Effects of Chronic Cannabis Use on Contrast Sensitivity in Driving
This study aims to compare the contrast detection threshold in driving among three groups: chronic cannabis users, occasional users, and non-users.
electroretinogram
+ contrast sensitivity tests
+ electroretinogram
Mental Disorders+1
+ Substance-Related Disorders
+ Chemically-Induced Disorders
Other Study
Summary
Study start date: March 22, 2013
Actual date on which the first participant was enrolled.With the rise in driving under cannabis influence and its involvement in a third of motor vehicle collisions, this study focuses on understanding the effects of chronic cannabis use on contrast sensitivity. Contrast sensitivity is the ability to distinguish between an object and its background, which is crucial for safe driving. The study targets individuals who are addicted to cannabis, as chronic use may impair this ability due to changes in dopamine regulation. By comparing the results with standard references, the study aims to highlight potential risks associated with cannabis use and improve road safety. The study involves 36 cannabis addicts, 36 tobacco addicts, and 36 non-smokers. Participants will view gratings with varying spatial frequencies, and the study will determine their contrast thresholds for both static and moving gratings. The primary outcome is the comparison of contrast detection thresholds among the three groups. Researchers predict that cannabis addicts may show abnormal contrast sensitivity, particularly when the gratings are in motion.
Protocol
This section provides details of the study plan, including how the study is designed and what the study is measuring.95 patients to be enrolled
Total number of participants that the clinical trial aims to recruit.Other Study
Eligibility
Researchers look for people who fit a certain description, called eligibility criteria: person's general health condition or prior treatments.Any sex
Biological sex of participants that are eligible to enroll.From 18 to 50 Years
Range of ages for which participants are eligible to join.Healthy volunteers allowed
If individuals who are healthy and do not have the condition being studied can participate.Conditions
Pathology
Criteria
Study Plan
Find out more about all the medication administered in this study, their detailed description and what they involve.3 intervention groups are designated in this study
This study does not include a placebo group
Treatment Groups
Group I
Group II
Group III
Study Objectives
Primary Objectives
Study Centers
These are the hospitals, clinics, or research facilities where the trial is being conducted. You can find the location closest to you and its status.This study has 1 location