygdalar activation as a function of stimulus arousal and accordingly associated emotional intensity regardless of stimulus valence. Furthermore, arousal-driven amygdalar responding did not depend on the visual and auditory modalities of emotional expressions. Thus, the current results are consistent with the notion that the amygdala codes general stimulus relevance across visual and auditory modalities irrespective of valence. In addition, whole brain analyses revealed that effects in visual and auditory areas were driven mainly by high intense emotional facial and vocal stimuli, respectively, suggesting modality-specific representations of emotional expressions in auditory and visual cortices.
Identifiants
pubmed: 32024891
doi: 10.1038/s41598-020-58839-1
pii: 10.1038/s41598-020-58839-1
pmc: PMC7002496
doi:
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
1898Références
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