Title: Associative Learning, Memory, and Neuromodulation in Hermissenda
Abstract: This chapter discusses the role of motivation in learning and memory. Motivation and rewards may influence learning through the action of neuromodulators. Recent physiological studies have identified a number of neuromodulators in the central nervous system whose actions produce profound effects on the electrical excitability of target neurons. The effects of neuromodulation may depend on the activity in target cells, and because the changes in the excitability of target cells are long lasting, modulators provide for both a primary role in associative processes and the possibility of enhancing an associative change produced by the action of another neurotransmitter. The secondary effects of neuromodulation, on the other hand, can be expressed by corelease of a neuromodulator and classical neurotransmitter or by extrinsic input from another neural pathway. The chapter reviews the role for a neuromodulator in associative learning of the marine mollusk Hermissenda and describes the organization of the central pathways mediating the conditioning in Hermissenda and the behavior that is modified by conditioning.
Publication Year: 1989
Publication Date: 1989-01-01
Language: en
Type: book-chapter
Indexed In: ['crossref']
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Cited By Count: 2
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