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Interactions between recreational cannabis use and cognitive function: lessons from functional magnetic resonance
Kelly A Sagar1,2,3, Staci A Gruber1,2
1Cognitive and Clinical Neuroimaging Core, McLean Hospital, Belmont, Massachusetts.
Annals of the New York Academy of Sciences
|November 15, 2018
Summary
Cannabis use impacts brain function, affecting cognitive tasks like executive function and memory. Factors such as age and abstinence duration influence these neural changes, with implications for public policy.
Area of Science:
- Neuroscience
- Cognitive Science
- Psychiatry
Background:
- Cannabis legalization is increasing, leading to widespread use.
- Understanding the neural effects of cannabis is crucial.
Purpose of the Study:
- To review functional magnetic resonance imaging (fMRI) studies on cannabis use and brain function.
- To examine acute and residual alterations in cognitive domains.
Main Methods:
- Systematic review of fMRI studies.
- Analysis of cognitive tasks including executive function, attention, memory, motor skills, error monitoring, and reward processing.
Main Results:
- Cannabis use demonstrably affects brain function across various cognitive domains.
- Findings show inconsistencies, influenced by factors like age of onset, duration of use, and abstinence period.
- Differences between recreational and medical cannabis use are noted.
Conclusions:
- Cannabis use alters brain function, but outcomes vary based on individual and usage factors.
- Further research is needed to clarify these complex relationships.
- Consideration of usage patterns is vital for interpreting research and informing policy.
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