Abstract：
:Recent neurophysiological studies reveal that neurons in certain brain structures carry specific signals about past and future rewards. Dopamine neurons display a short-latency, phasic reward signal indicating the difference between actual and predicted rewards. The signal is useful for enhancing neuronal processing and learning behavioral reactions. It is distinctly different from dopamine's tonic enabling of numerous behavioral processes. Neurons in the striatum, frontal cortex, and amygdala also process reward information but provide more differentiated information for identifying and anticipating rewards and organizing goal-directed behavior. The different reward signals have complementary functions, and the optimal use of rewards in voluntary behavior would benefit from interactions between the signals. Addictive psychostimulant drugs may exert their action by amplifying the dopamine reward signal.
journal_name
Neuronjournal_title
Neuronauthors
Schultz Wdoi
10.1016/s0896-6273(02)00967-4subject
Has Abstractpub_date
2002-10-10 00:00:00pages
241-63issue
2eissn
0896-6273issn
1097-4199pii
S0896627302009674journal_volume
36pub_type
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