hypothalamotomy

hy·po·thal·a·mot·o·my .hī-pō-.thal-ə-'mät-ə-mē n, pl -mies psychosurgery in which lesions are made in the hypothalamus by a knife, ultrasonic energy, radiation, or electricity

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hy·po·thal·a·mot·o·my (hi″po-thal″ə-motґə-me) [hypothalamus + -tomy] production of lesions in the posterolateral part of the hypothalamus; performed in the treatment of psychotic disorders.