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Salivary secretion and disgust: A pilot study
journal contribution
posted on 2023-05-19, 05:54 authored by Vicario, CM, Sommer, W, Kuran, KA, Rafal, RDAlthough a direct link has been established between self-experienced disgust and salivary secretion, it is unclear whether this physiological index is modulated by the social experience of disgust (i.e., exposure to the facial expression of disgust). We tested this issue in a pilot study by collecting salivary samples in a group of 20 healthy humans watching pictures of faces expressing disgust. Moreover, we tried to replicate previous evidence by testing saliva secretion in response to pictures of unpalatable (i.e., rotten) food and non-gustatory disgusting stimuli (i.e., disgusting insects). Overall, our analysis shows a general reduction of saliva secretion in response to disgust stimuli, compared to their positive counterparts, although further analyses for specific stimulus categories indicated that this difference was statistically significant only for food pictures. The non-significance of the face and insect categories might be due to insufficient power of our small sample. Overall, a general reduction of saliva secretion for different disgust-related stimuli suggests a shared mechanism of encoding, in line with theories of neural reuse.
History
Publication title
Acta psychologicaVolume
178Pagination
18-24ISSN
0001-6918Department/School
School of Psychological SciencesPublisher
Elsevier Science BvPlace of publication
NetherlandsRights statement
© 2017 ElsevierRepository Status
- Restricted