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Other: Electroretinography Other: Contrast sensitivity test during Electroencephalography

Stimuli are black and white grids, having different range of spatial frequencies, presented with different contrasts on a grey background thanks to a computer monitor, in a dark room. Participants are requested to maintain central fixation. During the test patients stay sit, head hold by chin strap. A pause can be asked by participant and done at every moment. This test lasts approximately 30 minutes.

Other: Visual simultaneity test during Electroencephalography

Two vertical bars are showed on a monitor, on the link and right of point of central fixation. Bars appear simultaneously or with a 10 to 200 ms asynchrony. Participants must determine whether stimuli are simultaneous or asynchronous and answer pressing the link button for simultaneity or right button for asynchrony. During the test patients stay sit, head hold by chin strap. A pause can be asked by participant and done at every moment. This test lasts approximately 30 minutes.

Other: Face perception test during Electroencephalography

Faces filtered in different spatial frequence ranges are showed randomly on a monitor, in a dark room. Participants must maintain a central fixation thank to a fixation cross. During the test patients stay sit, head hold by chin strap. A pause can be asked by participant and done at every moment. This test lasts approximately 30 minutes.

Other: CAST (cannabis abuse screening test) Other: Delayed Matching to Sample (DMS) test Other: Spatial Working Memory (SWM) test Other: Rapid Visual Information Processing (RVP) test Other: Test for attentional performance (TAP) / Divided Attention Other: Collection of saliva sample

In case of specific consent of participant to ancillary study, for ancillary study