Actively Recruiting
Distinguishing Alcohol Intoxication, Cannabis Intoxication and Co-intoxication Using Electroencephalography (EEG)
Led by Colorado State University · Updated on 2025-11-13
99
Participants Needed
1
Research Sites
125 weeks
Total Duration
On this page
AI-Summary
What this Trial Is About
This is a randomized, parallel-group study designed to explore the differences between cannabis intoxication, alcohol intoxication and co-intoxication involving both alcohol and cannabis, utilizing electroencephalography (EEG) as well as more traditional intoxication measures such as breath alcohol concentration and balance metrics. If eligible for the study, participants will be randomized to complete one study session in our mobile laboratory, during which they will use either alcohol, cannabis (which will be self-administered, ad libitum) or both alcohol and cannabis.
CONDITIONS
Official Title
Distinguishing Alcohol Intoxication, Cannabis Intoxication and Co-intoxication Using Electroencephalography (EEG)
Who Can Participate
Eligibility Criteria
You may qualify if you...
- Age between 21 and 50 years
- Heavy alcohol drinkers (more than 4 drinks/day or 14 drinks/week for men; more than 3 drinks/day or 7 drinks/week for women)
- Regular users of legal-market flower cannabis at least twice a week in the past 3 months
- Report using alcohol and legal-market flower cannabis together at least once per month in the past 3 months
- Able to speak English
You will not qualify if you...
- Daily tobacco users
- Diagnosed with or seeking treatment for alcohol use disorder or other substance use disorders
- Females who are pregnant, breastfeeding, or trying to become pregnant
- History or current diagnosis of psychotic, bipolar, or major depressive disorder with suicidal thoughts
- Current use of psychotropic medications except antidepressants
- Illicit drug use in the past 60 days or positive drug screen on study day
- Major medical conditions that contraindicate alcohol or cannabis use
AI-Screening
AI-Powered Screening
Complete this quick 3-step screening to check your eligibility
Trial Site Locations
Total: 1 location
1
Colorado State University
Fort Collins, Colorado, United States, 80523
Actively Recruiting
Research Team
H
Hollis C Karoly, PhD
CONTACT
P
Patricia Davies, PhD
CONTACT
How is the study designed?
Study Type
INTERVENTIONAL
Masking
NONE
Allocation
RANDOMIZED
Model
PARALLEL
Primary Purpose
OTHER
Number of Arms
3
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