Learning: Principles and Applications by Stephen B. Klein

Author:Stephen B. Klein
Language: eng
Format: epub
Publisher: SAGE Publications
Published: 2018-02-06T05:00:00+00:00

Mesolimbic Reinforcement System

In the late 1980s, Wise and Rompre (1989) concluded that the medial forebrain bundle is only part of the brain’s reinforcement system. Wise and Rompre suggested that the mesolimbic reinforcement system contains two neural pathways. One is the tegmentostriatal pathway, which begins in the lateral and preoptic areas of the hypothalamus (see Figures 9.11 and 9.12). Neurons in these areas of the hypothalamus detect reinforcement-related stimuli (e.g., food or stimuli associated with food) and transmit the information through the MFB to the ventral tegmental area (VTA). Neural impulses from the VTA then move to the nucleus accumbens (NA), septum, and prefrontal cortex, the brain area that plans the response to reinforcement-related stimuli. The second pathway is the nigrostriatal pathway (see again Figures 9.11 and 9.12). This pathway begins in the substantia nigra and projects to the basal ganglia (the caudate nucleus and putamen).

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