University of Rochester neuroscientists are currently seeking participants, ages 18-65, with schizophrenia, bipolar disorder or no psychiatric history, for a study using EEG to examine visual perception. Eligible participants will complete 2-3 study sessions, each lasting around 2-3 hours. Participants are paid $30 per hour, and are reimbursed for each study session they complete. Study sessions will occur at the University of Rochester Center for Advanced Brain Imaging and Neurophysiology (CABIN), located at 430 Elmwood Avenue. We will provide reimbursements for transportation (if it is needed).