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Article: Gamma-band oscillations in the primary somatosensory cortex: a direct and obligatory correlate of subjective pain intensity

TitleGamma-band oscillations in the primary somatosensory cortex: a direct and obligatory correlate of subjective pain intensity
Authors
Issue Date2012
PublisherSociety for Neuroscience. The Journal's web site is located at http://www.jneurosci.org
Citation
Journal of Neuroscience, 2012, v. 32 n. 22, p. 7429-7438 How to Cite?
AbstractElectroencephalographic gamma band oscillations (GBOs) induced over the human primary somatosensory cortex (SI) by nociceptive stimuli have been hypothesized to reflect cortical processing involved directly in pain perception, because their magnitude correlates with pain intensity. However, as stimuli perceived as more painful are also more salient, an alternative interpretation of this correlation is that GBOs reflect unspecific stimulus-triggered attentional processing. In fact, this is suggested by recent observations that other features of the electroencephalographic (EEG) response correlate with pain perception when stimuli are presented in isolation, but not when their saliency is reduced by repetition. Here, by delivering trains of three nociceptive stimuli at a constant 1 s interval, and using different energies to elicit graded pain intensities, we demonstrate that GBOs recorded over SI always predict the subjective pain intensity, even when saliency is reduced by repetition. These results provide evidence for a close relationship between GBOs and the cortical activity subserving pain perception.
Persistent Identifierhttp://hdl.handle.net/10722/159522
ISSN
2015 Impact Factor: 5.924
2015 SCImago Journal Rankings: 5.105
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorZhang, ZGen_US
dc.contributor.authorHu, Len_US
dc.contributor.authorHung, YSen_US
dc.contributor.authorMouraux, Aen_US
dc.contributor.authorIannetti, GDen_US
dc.date.accessioned2012-08-16T05:51:31Z-
dc.date.available2012-08-16T05:51:31Z-
dc.date.issued2012en_US
dc.identifier.citationJournal of Neuroscience, 2012, v. 32 n. 22, p. 7429-7438en_US
dc.identifier.issn0270-6474-
dc.identifier.urihttp://hdl.handle.net/10722/159522-
dc.description.abstractElectroencephalographic gamma band oscillations (GBOs) induced over the human primary somatosensory cortex (SI) by nociceptive stimuli have been hypothesized to reflect cortical processing involved directly in pain perception, because their magnitude correlates with pain intensity. However, as stimuli perceived as more painful are also more salient, an alternative interpretation of this correlation is that GBOs reflect unspecific stimulus-triggered attentional processing. In fact, this is suggested by recent observations that other features of the electroencephalographic (EEG) response correlate with pain perception when stimuli are presented in isolation, but not when their saliency is reduced by repetition. Here, by delivering trains of three nociceptive stimuli at a constant 1 s interval, and using different energies to elicit graded pain intensities, we demonstrate that GBOs recorded over SI always predict the subjective pain intensity, even when saliency is reduced by repetition. These results provide evidence for a close relationship between GBOs and the cortical activity subserving pain perception.-
dc.languageengen_US
dc.publisherSociety for Neuroscience. The Journal's web site is located at http://www.jneurosci.org-
dc.relation.ispartofJournal of Neuroscienceen_US
dc.rightsJournal of Neuroscience. Copyright © Society for Neuroscience.-
dc.subject.meshBrain Mapping-
dc.subject.meshEvoked Potentials, Somatosensory - physiology-
dc.subject.meshPain - psychology-
dc.subject.meshPain Perception - physiology-
dc.subject.meshSomatosensory Cortex - physiology-
dc.titleGamma-band oscillations in the primary somatosensory cortex: a direct and obligatory correlate of subjective pain intensityen_US
dc.typeArticleen_US
dc.identifier.emailZhang, ZG: zgzhang@eee.hku.hken_US
dc.identifier.emailHung, YS: yshung@eee.hku.hken_US
dc.identifier.authorityZhang, Z=rp01565en_US
dc.identifier.authorityHung, YS=rp00220en_US
dc.description.naturelink_to_OA_fulltext-
dc.identifier.doi10.1523/JNEUROSCI.5877-11.2012-
dc.identifier.pmid22649223-
dc.identifier.scopuseid_2-s2.0-84861599446-
dc.identifier.hkuros203539en_US
dc.identifier.volume32en_US
dc.identifier.issue22-
dc.identifier.spage7429-
dc.identifier.epage7438-
dc.identifier.eissn1529-2401-
dc.identifier.isiWOS:000304627100003-
dc.publisher.placeUnited States-

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