Evidence for a GABAergic inhibitory influence on serotonergic neurons originating from the dorsal raphe.


Systemic administration of progabide, dipropylacetamide and gamma-acetylenic-GABA diminished striatal 5-HTP accumulation; the effect of progabide was abolished after hemitransection. Intradorsal raphé (but not intrastriatal) infusion of GABA or GABA agonist agents reduced striatal 5-HTP accumulation. Infusion of picrotoxinin or bicuculline into the dorsal… (More)


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