Gregory D. Horwitz is in the Vision Center Laboratory and Edward M. Callaway is in the Systems Neurobiology Laboratories at the Salk Institute for Biological Studies, La Jolla, California 92037, USA. horwitz@salk.edu
Monkeys and humans work harder for immediate than for distant rewards. How are associations between reward immediacy and sensory stimuli established in the brain? A recent study suggests a crucial role for dopamine-mediated activity in the rhinal cortex.
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