ArticleJournal of psychopharmacology (Oxford, England)2024
Chronic Cannabis users exhibit altered oscillatory dynamics and functional connectivity serving visuospatial processing.
Article in Journal of psychopharmacology (Oxford, England), 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed.
- Problematic patterns of social media use increase with spontaneous cortical activity and transdiagnostic mental health symptoms in youth.Developmental cognitive neuroscience · 2026Article
- Regular cannabis use modulates gamma functional connectivity with V1 during visual processing.NeuroImage · 2025Article
- Altered Functional Connectivity Dynamics Serving Cognitive Flexibility in Regular Cannabis Users.Addiction biology · 2025Article
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Authors and funding
9 authors.
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Abstract
backgroundCannabis is the most widely used psychoactive drug in the United States. While multiple studies have associated acute cannabis consumption with alterations in cognitive function (e.g., visual and spatial attention), far less is known regarding the effects of chronic consumption on the neural dynamics supporting these cognitive functions.
methodsWe used magnetoencephalography (MEG) and an established visuospatial processing task to elicit multi-spectral neuronal responses in 44 regular cannabis users and 53 demographically matched non-user controls. To examine the effects of chronic cannabis use on the oscillatory dynamics underlying visuospatial processing, neural responses were imaged using a time-frequency resolved beamformer and compared across groups.
resultsNeuronal oscillations serving visuospatial processing were identified in the theta (4-8 Hz), alpha (8-14 Hz), and gamma range (56-76 Hz), and these were imaged and examined for group differences. Our key results indicated that users exhibited weaker theta oscillations in occipital and cerebellar regions and weaker gamma responses in the left temporal cortices compared to non-users. Lastly, alpha oscillations did not differ, but alpha connectivity among higher-order attention areas was weaker in cannabis users relative to non-users and correlated with performance.
conclusionsOverall, these results suggest that chronic cannabis users have alterations in the oscillatory dynamics and neural connectivity serving visuospatial attention. Such alterations were observed across multiple cortical areas critical for higher-order processing and may reflect compensatory activity and/or the initial emergence of aberrant dynamics. Future work is needed to fully understand the implications of altered multispectral oscillations and neural connectivity in cannabis users.
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