Dopamine and social cooperation
Dopamine and social cooperation
Dopamine and social cooperation describes how, in humans, dopamine-innervated brain areas or cell body regions are activated during cooperative social interactions, suggesting that social stimuli may be primary incentive stimuli. Lactating female rats lever press for access to their pups, nucleus accumbens dopamine is released during maternal behavior, and accumbens dopamine lesions decrease maternal behavior, implicating incentive learning in maternal care. Adult male Syrian hamsters learn a preference for a place associated with a female scent that increases nucleus accumbens dopamine and a dopamine receptor antagonist blocks the learning implicating dopamine in incentive learning in sexually mature males. In songbirds, striatal dopamine release is associated with directed song used to attract a mate; dopamine may influence the incentive value of the mate. Dopamine is linked to social behavior in reptiles, amphibians, fish, and insects. Dopamine-mediated incentive learning may contribute to the organization of socially cooperative behavior in many species.
Keywords: cooperation, dopamine, Syrian hamster, incentive learning, maternal behavior, nucleus accumbens, social interaction, songbird, reward
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