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Primary somatosensory cortical processing in tactile communication
Linköping University, Department of Biomedical and Clinical Sciences, Center for Social and Affective Neuroscience. Linköping University, Faculty of Medicine and Health Sciences.
Linköping University, Department of Biomedical and Clinical Sciences, The Division of Cell and Neurobiology. Linköping University, Faculty of Medicine and Health Sciences. Linköping University, Center for Medical Image Science and Visualization (CMIV).ORCID iD: 0000-0002-4506-1881
Monash Univ, Australia.
Linköping University, Department of Biomedical and Clinical Sciences, Center for Social and Affective Neuroscience. Linköping University, Faculty of Medicine and Health Sciences.ORCID iD: 0000-0002-0544-6533
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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

Available from: 2024-09-03 Created: 2024-09-03 Last updated: 2024-09-23

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Maallo, AnneNovembre, GiovanniMcintyre, SarahOlausson, HåkanBöhme, Rebecca
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Center for Social and Affective NeuroscienceFaculty of Medicine and Health SciencesThe Division of Cell and NeurobiologyCenter for Medical Image Science and Visualization (CMIV)Department of Clinical Neurophysiology
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Philosophical Transactions of the Royal Society of London. Biological Sciences
Bioinformatics (Computational Biology)

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