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Bellard, A, Trotter, PD, McGlone, F and Cazzato, V (2023) Role of medial prefrontal cortex and primary somatosensory cortex in self and other-directed vicarious social touch: a TMS study. Social Cognitive and Affective Neuroscience, 18 (1). pp. 1-14. ISSN 1749-5016
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Role of medial prefrontal cortex and primary somatosensory cortex in self and other-directed vicarious social touch a TMS study.pdf - Published Version Available under License Creative Commons Attribution. Download (1MB) | Preview |
Abstract
Conflicting evidence points to the contribution of several key nodes of the 'social brain' to the processing of both discriminatory and affective qualities of interpersonal touch. Whether the primary somatosensory cortex (S1) and the medial prefrontal cortex (mPFC), two brain areas vital for tactile mirroring and affective mentalizing, play a functional role in shared representations of C-tactile (CT) targeted affective touch is still a matter of debate. Here, we used offline continuous theta-burst Transcranial Magnetic Stimulation (cTBS) to mPFC, S1 and Vertex (control) prior to participants providing ratings of vicarious touch pleasantness for self and others delivered across several body sites at CT-targeted velocities. We found that S1-cTBS led to a significant increase in touch ratings to the self, with this effect being positively associated to levels of interoceptive awareness. Conversely, mPFC-cTBS reduced pleasantness ratings for touch to another person. These effects were not specific for CT-optimal (slow) stroking velocities, but rather they applied to all types of social touch. Overall, our findings challenge the causal role of the S1 and mPFC in vicarious affective touch and suggest that self- vs. other-directed vicarious touch responses might crucially depend on the specific involvement of key social networks in gentle tactile interactions.
| Item Type: | Article |
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| Uncontrolled Keywords: | C-Tactile Afferents; Social Perception and Cognition Networks; Transcranial Magnetic Stimulation; Vicarious Social Touch; offline theta-burst stimulation; 1109 Neurosciences; 1701 Psychology; 1702 Cognitive Sciences; Experimental Psychology |
| Subjects: | B Philosophy. Psychology. Religion > BF Psychology R Medicine > RC Internal medicine > RC0321 Neuroscience. Biological psychiatry. Neuropsychiatry |
| Divisions: | Psychology (from Sep 2019) |
| Publisher: | Oxford University Press |
| SWORD Depositor: | A Symplectic |
| Date Deposited: | 16 Oct 2023 14:29 |
| Last Modified: | 13 Nov 2023 12:45 |
| DOI or ID number: | 10.1093/scan/nsad060 |
| URI: | https://researchonline.ljmu.ac.uk/id/eprint/21720 |
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