Psychoactive drugs are chemical substances that alter mood, behavior, perception, or mental functioning. Throughout history, many cultures have found ways to alter consciousness through the ingestion of substances. In current professional practice, psychoactive substances known as psychotropic drugs have been developed to treat patients with severe mental illness. Psychoactive substances exert their effects by modifying biochemical or physiological processes in the brain. The message system of nerve cells, or neurons, relies on both electrical and …showed first 75 words of 545 total…

…showed last 75 words of 545 total…symptoms of schizophrenia, allowing many schizophrenic patients to leave the hospital and rejoin community life. Antidepressant drugs help the majority of patients with severe depression recover from their disorder. Lithium salts eliminate or diminish the episodes of mania and depression experienced by manic-depressive patients. ------- This essay was written for a summer school assignment to be glued onto a posterboard. It will act as a good supplement to a few pictures and various little facts.