prefrontal lobotomy

n.
A lobotomy in which the white fibers that connect the thalamus to the prefrontal and frontal lobes of the brain are severed, formerly performed as a treatment for extremely violent behavior.

n.

A lobotomy in which the white fibers that connect the thalamus to the prefrontal and frontal lobes of the brain are severed, performed as a treatment for intense anxiety or violent behavior.

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The noun has one meaning:

Meaning #1: surgical interruption of nerve tracts to and from the frontal lobe of the brain; often results in marked cognitive and personality changes
  Synonyms: lobotomy, leukotomy, leucotomy, prefrontal leukotomy, prefrontal leucotomy

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