Localization and synthesis of monoamines in regions of Limax CNS controlling feeding behavior.

Localization and synthesis of dopamine and serotonin in the cerebral and buccal ganglia of Limax maximus were studied. A combination of fluorescence histochemistry, immunocytochemistry, and microchemical analysis showed that both amines were localized to particular cell groups and fiber tracts within and between the two sets of ganglia. Since these ganglia control feeding behavior, which is readily modified by associative learning, these studies have direct bearing on analysis of both motor control and learning mechanisms.