Neuronal stability in medial frontal cortex sets individual variability in decision-making

被引:0
|
作者
Tomoki Kurikawa
Tatsuya Haga
Takashi Handa
Rie Harukuni
Tomoki Fukai
机构
[1] RIKEN Center for Brain Science,Laboratory for Neural Coding and Brain Computing
[2] Research Center Caesar,Department of Behavior and Brain Organization
来源
Nature Neuroscience | 2018年 / 21卷
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摘要
In the brain, decision making is instantiated in dedicated neural circuits. However, there is considerable individual variability in decision-making behavior, particularly under uncertainty. The origins of decision variability within these conserved neural circuits are not known. Here we demonstrate in the rat medial frontal cortex (MFC) that individual variability is a consequence of altered stability in neuronal populations. In a sensory-guided choice task, rats trained on familiar stimuli were exposed to unfamiliar stimuli, resulting in variable choice responses across individuals. We created a recurrent network model to examine the source of variability in MFC neurons, and found that the landscape of neural population trajectories explained choice variability across different unfamiliar stimuli. We experimentally confirmed model predictions showing that trial-by-trial variability in neuronal activity indexes the landscape and predicts individual variation. These results show that neural stability is a critical component of the MFC neural dynamics that underpins individual variation in decision-making.
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页码:1764 / 1773
页数:9
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