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. Author manuscript; available in PMC: 2011 Feb 1.
Published in final edited form as: Brain Cogn. 2009 Nov 26;72(1):146. doi: 10.1016/j.bandc.2009.10.013

Figure 1.

Figure 1

Dopamine Synthesis Pathway: Dopamine’s synthesis pathway begins with the amino acid tyrosine and is regulated by the activity of tyrosine hydroyxylase. As indicated in the figure, dopamine in neural synapses is regulated by monoamine oxydase (MAO) and catechol-O-methyltransferase (COMT) activity.