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Nicotine Deprivation Produces Deficits in Pain Perception that are Moderately Attenuated by Caffeine Consumption
Brandon A Baiamonte1, Sarah C Stickley2, Sarah J Ford2
1a Associate Professor, Department of Psychology , Southeastern Louisiana University , Hammond , LA , USA.
Abstract:
During withdrawal, nicotine users experience aversive withdrawal symptoms, such as increased nociceptive processing, which may be responsible for subsequent use. Smokers often consume more caffeine than non-smokers and the combined effects of these two psychoactive drugs result in an enhanced analgesic effect of nicotine. We examined the effects of caffeine (via coffee consumption) and nicotine withdrawal on pain perception in minimally deprived smokers and non-smokers. Pain threshold and pain tolerance were assessed using a radiant heat stimulus before and 30 minutes after caffeine consumption. Nicotine deprivation (2 hrs) produced increases in pain threshold and decreases in pain tolerance representative of hyperalgesia. When smokers are nicotine deprived, caffeine consumption diminished baseline elevations in pain threshold, but had no effect on pain tolerance. These data suggest that caffeine consumption can dampen deficits in sensory discrimination related to pain during nicotine deprivation by reducing pain threshold to levels representative of non-smoking controls.
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