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  The functional architecture of S1 during touch observation described with 7 T fMRI

Kuehn, E., Mueller, K., Turner, R., & Bosbach, S. (2014). The functional architecture of S1 during touch observation described with 7 T fMRI. Brain Structure & Function, 219(1), 119-140. doi:10.1007/s00429-012-0489-z.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-000E-7024-4 Version Permalink: http://hdl.handle.net/21.11116/0000-0003-8204-5
Genre: Journal Article

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 Creators:
Kuehn, Esther1, Author              
Mueller, Karsten2, Author              
Turner, Robert3, Author              
Bosbach, Simone1, Author              
Affiliations:
1Max Planck Research Group Body and Self, MPI for Human Cognitive and Brain Sciences, Max Planck Society, ou_634554              
2Methods and Development Unit Nuclear Magnetic Resonance, MPI for Human Cognitive and Brain Sciences, Max Planck Society, ou_634558              
3Department Neurophysics, MPI for Human Cognitive and Brain Sciences, Max Planck Society, ou_634550              

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Free keywords: Empathy; Primary somatosensory cortex; Mirror neuron system; Shared representations; Suppressive interactions; Receptive field
 Abstract: Recent studies indicate that the primary somatosensory cortex (S1) is active not only when touch is physically perceived but also when it is merely observed to be experienced by another person. This social responsivity of S1 has important implications for our understanding of S1 functioning. However, S1 activity during touch observation has not been characterized in great detail to date. We focused on two features of the S1 functional architecture during touch observation, namely the topographical arrangement of index and middle finger receptive fields (RFs), and their dynamic shrinkage during concurrent activation. Both features have important implications for human behavior. We conducted two fMRI studies at 7 T, one where touch was physically perceived, and one where touch was observed. In the two experiments, participants either had their index finger and/or middle finger stimulated using paintbrushes, or just observed similar touch events on video. Our data show that observing and physically experiencing touch elicits overlapping activity changes in S1. In addition, observing touch to the index finger or the middle finger alone evoked topographically arranged activation foci in S1. Importantly, when co-activated, the index and middle finger RFs not only shrank during physical touch perception, but also during touch observation. Our data, therefore, indicate a similarity between the functional architecture of S1 during touch observation and physical touch perception with respect to single-digit topography and RF shrinkage. These results may allow the tentative conclusion that even primary somatosensory experiences, such as physical touch perception, can be shared amongst individuals.

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Language(s): eng - English
 Dates: 2012-07-072012-11-202013-01-032014-01
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.1007/s00429-012-0489-z
PMID: 23283478
PMC: PMC3889700
Other: Epub 2013
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Title: Brain Structure & Function
  Abbreviation : Brain Struct Funct
Source Genre: Journal
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Publ. Info: Berlin : Springer
Pages: - Volume / Issue: 219 (1) Sequence Number: - Start / End Page: 119 - 140 Identifier: ISSN: 1863-2653
CoNE: /journals/resource/1863-2653