40 Hz Visual Stimulation as an Intervention in Schizophrenia

40 Hz visual stimulation will be delivered at the same time of day over 5 consecutive days. Participants will lay down while wearing the customized sleep mask with inbuilt red LEDs flickering at 40 Hz linked to a microcontroller. Participants will be asked to keep their eyes closed and encouraged to fall asleep for the full stimulation duration of 60 minutes.