Document Detail

Electrophysiological indices of orienting attention toward pain.
MedLine Citation:
PMID:  15318881     Owner:  NLM     Status:  MEDLINE    
This study examined the effects of orienting on two pain-related components of the sural nerve-evoked somatosensory evoked potential: the NDP (80-230 ms), which is generated in part by the anterior cingulate cortex (ACCc), and SP6 (280-340 ms). NDP and SP6 amplitudes were larger when subjects oriented their attention away from an invalidly cued location and toward the sural nerve pain than when their attention remained focused on the pain. These results and our earlier studies suggest that the ACCc activity generating the NDP is involved in detecting transient painful stimuli. This activity is enhanced when the pain occurs outside the focus of attention, and it may signal other brain areas that attention should be oriented away from its current focus and toward the pain. SP6 appears to be a pain-evoked P3a event-related potential, with an anterior component involved in orienting attention away from some other task and toward the pain, and an posterior component involved in evaluating the pain.
Robert Dowman
Publication Detail:
Type:  Clinical Trial; Journal Article    
Journal Detail:
Title:  Psychophysiology     Volume:  41     ISSN:  0048-5772     ISO Abbreviation:  Psychophysiology     Publication Date:  2004 Sep 
Date Detail:
Created Date:  2004-08-20     Completed Date:  2004-11-09     Revised Date:  2009-11-11    
Medline Journal Info:
Nlm Unique ID:  0142657     Medline TA:  Psychophysiology     Country:  United States    
Other Details:
Languages:  eng     Pagination:  749-61     Citation Subset:  IM    
Department of Psychology, Clarkson University, Potsdam, NY 13699-5825, USA.
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MeSH Terms
Attention / physiology*
Cerebral Cortex / physiology
Electric Stimulation
Evoked Potentials, Somatosensory / physiology
Pain / psychology*
Reaction Time / physiology
Sural Nerve / physiology

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