This introductory video provides you with the basic concepts of the central nervous system pharmacology along with the types of CNS drugs including antipsychotics, antidepressants, anxiolytics/sedatives, and general anesthetics. A brief summary of Parkinson's disease is included in the end. Timeline: 0:00 Continuum of CNS Excitability 1:54 Antipsychotics 3:44 Antidepressants 6:04 Anxiolytics / Sedatives (Benzodiazepines AND Barbiturates) 6:20 Benzodiazepines 7:59 Barbiturates 9:05 General Anesthetics 10:16 Parkinson’s Disease