Nicotine administration enhances negative occasion setting in adolescent rats

Behavioural Brain Research
Heidi C MeyerDavid J Bucci

Abstract

Substantial research has established that exposure to nicotine during adolescence can lead to long-term changes in neural circuitry and behavior. However, relatively few studies have considered the effects of nicotine use on cognition during this critical stage of brain development. This is significant because the influence of nicotine on cognitive performance during adolescence may contribute to the development of regular nicotine use. For example, improvements in cognitive functioning may increase the perceived value of smoking and facilitate impulses to smoke. To address this, the present research tested the effects of nicotine on a form of inhibitory learning during adolescence. Specifically, adolescent rats were exposed to nicotine as they were trained in a negative occasion setting paradigm, in which successful performance depends on learning the conditions under which it is, or is not, appropriate to respond to a target stimulus. Here, we found that nicotine administration enhances negative occasion setting in adolescents. In addition, nicotine increased the amount of orienting behavior directed toward the inhibitory stimulus, suggesting that improvements in this form of behavioral inhibition may be attributed to nicotin...Continue Reading

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Citations

Feb 13, 2020·Pediatrics·Sharon A McGrath-MorrowJonathan D Klein

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