Altered cerebellar-cortical resting-state functional connectivity in cannabis users

Area of Science:

• Neuroscience
• Neuroimaging
• Cannabis Research

Background:

• Cannabis use is linked to motor and cognitive impairments.
• The cerebellum, rich in cannabinoid receptors, may mediate these effects.
• Altered cerebellar-brain region signaling is a potential mechanism.

Purpose of the Study:

• To investigate alterations in cerebellar-cortical resting-state functional connectivity (rsFC) in cannabis users.
• To determine if rsFC differences correlate with cannabis use characteristics.

Main Methods:

• Resting-state functional connectivity (rsFC) was calculated between cerebellar lobules and cerebral regions.
• The study included 41 regular cannabis users and 31 healthy non-users.
• Associations with age of initiation and lifetime use were examined.

Main Results:

• Cannabis users showed increased connectivity between anterior cerebellum and posterior cingulate cortex.
• Users exhibited decreased connectivity between other cerebellar regions and the cortex.
• No significant associations were found between rsFC and cannabis use features.

Conclusions:

• Cannabis use is associated with altered cerebellar-to-cerebral cortex connectivity.
• These connectivity changes may influence behavior and cognition.