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entity go
that which is perceived or known or inferred to have its own distinct existence (living or nonliving)

abstraction, abstract entity go
a general concept formed by extracting common features from specific examples

psychological feature go
a feature of the mental life of a living organism

event go
something that happens at a given place and time

act, deed, human action, human activity go
something that people do or cause to happen

activity go
any specific behavior

process, procedure go
a particular course of action intended to achieve a result

medical procedure go
a procedure employed by medical or dental practitioners

operation, surgery, surgical operation, surgical procedure, surgical process go
a medical procedure involving an incision with instruments

brain surgery go
any surgical procedure involving the brain

psychosurgery
brain surgery on human patients intended to relieve severe and otherwise intractable mental or behavioral problems

noun.act

3 Subcategories

amygdalotomy go
psychosurgery in which amygdaloid fibers that mediate limbic system activity are severed (in cases of extreme uncontrollable violence)
callosotomy, callosectomy go
severing the corpus callosum so that communication between the cerebral hemispheres is interrupted (in cases of severe intractable epilepsy)
lobotomy, leukotomy, leucotomy, prefrontal lobotomy, prefrontal leukotomy, prefrontal leucotomy, frontal lobotomy go
surgical interruption of nerve tracts to and from the frontal lobe of the brain