it is suggested from these studies that ( 1 ) estrogen can directly effect the neurons in the preoptic area , ( 2 ) estrogen can act at the level of the membrane of the neuron , ( 3 ) dopamine , epinephrine and norepinephrine mainly regulate the estrogen-sensitive neuron suppressive , while acetylcholine excites it .
C0014563
epinephrine
C0028351
norepinephrine