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  Differential effects of pain and spatial attention on digit representation in the human primary somatosensory cortex

Buchner, H., Richrath, P., Grünholz, J., Noppeney, U., Waberski, T., Gobbelé, R., et al. (2000). Differential effects of pain and spatial attention on digit representation in the human primary somatosensory cortex. NeuroReport, 11(6), 1289-1293.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-E505-F Version Permalink: http://hdl.handle.net/21.11116/0000-0005-B072-3
Genre: Journal Article

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Buchner, H, Author
Richrath, P, Author
Grünholz, J, Author
Noppeney, U1, Author              
Waberski, TD, Author
Gobbelé, R, Author
Willmes, K, Author
Treede, RD, Author
Affiliations:
1External Organizations, ou_persistent22              

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 Abstract: Reorganization of primary somatosensory cortex subsequent to either reduced or enhanced peripheral input is well established. Recently, plastic changes following arm amputation in humans were shown to correlate with phantom limb pain. This raised the question whether spatial attention and pain may cause cortical reorganization in the absence of deafferentation. Using non-invasive neuroelectric imaging to study the digit representation in the human primary somatosensory cortex, we report a delayed shift of the representation of digits 2-3 due to pain on the digits 4-5, which outlasted the pain by several minutes. In contrast, reorganization during spatial attention was less pronounced, was seen almost immediately and only during the condition. These data indicate that spatial attention and pain without peripheral deafferentation cause cortical reorganization by different mechanisms. The differential time course of reorganizational effects observed at the cortex may be due to modulation of the lemniscal pathway s by nociceptive input from the spinal cord dorsal horn.

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 Dates: 2000-04
 Publication Status: Published in print
 Pages: -
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 Rev. Method: -
 Identifiers: BibTex Citekey: 3705
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Title: NeuroReport
Source Genre: Journal
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Publ. Info: Oxford, UK : Rapid Communications of Oxford Ltd.
Pages: - Volume / Issue: 11 (6) Sequence Number: - Start / End Page: 1289 - 1293 Identifier: ISSN: 0959-4965
CoNE: https://pure.mpg.de/cone/journals/resource/954925578070