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The British Journal of Psychiatry 172: 537-539 (1998)
© 1998 The Royal College of Psychiatrists

Electroretinogram in withdrawn cocaine-dependent subjects. Relationship to cue-elicited craving

DA Smelson, M Roy, A Roy and S Santana
Department of Veterans Affairs, New Jersey Healthcare System, Lyons 07939, USA.

BACKGROUND: We have previously reported that people who are cocaine- dependent have reduced blue cone b-wave electroretinogram (ERG) responses. In this preliminary study, we examined the relationship between blue cone ERG amplitudes and craving response to cocaine cues. METHOD: A new series of 14 recently withdrawn subjects who were cocaine- dependent completed a cocaine craving questionnaire at baseline, and again following exposure to laboratory cues; an ERG was also performed. RESULTS: Cocaine-dependent subjects with a blunted ERG blue cone response (< 0.5 microV) showed significantly greater increases in craving following cue-exposure than subjects without the blunted ERG blue cone response. CONCLUSIONS: Subjects with a blunted ERG response may represent a subgroup more vulnerable to cocaine craving and relapse.


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Copyright © 1998 The Royal College of Psychiatrists.