Related Experiment Video
Updated: Aug 18, 2026

Brain Morphology of Cannabis Users With or Without Psychosis: A Pilot MRI Study
Published on: August 18, 2020
[Acute and chronic cognitive disorders caused by cannabis use]
Laurent Karila1, Jean Vignau, Caroline Alter
1Département de psychiatrie et d'addictologie, hôpital universitaire Paul Brousse, 94804 Villejuif Cedex. laurent.karila@pbr.ap-hop-paris.fr
Abstract:
Cannabis is currently the most commonly used illegal psychoactive substance amongst young people aged between 15 and 24, and it seems that 5% of this age group is addicted to it. Many research teams focused particularly on the cognitive disorders caused by cannabis use. Amongst the cognitive functions considered, memory-related, attention-related, psychomotor and motivation-related functions were proved deteriorated by acute and chronic cannabis use; a very important point, especially among teenagers, as possible alteration at the social and academic level could be the outcome. However studies on long-term and persistent cognitive effects haven't provided convergent conclusions. Methodological differences could partly affect these observations. Therefore it seems necessary to develop studies with larger samples.
Related Concept Videos
CNS Stimulants: Cocaine, Amphetamines and Cannabinoids
Alzheimer Disease l: Introduction
Cognitive Enhancers: Cholinesterase Inhibitors and NMDA Receptor Antagonists
Dementia l: Introduction
Hepatic Encephalopathy
Alzheimer's Disease: Overview
The clinical diagnosis of AD hinges on the presence of memory and other cognitive impairments. Biomarkers, such as changes in Aβ and tau...

