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Abstract
Contingent negative variation (CNV) behavior was studied in 16 volunteers who were
suffering from spontaneous recurrent pain syndromes (idiopathic trigeminal neuralgia,
classic migraine). The subjects were divided into two groups, “more anxious” and “less
anxious,” based on psychometric tests (MMPI and STAI X2). The CNV recordings were
carried out, respectively, in basal resting state, during an episode of pain, while
under anxiolytic treatment, and lastly, during an episode of pain while under anxiolytic
therapy. CNV voltage decrease and frequent appearance of postimperative negative variation
(PINV) were observed when pain was present during the recording session. These phenomena
were more marked when the pain was accompanied by a greater degree of anxiety. Finally,
our results suggest that this slow evoked potential is sensitive to various degrees
of anxiety and to pain perception in man, making it useful in the investigation of
pain as a complex sensation.
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References
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Article info
Publication history
Received in revised form:
July 15,
1985
Received:
December 15,
1984
Identification
Copyright
© 1985 Published by Elsevier Inc.
