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Deterioration of executive functioning in chronic ecstasy users; evidence for multiple drugs effects
1Section Psychopharmacology, Faculty of Science, Utrecht University, Utrecht, The Netherlands. m.n.verbaten@uu.nl
Current Drug Abuse Reviews
|November 9, 2010
Summary
Chronic ecstasy use impairs working memory, specifically updating, attention shifting, and long-term memory access. However, inhibition remained unaffected, and no dose-response relationship was found for ecstasy or other drug consumption.
Area of Science:
- Neuroscience
- Psychology
Background:
- Chronic ecstasy (MDMA) use is associated with cognitive deficits.
- Working memory (WM) is crucial for cognitive function and comprises central executive and subcomponents.
Purpose of the Study:
- To quantitatively analyze the chronic effects of ecstasy on working memory subcomponents.
- To investigate dose-response relationships between ecstasy consumption and executive functions.
Main Methods:
- A meta-analysis of studies published between January 1998 and January 2008.
- Inclusion criteria required meta-analysis data and polydrug users as controls.
- Regression analyses were performed on lifetime consumption and executive functioning effect sizes.
Main Results:
- Ecstasy users showed significant deficits in updating, attention shifting, and access to long-term memory.
- No significant impact was observed on inhibition.
- Ecstasy users consumed more amphetamines, cocaine, alcohol, nicotine, and LSD than controls.
Conclusions:
- Chronic ecstasy use negatively affects specific executive functions within working memory.
- No clear dose-response relationship was identified for ecstasy or co-consumed substances.
- Further research is needed to understand the long-term neurological impact of recreational drug use.
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