nucleus accumbens

one of the largest of the septal nuclei (see septal area), which receives dopaminergic innervation from the ventral tegmental area. Dopamine release in this region may mediate the reinforcing qualities of many activities, including drug abuse.

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Psychology term of the day

December 18th 2024

tonic contraction

the sustained contraction of different groups of fibers within a muscle to maintain continual muscular tension (tonus).