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Direct skin-to-skin vs. indirect touch modulates neural responses to stroking vs. tapping

Identifieur interne : 001A65 ( Pmc/Corpus ); précédent : 001A64; suivant : 001A66

Direct skin-to-skin vs. indirect touch modulates neural responses to stroking vs. tapping

Auteurs : Inge U. Kress ; Ludovico Minati ; Stefania Ferraro ; Hugo D. Critchley

Source :

RBID : PMC:3160479

Abstract

It remains unclear whether direct inter-personal contact is processed differently from similar soft touch applied through inanimate objects. We performed a functional MRI (fMRI) experiment in healthy volunteers, whereby activity during gentle stroking or tapping was compared between stimuli delivered using the experimenter’s hand or a velvet stick. Stroking with a hand elicited larger responses than the other three conditions in the contralateral primary and secondary somatosensory areas and posterior insula. The observed effects likely originate from a combination of perceptual differences and cognitive and emotional correlates of contact with another person. This empirical observation indicates that to ensure ecological validity studies of affective touch processing should be performed with stimuli delivered with direct inter-personal contact rather than inanimate objects.


Url:
DOI: 10.1097/WNR.0b013e328349d166
PubMed: 21817928
PubMed Central: 3160479

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