Tickle contagion in the rat somatosensory cortex.
Sensory neuroscience
Journal
iScience
ISSN: 2589-0042
Titre abrégé: iScience
Pays: United States
ID NLM: 101724038
Informations de publication
Date de publication:
22 Dec 2022
22 Dec 2022
Historique:
received:
22
09
2022
revised:
31
10
2022
accepted:
30
11
2022
entrez:
29
12
2022
pubmed:
30
12
2022
medline:
30
12
2022
Statut:
epublish
Résumé
The cellular mechanisms of emotional contagion are unknown. We investigated tickle contagion and the underlying neuronal representations in playful rats. We recorded trunk somatosensory cortex activity of observer rats while they received tickling and audiovisual playback of tickling footage and while they witnessed tickling of demonstrator rats. Observers vocalized and showed "Freudensprünge" ("joy jumps") during witnessing live tickling, while they showed little behavioral responses to playbacks. Deep layers in the trunk somatosensory neurons showed a larger correlation between direct and witnessed tickling responses compared to superficial layers. Trunk somatosensory neurons discharged upon emission of own and demonstrator's vocalizations and might drive contagious "laughter". We conclude that trunk somatosensory cortex might represent ticklishness contagion.
Identifiants
pubmed: 36578320
doi: 10.1016/j.isci.2022.105718
pii: S2589-0042(22)01991-5
pmc: PMC9791364
doi:
Types de publication
Journal Article
Langues
eng
Pagination
105718Informations de copyright
© 2022 The Author(s).
Déclaration de conflit d'intérêts
The authors declare no conflict of interest.
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