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Related Experiment Videos

Smoking cues decrease prepulse inhibition of the startle response and increase subjective craving in humans.

K E Hutchison1, R Niaura, R Swift

  • 1Department of Psychology, University of Colorado at Boulder 80309-0345, USA. kenth@psych.colorado.edu

Experimental and Clinical Psychopharmacology
|September 3, 1999
PubMed
Summary
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Exposure to smoking cues significantly reduced startle reflex prepulse inhibition (PPI) and increased craving in smokers. These findings suggest smoking cues disrupt information processing, potentially impacting dopamine activity.

Area of Science:

  • Neuroscience
  • Psychology
  • Addiction Research

Background:

  • Smoking cues are known triggers for relapse in individuals attempting to quit.
  • Understanding the neurocognitive mechanisms underlying cue-induced craving is crucial for developing effective interventions.

Purpose of the Study:

  • To investigate the impact of smoking cue exposure on prepulse inhibition (PPI) of the startle reflex.
  • To examine how smoking cues affect craving, negative affect, and positive affect in smokers.

Main Methods:

  • Twenty-six smokers participated in two experimental sessions, one week apart.
  • Participants were exposed to either smoking cues or control cues in a counterbalanced order.
  • Prepulse inhibition (PPI) of the startle reflex and self-reported craving, affect, and mood were measured.

Related Experiment Videos

Main Results:

  • Smoking cues reliably attenuated PPI compared to control cues in both sessions.
  • Exposure to smoking cues significantly increased craving and negative affect, while reducing positive affect.
  • The observed disruption in PPI suggests altered information processing or dopamine activation.

Conclusions:

  • Smoking cues disrupt sensorimotor gating, as evidenced by the attenuation of PPI.
  • Cue-induced changes in affect and craving are consistently linked to disruptions in PPI.
  • Findings support the role of altered information processing and potential dopamine dysregulation in smoking cue reactivity.