Abstract
Intraperitoneal administration of 5-hydroxytryptophan (5-HTP) induced a special form of gnawing behaviour and stereotyped movements of the head and forelegs when given to iproniazid-pretreated rats. These effects have not been described previously. Implantation of 5-HT into the rostro-ventral part of the corpus striatum, induced only gnawing behaviour, while only tremor
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