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Neuroreport:
doi: 10.1097/WNR.0b013e328330a883
Motivation, Emotion, Feeding, Drinking

Paralimbic system and striatum are involved in motivational behavior

Nishimura, Masahikoa b; Yoshii, Yoshihikoc; Watanabe, Jobud; Ishiuchi, Shogoa

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Abstract

Goal-directed rewarded behavior and goal-directed non-rewarded behavior are concerned with motivation. However, the neural substrates involved in goal-directed non-rewarded behaviors are unknown. Using functional magnetic resonance imaging, we investigated the brain activities of healthy individuals during a novel tool use (turning a screwdriver) to elucidate the relationship between the brain mechanism relevant to goal-directed non-rewarded behavior and motivation. We found that our designed behavioral task evoked activities in the orbitofrontal cortex, striatum, anterior insula, lateral prefrontal cortex, and anterior cingulate cortex compared with a meaningless task. These results suggest that activation in these cerebral regions play important roles in motivational behavior without tangible rewards.

© 2009 Lippincott Williams & Wilkins, Inc.

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