Randomized Trialhigh evidence
Detection of Δ9-Tetrahydrocannabinol Impairment Using Resting-State Functional Near-Infrared Spectroscopy: A Randomized Clinical Trial.
JAMA network open·January 2, 2026·PMID 41615687
Why it mattersCurrent roadside impairment tests are subjective and prone to bias, with high false-positive rates. An objective neuroimaging tool like fNIRS could improve detection of cannabis-related impairment, potentially enhancing safety assessments in clinical, occupational, and legal settings.
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