Cerebellar Alterations in Individuals With a Cannabis Use Disorder

Participant moves a cursor on a screen by sliding a pen over a digital tablet. Participants perform a center-out movement, aiming to a target that appears over one of a set of eight markers radially distributed. In several block of trials, the mapping of the pen position to the cursor is rotated.

Participant is provided with an explicit instruction as to how counteract the effects of the visuo-motor rotation via aiming to a marker adjacent target