The Neuroeconomics of Simple and Complex Choice
神经经济学研究大脑如何做决策，整合神经科学、心理学、经济学和计算机科学。简单选择中大脑计算并比较价值信号，通过强化学习更新；复杂选择涉及额外神经回路和前额叶皮层的高级处理。
Neuroeconomics investigates how the brain makes decisions. The field integrates insights from neuroscience, psychology, economics, and computer science. In simple choices, such as selecting between an apple and a pear, the brain computes and compares value signals for each option. After each choice, the value signals are updated according to the experienced outcome by reinforcement learning. The brain structures involved in choices include different areas of the frontal and parietal cortex, striatum, and amygdala, whereas the value updating involves the reward prediction error signal of dopamine neurons. Complex choices involve interaction among choice options and engage additional neural circuits and computations. While some mechanisms from simple choice are preserved, complex decisions require higher-order processing in the prefrontal cortex. Thus, neuroeconomics aims to build a unified, biologically grounded model of both simple and complex decision-making.