Story perspectives

London fMRI Study Links Cannabis Use to Anticipation Differences

6/21/2026

Summary

Story summary

Researchers ran an fMRI study from 1 Nov 2017 to 16 Apr 2021 comparing anticipation in cannabis users and non-users.
The trial enrolled 140 Greater London participants aged 16-17 or 26-29, with users using cannabis >=1 day/week and controls <=10 lifetime uses.
With 96 participants, the study had 80 % power to detect an interaction effect of f = 0.14.
Sensitivity analyses kept users and imputed scores from session 2 for two participants and session 4 for one.

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Story summary

Researchers ran an fMRI study from 1 Nov 2017 to 16 Apr 2021 comparing anticipation in cannabis users and non-users.
The trial enrolled 140 Greater London participants aged 16-17 or 26-29, with users using cannabis >=1 day/week and controls <=10 lifetime uses.
With 96 participants, the study had 80 % power to detect an interaction effect of f = 0.14.
Sensitivity analyses kept users and imputed scores from session 2 for two participants and session 4 for one.