Researeh On The Mechanism Of High-risk Decision Making

Decision Neuroscience is A new subject on the basis of scientific research in thetraditional behavior of decision-making。 The subjects tried to neuroscience imagingtechniques, combined with the new progress of cognitive science, psychology, decisionscience, to study the brain processing mechanisms of decision-making behind the behavior.Through the interpretation of the decision-making process in the brain, to understand theneural mechanisms of decision-making processing at the neuroscience level to provideempirical evidence, and thus to improve the decision-making model theory and normativebasis.Risk decision-making is an important and complex cognitive processing in human sociallife。It is an important theme of the decision-making scientific research in behavioraldecision-making, researchers from the level of risk behavior, risk behavior and tendencies,and explore the psychological mechanisms of risk decision-making behavior. In the field ofdecision neuroscience, the study of interaction between individuals in the individualdecision-making mechanism an，d social environment; which individual decision-makingmechanism, the most important areas of risk in decision-making.In this study, we use the FMRI to explore the cognition neural mechanisms of high-riskdecision-making.And use the Event-related design,, make the high-risk decision-makingdivided into stages of decision-making choices and the results of feedback. Adaptation ofWheel of Fortune in experiment, using20%:80%of high-risk probability, the selected fromthe4500/1125,3600/9002700/6751800/450. They were asked to be tried win as much aspossible of winning.12college students part in study, and11participants’ data in thehigh-risk decision-making were take for analysis.The brain areas activated by the high-risk findings:(1) the right side of the postcentralgyrus, lingual gyrus, right cingulate, a brain Island, right prefrontal and right inferior frontalgyrus, brain regions.(2) the feedback of high-risk decision-making stage, activated the leftmedial prefrontal cortex, left corner of the back, left parahippocampal gyrus, left middletemporal gyrus.(3) in high-risk decisions minus the processing of high-risk feedback, found that brain regions activated for the lower left pillow back, right cingulate, left inferior parietallobule.(4) in the brain areas activated by the high-risk decisions, the right postcentral gyrusand left prefrontal cortex was significantly the right insula and the left side of the prefrontalThe findings of this study show that:（1） high-risk decision-making at all stages of thedifferent brain activation.（2） high-risk decision-making including two cognitive decisionsystem, risk cognition system,such as the medial prefrontal, cingulate gyrus, postcentralgyrus,is related to risk information perceiving and processing; and survival needs system,such as the insula, cingulate gyrus, angular gyrus, may represent human instinct in the risk.