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Related Experiment Video

Updated: Jun 29, 2026

Assessment of Cocaine-induced Behavioral Sensitization and Conditioned Place Preference in Mice
10:28

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Published on: February 18, 2016

Individual differences among cocaine users.

E D Gunnarsdóttir1, R A Pingitore, B J Spring

  • 1Finch University of Health Sciences/The Chicago Medical School, IL, USA.

Addictive Behaviors
|October 7, 2000
PubMed
Summary
This summary is machine-generated.

Cocaine users motivated by negative moods (self-medicators) reported higher anxiety and showed reduced left frontal lobe activity compared to sensation seekers. Understanding these personality differences can improve cocaine addiction treatment.

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Area of Science:

  • Neuroscience
  • Psychology
  • Addiction Research

Background:

  • Individual differences in personality may influence cocaine use motivations.
  • Two distinct user profiles, self-medicators (SM) and sensation seekers (SS), are proposed.
  • SM may use cocaine to alleviate dysphoria, while SS may use it to enhance positive moods.

Purpose of the Study:

  • To differentiate cocaine users based on personality traits.
  • To investigate if self-medication (SM) and sensation-seeking (SS) cocaine users differ in mood states and brain activity.
  • To explore the implications for targeted addiction treatment.

Main Methods:

  • Classified 18 male cocaine users into SM and SS groups using the Tridimensional Personality Questionnaire.
  • Assessed self-reported depression and anxiety levels.
  • Measured brain activity using regional cerebral blood flow (rCBF) via SPECT imaging.

Main Results:

  • Self-medicating (SM) cocaine users reported significantly higher anxiety than sensation-seeking (SS) users.
  • No significant difference in depression levels was found between SM and SS groups.
  • SM users exhibited reduced blood flow in the left frontal lobes, a pattern associated with major depressive disorder.

Conclusions:

  • Personality traits differentiate cocaine use motivations, impacting user profiles.
  • Self-medicating cocaine users display distinct psychological and neurobiological characteristics.
  • Tailoring addiction treatments to individual motivations and personality profiles is crucial for efficacy.