鼠和人类可以最佳地积累证据进行决策
Bingni W Brunton1, Matthew M Botvinick, Carlos D Brody
1Princeton Neuroscience Institute, Princeton University, Princeton, NJ 08544, USA.
概括
决策中的噪音源于感官证据,而不是记忆. 我们的新任务和模型揭示了蓄积器的存在.
科学领域:
- 认知神经科学是一种认知神经科学.
- 计算神经科学是一种计算神经科学.
- 决策研究 决策研究
背景情况:
- 决策涉及积累证据,通常与噪音导致错误.
- 在这个过程中,噪音的确切来源仍然未被确定.
研究的目的:
- 在决策过程中的证据积累中确定噪声的来源.
- 区分传感输入和内部记忆过程中的噪声.
主要方法:
- 开发了新的决策任务,随机定时感官证据脉冲.
- 利用计算模型分析试验对试验的脉冲时间.
- 记忆中的量化噪音与单独的感官证据.
主要成果:
- 研究人员发现,在老鼠和人类中,蓄电器的记忆是无声的.
- 变化主要源于增加新的感官证据.
- 这种新的任务和建模方法成功地隔离了噪声源.
结论:
- 在这个决策模型中,感官证据,而不是记忆,是噪音的主要来源.
- 开发的方法提供了一种可靠的方式来调查内部决策机制.
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