Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/5830
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dc.contributorDepartment of Rehabilitation Sciences-
dc.creatorChan, SCC-
dc.creatorChan, CCH-
dc.creatorKwan, ASK-
dc.creatorTing, KH-
dc.creatorChui, TY-
dc.date.accessioned2014-12-11T08:27:17Z-
dc.date.available2014-12-11T08:27:17Z-
dc.identifier.urihttp://hdl.handle.net/10397/5830-
dc.language.isoenen_US
dc.publisherPublic Library of Scienceen_US
dc.rights© 2012 Chan et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.en_US
dc.subjectEvent-related potentialsen_US
dc.subjectLaser-evoked-potentialsen_US
dc.subjectGo/nogo tasken_US
dc.subjectResponse-inhibitionen_US
dc.subjectStimulus probabilityen_US
dc.subjectNeural mechanismsen_US
dc.subjectSpatial attentionen_US
dc.subjectCingulate cortexen_US
dc.subjectStroop tasken_US
dc.subjectBrainen_US
dc.titleOrienting attention modulates pain perception : an ERP studyen_US
dc.typeJournal/Magazine Articleen_US
dc.identifier.spage1-
dc.identifier.epage12-
dc.identifier.volume7-
dc.identifier.issue6-
dc.identifier.doi10.1371/journal.pone.0040215-
dcterms.abstractIntroduction: Research has shown that people with chronic pain have difficulty directing their attention away from pain. A mental strategy that incorporates focused attention and distraction has been found to modulate the perception of pain intensity. That strategy involves placing attention on the nociceptive stimulus felt and shifting attention to a self-generated sub-nociceptive image and rehearsing it. Event-related potential was used to study the possible processes associated with the focus-then-orient strategy.-
dcterms.abstractMethods: Eighteen pain-free participants received different levels of 50-ms nociceptive stimulations elicited by electric shocks at the right lateral malleolus (ankle). In perception trials, participants maintained the perceived nociceptive stimulus in working memory for 3,000 ms. In imagery trials, participants mentally generated and maintained the corresponding sub-nociceptive image they had learned previously. After both types of trials, participants evaluated the pain intensity of the incoming stimulus by recalling the feeling of the nociceptive stimulation at the beginning of the trial.-
dcterms.abstractResults: Shifting attention from the incoming nociceptive to a self-generated sub-nociceptive image elicited central P2 and centro-parietal P3 waves, which were found to correlate with proportional scores on the Stroop Test. They were followed by a frontal N400 and a parietal P600, denoting generation of sub-nociceptive images in working memory. The voltages elicited in these potentials correlated moderately with attenuation of the pain ratings of the recalled nociceptive stimulations.-
dcterms.abstractConclusions: Focus-and-orient attention across nociceptive and sub-nociceptive images appears to be related to response inhibition. Mental rehearsal of the sub-nociceptive images was found to modulate the perception of the nociceptive sensation felt prior to the imagery. Such modulation seems to be mediated by generating and maintaining sub-nociceptive images in working memory. Future studies should explore the mental processes associated with orienting attention for pain modulation among people with pathological pain and frontal lobe dysfunction.-
dcterms.accessRightsopen accessen_US
dcterms.bibliographicCitationPLoS one, 29 June, 2012, v. 7, no. 6, e40215, p. 1-12-
dcterms.isPartOfPLoS one-
dcterms.issued2012-06-29-
dc.identifier.isiWOS:000305892100230-
dc.identifier.scopus2-s2.0-84863098537-
dc.identifier.pmid22768257-
dc.identifier.eissn1932-6203-
dc.identifier.rosgroupidr60720-
dc.description.ros2011-2012 > Academic research: refereed > Publication in refereed journal-
dc.description.oaVersion of Recorden_US
dc.identifier.FolderNumberOA_IR/PIRAen_US
dc.description.pubStatusPublisheden_US
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