Primary somatosensory cortical processing in tactile communicationShow others and affiliations
2024 (English)In: Philosophical Transactions of the Royal Society of London. Biological Sciences, ISSN 0962-8436, E-ISSN 1471-2970, Vol. 379, no 1908, article id 20230249Article in journal (Refereed) Published
Abstract [en]
Touch is an essential form of non-verbal communication. While language and its neural basis are widely studied, tactile communication is less well understood. We used fMRI and multivariate pattern analyses in pairs of emotionally close adults to examine the neural basis of human-to-human tactile communication. In each pair, a participant was designated either as sender or as receiver. The sender was instructed to communicate specific messages by touching only the arm of the receiver, who was inside the scanner. The receiver then identified the message based on the touch expression alone. We designed two multivariate decoder algorithms-one based on the sender's intent (sender-decoder), and another based on the receiver's response (receiver-decoder). We identified several brain areas that significantly predicted behavioural accuracy of the receiver. Regarding our a priori region of interest, the receiver's primary somatosensory cortex (S1), both decoders were able to accurately differentiate the messages based on neural activity patterns here. The receiver-decoder, which relied on the receivers' interpretations of the touch expressions, outperformed the sender-decoder, which relied on the sender's intent. Our results identified a network of brain areas involved in human-to-human tactile communication and supported the notion of non-sensory factors being represented in S1.This article is part of the theme issue 'Sensing and feeling: an integrative approach to sensory processing and emotional experience'.
Place, publisher, year, edition, pages
ROYAL SOC , 2024. Vol. 379, no 1908, article id 20230249
Keywords [en]
touch; fMRI; communication
National Category
Bioinformatics (Computational Biology)
Identifiers
URN: urn:nbn:se:liu:diva-207142DOI: 10.1098/rstb.2023.0249ISI: 001289587600014PubMedID: 39005043OAI: oai:DiVA.org:liu-207142DiVA, id: diva2:1894494
Note
Funding Agencies|Vetenskapsrdet
2024-09-032024-09-032024-09-23