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Self-touch modulates the somatosensory evoked P100

Hogendoorn, H; Kammers, M; Haggard, P; Verstraten, F; (2015) Self-touch modulates the somatosensory evoked P100. Experimental Brain Research , 233 (10) pp. 2845-2858. 10.1007/s00221-015-4355-0. Green open access

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Abstract

It has recently been shown that contact between one’s own limbs (self-touch) reduces the perceived intensity of pain, over and above the well-known modulation of pain by simultaneous colocalized tactile input Kammers et al. (Curr Biol 20:1819–1822, 2010). Here, we investigate how self-touch modulates somatosensory evoked potentials (SEPs) evoked by afferent somatosensory input. We show that the P100 SEP component, which has previously been implicated in the conscious perception of a tactile stimulus, is enhanced during self-touch, as compared to when one is touching nothing, an inanimate object, or another person. A follow-up experiment showed that there was no effect of self-touch on SEPs when the body parts in contact were not symmetric. Altogether, our findings suggest the interpretation that the secondary somatosensory cortex might underlie the specific analgesic effect of self-touch.

Type: Article
Title: Self-touch modulates the somatosensory evoked P100
Open access status: An open access version is available from UCL Discovery
DOI: 10.1007/s00221-015-4355-0
Publisher version: http://doi.org/10.1007/s00221-015-4355-0
Language: English
Additional information: © The Author(s) 2015. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
Keywords: Science & Technology, Life Sciences & Biomedicine, Neurosciences, Neurosciences & Neurology, Self-touch, SEPs, Somatosensory evoked potentials, Nociception, Analgesia, VISUAL DISTORTION, PAIN, CORTEX, REPRESENTATION, CONSCIOUSNESS, ORIENTATION, POTENTIALS, FINGER, SHAPE, SIZE
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > Div of Psychology and Lang Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > Div of Psychology and Lang Sciences > Institute of Cognitive Neuroscience
URI: https://discovery.ucl.ac.uk/id/eprint/1491665
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