Cognition, Sleep, Neurophysiology of Suicidal Depressed Patients

evaluation whether suicidal major depressive disorder patients show a specific pattern of cognitive, sleep and neurophysiologic impairment as compared to non- suicidal major depressive disorder patient, and studying the correlation between the cognitive impairment, the sleep disturbance and the neurophysiologic impairment and suicidal behaviour Studying the cognitive profile in suicidal patient including studying, Comprehension, Attention, language production, reasoning, problem solving and decision making