How cannabis tolerance affects eye movement and thinking
Treatments studied
Part of Mental health clinical trials.
This study gives a single dose of THC (the active ingredient in cannabis) and tests how it affects your eye movements and thinking. Researchers want to see if frequent cannabis users are less affected than occasional users.
Summary written for real people, not researchers, by Clin2.
Who can take part
- You are between 18 and 60 years old.
- You either rarely use cannabis (at least once in the past year but test negative for it on a urine drug screen) OR you use cannabis frequently (more than 5 days a week for over a year and test positive for it on a urine drug screen).
- You do not have problems with drugs or alcohol (except tobacco, cannabis, or caffeine).
- You are not currently seeking or interested in treatment to stop using cannabis.
- You are not pregnant, planning to become pregnant in the next 3 months, or breastfeeding.
- You are not taking any medications that could affect the study results and have no serious health conditions.
Quick eligibility check
Answer a few plain-language questions, based on this study's own requirements, to get a preliminary sense of fit.
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