模糊决策的认知神经机制

At present, many studies focus on the exploration of the cognitive and neural mechanism of risk decision making, and pay no attention to that of ambiguity decision making. However, in reality, what we are confronted with is decision making under ambiguity. Moreover, it still does not reach an agreement whether ambiguity decision making is a kind of special and complicated risk decision making or a kind of independent decision making. So far the cognitive and neural mechanism of ambiguity decision making is still a problem to be solved. Therefore, firstly, by IGT task and GDT task, this study applies the ERP techniques, biofeedback techniques and genetic techniques to explore the disassociation of ambiguity decision making and risk decision making among Internet Addiction participants and general population. Secondly, by IGT task and urn drawing task, this study applies ERP techniques and fMRI techniques to investigate the cognitive and neural mechanism of ambiguity decision making. Finally, this study validates the above results from developmental and clinical perspective. In general, the findings contribute to broaden the fields and sights of ambiguity decision making, and understand human beings' decision making under ambiguity and the relationship between ambiguity decision making and risk decision making. Besides, the findings can supply references for the cognitive diagnosis and treatment for the addicts in clinic and brain-impaired patients, and decision making among enterprises and individuals.

目前国内外很多研究都侧重于风险决策认知神经机制的探索；忽视了对模糊决策认知神经机制的关注，而现实中我们所面临的决策，更多的属于模糊情境下的决策。模糊决策是特殊的、复杂的风险决策，还是一种独立的决策类型，存在很多分歧；模糊决策的认知神经机制更是一个急待解决的问题。因此本研究拟应用事件相关电位技术、生物反馈技术和基因技术，采用IGT和GDT任务范式，通过网络成瘾人群和正常人群的对比研究，去探索模糊决策和风险决策之间的分离；应用事件相关电位技术和磁共振技术，采用IGT范式、选瓶任务范式和密封盒子范式，研究模糊决策的认知神经机制；并从发展和临床角度进一步验证上述结果。该项目的开展，有助于拓广模糊决策的研究领域和视野，对理解人类在模糊情境下的决策机制以及模糊决策和风险决策之间的关系，具有重要的理论意义；对临床上成瘾人群、脑损伤患者的认知治疗以及现实中企业和个人的决策，也具有重要的参考价值。

目前国内外很多研究都侧重于风险决策认知神经机制的探索；忽视了对模糊决策认知神经机制的关注，而现实中我们所面临的决策，更多的属于模糊情境下的决策。模糊决策是特殊的、复杂的风险决策，还是一种独立的决策类型，存在很多分歧；模糊决策的认知神经机制更是一个急待解决的问题。因此本研究拟采用行为实验，采用IGT和GDT任务范式，通过犯人和正常人群的对比研究，去探索模糊决策和风险决策之间的分离；应用眼动技术、事件相关电位技术和功能性核磁共振技术，采用IGT和GDT任务范式，研究模糊决策的认知神经机制。该项目的开展，有助于拓广模糊决策的研究领域和视野，对理解人类在模糊情境下的决策机制以及模糊决策和风险决策之间的关系，具有重要的理论意义；对临床上成瘾人群、脑损伤患者、犯人的认知康复训练以及现实中企业和个人的决策，也具有重要的参考价值。