Neuroeconomics.ppt

Decisions Exp. 3 Results What is Neuroeconomics Targeted questions: human decision making To bet or not to bet? The ERN associated with risk taking choices 错误相关负波（ERN） 相关于正确反应，错误反应所引起的一个更负的ERP波 反应锁定 (ERP time-locked to response), 以反应执行点为零点 ERN大致出现于错误反应发生之时 由大脑前扣带回（ACC）活动产生 Procedure Data analysis results 15 Subjects, 500 trials Frequency of risky choices Reaction times 8 (Previous results)*4 (Current choice) 决策过程与结果评价 首次证明，脑电中错误相关负波(ERN)跟错误没有关系；错误觉察理论不可能是一个有关ERN的一般性理论 指出了产生ERN的大脑前扣带回（ACC）在风险决策中的作用:预警 * * * * * The scalp topography of the difference wave between ERP responses to feedback faces following incorrect vs. and correct judgment in the 250-500 ms time window. b) The scalp topography of the difference wave between ERP responses to attractive vs. unattractive feedback faces in the 250-500 ms time window. c) The scalp topography of the difference wave between ERP responses to feedback faces following incorrect vs. and correct judgment in the 300-380 ms time window after EEG signals were filtered with 2-20 Hz bandpass. Zhou Zhou, in revision Action vs. inaction Zhou Zhou, in revision Action vs. inaction 人对公平的感受 “不患寡而患不均” 行为实验 最后通牒博弈（Ultimatum Game） 在传统“得钱”的基础上加上“赔钱”条件（±￥10） 被试为反应者（responder） 提议者 反应者 接受 拒绝 0:0 Gain and loss ultimatums: fMRI 2*5 Frame: gain / loss Fairness Level: 1:9 2:8 3:7 4:6 5:5 extreme unfair modestly unfair middle modestly fair fair Gain (+￥10) 你　1 他　9 你　2 他　8 你　3 他　7 你　4 他　6 你　5 他　5 Loss (-￥10) 你　-9 他　-1 你　-8 他　-2 你　-7 他　-3 你　-6 他　-4 你　-5 他　-5 Trials 14 14 14 14 14 * Procedure 70*18s *2 runs + break = 45min * Behaivoral results * less fair, more activation * More fair, more activation * Correlation * Neuroeconomics infancy * * * * * * * * * * * * * * * * * * * * Interdisciplinary area Economics Psychology Neuroscience Tasks models Cognition Neural substrates II. When economics meets the brain In the last decade of last