/suy'koh serr"jeuh ree/, n.treatment of mental disorders by means of brain surgery. Cf. lobotomy.[1935-40; PSYCHO- + SURGERY]
* * *The first such technique was the prefrontal lobotomy. Fairly common from the 1930s through the 1950s, lobotomy reduced neurotic symptoms such as agitation and aggressiveness but also left patients apathetic and with a limited range of emotions; it has since been largely replaced by the use of tranquilizing and antipsychotic drugs (see psychopharmacology). A form of psychosurgery developed more recently involves the placement of tiny lesions in specific areas of the brain and has little effect on intellectual function or quality of life; it has been used to treat obsessive-compulsive disorder and occasionally cases of severe psychosis.
* * *▪ medicineThe first such technique was developed by a Portuguese neurologist, António Egas Moniz (Egas Moniz, António), and was first performed by his colleague, Almeida Lima, in 1935. The procedure, called lobotomy or prefrontal leukotomy, was based on experimental studies demonstrating that certain mental symptoms induced in chimpanzees could be modified by cutting brain fibres. Moniz's original procedure consisted of cutting two openings in the skull, one on each side above the temple, and then severing the nerve fibres connecting the thalamus with the frontal lobes of the brain. Lobotomies are no longer performed.Psychosurgery that involves much less extensive areas of the brain has come to be generally regarded as a radical procedure to be followed only after all other forms of treatment have proved ineffective and the patient remains severely distressed or tormented by illness; since the introduction of antipsychotic medications and tranquilizing agents, the condition of only a very few patients has warranted such a drastic measure. In the 1930s, '40s, and '50s psychosurgery was performed on patients who showed chronic agitation and severe distress, aggressiveness, impulsivity, violence, and self-destructive behaviour. Patients frequently exhibited a reduction of such symptoms after the surgery, but they also exhibited reduced drive and initiative, increased apathy, and, in general, reduction in the depth and intensity of their emotional response to life. Radical psychosurgery of this type is almost never used now because of these undesirable effects.Psychosurgery that involves the placement of tiny lesions in specific areas of the brain and that has virtually no effect on intellectual function or the so-called quality of life has also been developed. These techniques are used in cases of obsessive-compulsive (obsessive-compulsive disorder) behaviour and occasionally in cases of severe psychosis. This form of neurosurgery is also used in the management of chronic pain, such as that caused by damage to the nervous system (nervous system, human) or that associated with terminal cancer.
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psychosurgery — [sī΄kō sʉr′jər ē] n. brain surgery performed in treating chronic mental disorder … English World dictionary
Psychosurgery — For the Tourniquet album, refer to Psycho Surgery. Psychosurgery is a subset of neurosurgery (surgery of the brain) intended to modulate the performance of the brain, and thus effect changes in cognition, with the intent to treat or alleviate… … Wikipedia
Psychosurgery — The modern history of operating on the brain to relieve mental illness begins with Swiss psychiatrist Gottlieb Burckhardt (1836–1907), who in 1882 became director of the private Préfargier Clinic in Marin, near Neuchâtel. Starting in December… … Historical dictionary of Psychiatry
psychosurgery — n. surgery on the brain to relieve psychological symptoms. The procedure is irreversible and is therefore reserved for the most severe and intractable of symptoms, particularly severe chronic anxiety, depression, and untreatable pain. Side… … The new mediacal dictionary
psychosurgery — noun Date: 1936 cerebral surgery employed in treating psychic symptoms • psychosurgeon noun • psychosurgical adjective … New Collegiate Dictionary
psychosurgery — noun Surgery of the brain to treat or alleviate mental illness … Wiktionary
psychosurgery — The treatment of mental disorders by operation upon the brain, e.g., lobotomy. * * * psy·cho·sur·gery sərj (ə )rē n, pl ger·ies cerebral surgery employed in treating psychic symptoms psy·cho·sur·gi·cal sər ji kəl adj … Medical dictionary
psychosurgery — n. brain surgery designed to treat mental illnesses saÉªkÉ™ÊŠ sÉœrdÊ’É™rÉª / sÉœËd … English contemporary dictionary
psychosurgery — noun brain surgery, such as leucotomy, used to treat severe mental disorder. Derivatives psychosurgical adjective … English new terms dictionary
psychosurgery — psy·cho·surgery … English syllables