Hallucinogens and Psychedelics
Self-Regulation
Stress and Mental Health
CNS Stimulants: Cocaine, Amphetamines and Cannabinoids
Attention-Deficit/Hyperactivity Disorder
Altered States of Awareness
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Updated: Mar 1, 2026

Brain Morphology of Cannabis Users With or Without Psychosis: A Pilot MRI Study
Published on: August 18, 2020
Kaeli Zimmermann1, Christina Walz2,3, Raissa T Derckx1
1Department of Psychiatry and Division of Medical Psychology, University of Bonn, Bonn, 53105, Germany.
Regular marijuana users show impaired emotion regulation, with increased frontal brain activity and reduced amygdala control. This suggests disrupted brain networks may contribute to substance use.
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