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准确FOK判断与成功线索回忆的大脑活动相似性——来自fMRI的证据 被引量:5
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作者 罗劲 仁木和久 +1 位作者 应小萍 罗跃嘉 《自然科学进展》 北大核心 2003年第3期263-268,共6页
FOK(feeling-of-knowing)是指人们对于那些当时不能被成功地提取出来的回忆目标在主观上仍然可能有一种“我知道之感”。有人认为FOK的认知基础是对于回忆目标的部分信息的成功提取,采用事件相关功能性磁共振成像(fMRI)技术从脑科学的... FOK(feeling-of-knowing)是指人们对于那些当时不能被成功地提取出来的回忆目标在主观上仍然可能有一种“我知道之感”。有人认为FOK的认知基础是对于回忆目标的部分信息的成功提取,采用事件相关功能性磁共振成像(fMRI)技术从脑科学的角度探讨了这种理论的正确性,研究结果表明:相对于那些最后能被再认、但却不能被FOK判断事先准确预知的项目而言,那些能被FOK判断准确地预测其再认的项目与那些在线索回忆时就能够被成功地回忆起来的项目在大脑活动模式上基本相似,且这种活动模式与已知的、参与成功回忆的脑神经网络相吻合。这说明了准确的FOK预测过程与成功的线索回忆过程受同样的脑神经网络支持,从而为FOK的“部分信息提取假说”提供了来自于大脑的直接证据。 展开更多
关键词 FOK判断 线索回忆 大脑活动模式 相似性 事件相关功能性磁共振成像 信息提取 脑神经网络
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On brain activity mapping: Insights and lessons from Brain Decoding Project to map memory patterns in the hippocampus 被引量:1
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作者 TSIEN Joe Z. LI Meng +9 位作者 OSAN Remus CHEN GuiFen LIN LongNian WANG Phillip Lei FREY Sabine FREY Julietta ZHU DaJiang LIU TianMing ZHAO Fang KUANG Hui 《Science China(Life Sciences)》 SCIE CAS 2013年第9期767-779,共13页
The BRAIN project recently announced by the president Obama is the reflection of unrelenting human quest for cracking the brain code, the patterns of neuronal activity that define who we are and what we are. While the... The BRAIN project recently announced by the president Obama is the reflection of unrelenting human quest for cracking the brain code, the patterns of neuronal activity that define who we are and what we are. While the Brain Activity Mapping proposal has rightly emphasized on the need to develop new technologies for measuring every spike from every neuron, it might be helpful to consider both the theoretical and experimental aspects that would accelerate our search for the organizing principles of the brain code. Here we share several insights and lessons from the similar proposal, namely, Brain Decoding Project that we initiated since 2007. We provide a specific example in our initial mapping of real-time memory traces from one part of the memory circuit, namely, the CA1 region of the mouse hippocampus. We show how innovative behavioral tasks and appropriate mathematical analyses of large datasets can play equally, if not more, important roles in uncovering the specific-to-general feature-coding cell assembly mechanism by which episodic memory, semantic knowledge, and imagination are generated and organized. Our own experiences suggest that the bottleneck of the Brain Project is not only at merely developing additional new technologies, but also the lack of efficient avenues to disseminate cutting edge platforms and decoding expertise to neuroscience community. Therefore, we propose that in order to harness unique insights and extensive knowledge from various investigators working in diverse neuroscience subfields, ranging from perception and emotion to memory and social behaviors, the BRAIN project should create a set of International and National Brain Decoding Centers at which cutting-edge recording technologies and expertise on analyzing large datasets analyses can be made readily available to the entire community of neuroscientists who can apply and schedule to perform cutting-edge research. 展开更多
关键词 BRAIN project Brain Decoding Project brain activity map learning and memory episodic memory semantic knowledge IMAGINATION concepts fear conditioning earthquake experiences neural code
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