Figure 1.
Symbolic representation of the DA neuroregulation. Selective groups of DA neurons (N1) project onto different forebrain regions (A, B, and C) that are assumed to have integrative and executive functions. Feedback does exist between these regions and DA neurons; moreover, the integrative regions communicate. The DA neurons are themselves modulated by other neurotransmitters N2 (such as serotonin) and by steroids.
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published 2000