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Updated: Aug 15, 2025

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Brain Morphology of Cannabis Users With or Without Psychosis: A Pilot MRI Study
Published on: August 18, 2020
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How Do Cannabis and Synthetic Cannabinoids Affect Neurocognitive Functions?
Turk Psikiyatri Dergisi = Turkish Journal of Psychiatry
|January 2, 2023
Summary
Synthetic cannabinoid users showed the poorest cognitive function, while cannabis users struggled with specific executive functions. Cognitive rehabilitation may improve addiction treatment success.
Area of Science:
- Neuroscience
- Psychiatry
- Addiction Medicine
Background:
- Cannabis and synthetic cannabinoid use are prevalent, with potential neurocognitive consequences.
- Understanding the differential impact on cognitive domains is crucial for targeted interventions.
Purpose of the Study:
- To assess and compare neurocognitive function deficits in individuals using cannabis versus synthetic cannabinoids.
- To evaluate specific cognitive areas including attention, memory, executive functions, and visuospatial perception.
Main Methods:
- A comparative study involving 160 participants: 52 cannabis users, 51 synthetic cannabinoid users, and 57 healthy controls.
- Utilized standardized neuropsychological tests to evaluate attention, executive functions, visuospatial perception, learning and memory, planning, and word naming.
Main Results:
- Synthetic cannabinoid users exhibited the lowest performance across most cognitive domains, including attention, visuospatial skills, and memory.
- Cannabis users demonstrated deficits in response rate, perseveration, abstract thinking, and recognition.
- Planning and problem-solving abilities were not significantly affected by substance use history.
Conclusions:
- Synthetic cannabinoids appear to have a more detrimental effect on neurocognition than cannabis.
- Cognitive rehabilitation programs integrated with addiction treatment could enhance recovery outcomes.
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