| Budget Amount *help |
¥17,290,000 (Direct Cost: ¥13,300,000、Indirect Cost: ¥3,990,000)
Fiscal Year 2017: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2016: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2015: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2014: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2013: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
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| Outline of Final Research Achievements |
Neuroeconomical studies were performed using newly hatched domestic chicks. We have so far found that competition makes chicks impulsive. In this study, by focusing on basal ganglia and amygdala-homologous area, we analyzed how the multiple values (such as amount, proximity, cost, risk and public information) could determines decisions. As the results, we found (1) competition suppresses the neural representation of reward by associated visual cues, (2) chicks pay more effort under competition (social facilitation), which was not mediated by reward system (dopaminergic neurons) but by emotion system (limbic amygdala), (3) risk meets competition to yield choice impulsiveness, and (4) competition leads to formation of publicly shared information about the food resource, thus giving rise to optimal foraging of the group.
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