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Updated: Sep 13, 2025
09:16
A General Method for Evaluating Deep Brain Stimulation Effects on Intravenous Methamphetamine Self-Administration
Published on: January 22, 2016
15.3K
Individuals recently abstinent from methamphetamine show selective cognitive and behavioral differences when compared
M Frances Vest1,2, Alexandru Mihai Dumitrescu1,2, Matthew W Johnson3
1Department of Pharmacology, Toxicology & Neuroscience, Louisiana State University Health Science Center Shreveport, Shreveport, LA, United States.
Frontiers in Psychiatry
|July 28, 2025
Summary
Individuals with methamphetamine use disorder show impaired response inhibition, not risk-taking. This finding highlights the need to target specific cognitive deficits in addiction treatment for better recovery outcomes.
Area of Science:
- Neuroscience
- Psychology
- Addiction Research
Background:
- Substance use disorders, including methamphetamine use disorder (MUD), are linked to cognitive and behavioral impairments.
- It is unclear if response inhibition or risk-taking are more affected in MUD.
Purpose of the Study:
- To investigate specific impulsivity subdomains in individuals recently abstinent from methamphetamine.
- To differentiate between deficits in response inhibition and risk-taking in MUD.
Main Methods:
- 29 individuals with MUD and 27 age-matched controls participated.
- Cognitive tasks included the Iowa Gambling Task (IGT), Balloon Analogue Risk Task (BART), Stroop Color and Word Task (SCWT), and Stop Signal Task (SST).
Main Results:
- No significant group differences were found in risk-taking tasks (IGT, BART).
- Individuals with MUD exhibited significantly poorer response inhibition, indicated by longer Stop Signal Task reaction times and lower Stroop Color and Word Task accuracy.
Conclusions:
- Methamphetamine use disorder is associated with specific deficits in response inhibition.
- Targeting these cognitive abnormalities in treatment may enhance recovery for individuals with MUD.
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