VRT as a Biomarker of Cerebellar Dysfunction in Chronic Cannabis Use

We will measure performance of the subjects of each group on the visuomotor adaptation task, especially in the rotation condition, in which a perturbation will be induced between the anticipated location of the hand and the provided visual feedback, and in the washout condition, in which the rotation will be removed. We expect that subjects with cannabis use disorder will not show the expected implicit motor adaptation to the perturbation and consequently no deterioration of performance on the task, due to cannabis-induced cerebellar damage. In other words, we want to show that this visuomotor task is a cheap and quick biomarker of cerebellar dysfunction in chronic cannabis users.