ネズミと人間は,意思決定のための証拠を最適に蓄積することができます
Bingni W Brunton1, Matthew M Botvinick, Carlos D Brody
1Princeton Neuroscience Institute, Princeton University, Princeton, NJ 08544, USA.
まとめ
意思決定におけるノイズは,記憶ではなく,感覚的証拠から発生します. 私たちの新しいタスクとモデルは,蓄積器がそれを明らかにしています.
科学分野:
- 認知神経科学は,認知神経科学である.
- 計算神経科学とは
- 意思決定 研究 意思決定
背景:
- 意思決定には,証拠の蓄積が関与し,多くの場合,ノイズがエラーを引き起こす.
- この過程における正確な騒音源は,未だに特定されていない.
研究 の 目的:
- 意思決定中の証拠の蓄積で騒音の起源を正確に特定する.
- 感覚入力と内部メモリプロセスのノイズを区別する.
主な方法:
- ランダムにタイミング化された感覚証拠パルスによる新しい意思決定タスクを開発しました.
- 試行ごとにパルスタイミングを分析する計算モデルを使用した.
- 記憶における量化されたノイズと,感覚的証拠を別々に比較する.
主要な成果:
- 蓄積器の記憶は,ラットとヒトの両方に無音であることが判明しました.
- 変動は,主に新しい感覚的証拠の追加から生じた.
- この新しいタスクとモデリングアプローチは,ノイズ源を成功裏に隔離しました.
結論:
- 記憶ではなく,感覚的証拠が,この意思決定モデルにおけるノイズの主な源である.
- 開発された方法論は,内部意思決定メカニズムを調査するための堅実な方法を提供します.
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