hypothalamus dopamine amount caripark Trait.ontology 2019-10-30T15:08:44Z VT:0010868 The proportion, quantity or volume in the hypothalamus (the ventral part of the diencephalon, which forms the floor and lateral wall of the third ventricle) of this catecholamine neurotransmitter, derived from tyrosine and the precursor to norepinephrine and epinephrine. CMO:0003106 brain dopamine amount