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Psychopharmacology (from Greek ψῡχή, psȳkhē, "breath, life, soul"; wiktionary:φάρμακον, pharmakon, ...

Psychopharmacology (from Greek ψῡχή, psȳkhē, "breath, life, soul"; wiktionary:φάρμακον, pharmakon, "drug"; and -λογία, -logia) is the study of drug-induced changes in mood, sensation, thinking, and behavior. The field of psychopharmacology studies a wide range of substances with various types of psychoactive properties. The professional and commercial fields of pharmacology and psychopharmacology do not mainly focus on psychedelic or recreational drugs, as the majority of studies are conducted for the development, study, and use of drugs for the modification of behavior and the alleviation of symptoms, particularly in the treatment of mental disorders (psychiatric medication). While studies are conducted on all psychoactives by both fields, psychopharmacology focuses primarily on the psychoactive and chemical interactions with the brain. Psychoactive drugs may originate from natural sources such as plants and animals, or from artificial sources such as chemical synthesis in the laboratory. These drugs interact with particular target sites or receptors found in the nervous system to induce widespread changes in physiological or psychological functions. The specific interaction