Self-touch modulates the somatosensory evoked P100
Loading...
Download
Associated Records
Authors
File Licence
Editors
Date
2015-10-26
Source Title
Experimental Brain Research
Journal Title
Journal ISSN
Volume Title
Publisher
SPRINGER
Melbourne Authors
Affiliation
Melbourne School of Psychological Sciences
Document Type
Journal Article
Subject Code
Citation
Hogendoorn, H., Kammers, M., Haggard, P. & Verstraten, F. (2015). Self-touch modulates the somatosensory evoked P100. Experimental Brain Research, 233 (10), pp.2845-2858. https://doi.org/10.1007/s00221-015-4355-0.
Access Status
Open Access
Access URL
Open Access URL
Open Access at PMC
Linked Resource URL
NHMRC Grant Code
ARC Grant Code
Description
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.