知覚的意思決定におけるドーパミン作動性計算
Samuel Liebana1, Matthias Fritsche1, Armin Lak1
1Department of Physiology, Anatomy & Genetics, University of Oxford, Oxford, United Kingdom.
Current opinion in behavioral sciences
|December 19, 2025
まとめ
ドーパミンシグナルは、価値ベースおよび知覚的意思決定の両方にとって重要である。強化学習モデルはドーパミンを説明するのに役立つ
科学分野:
- 神経科学; 認知科学; 計算神経科学
背景:
- ドーパミンシグナルは、価値ベースの意思決定において広範に研究されている。
- 最近の研究では、フィードバックと知覚的信頼性の影響を受ける知覚的意思決定におけるドーパミンの役割が明らかになっている。
- 知覚におけるドーパミンの機能を理解することは、学習と意思決定を理解するための鍵である。
研究 の 目的:
- 知覚的意思決定タスクにおけるドーパミンシグナルに関する最近の研究をレビューする。
- 知覚学習におけるドーパミンの役割を説明するために強化学習モデルをどのように利用できるかを検討する。
- 価値ベースおよび知覚的意思決定におけるドーパミン研究のギャップを埋める。
主な方法:
- 種を超えた知覚的意思決定におけるドーパミンシグナル伝達に関する既存の文献のレビュー。
- 知覚的意思決定タスクに適用される強化学習モデルの分析。
- 学習に関与するドーパミン作動性回路の議論。
主要な成果:
- ドーパミンシグナルは知覚的意思決定に浸透しており、フィードバックと感覚統計に依存する。
- 強化学習モデルは、知覚タスクにおける学習ダイナミクスとドーパミン作動性関与をうまく説明できる。
- 不均一なドーパミン応答は、統一されたフレームワーク内で説明できる。
結論:
- 強化学習は、知覚的意思決定と学習におけるドーパミンの役割を理解するための有望なフレームワークを提供する。
- このフレームワークは、異なる意思決定パラダイムとドーパミン応答パターンを横断する発見を統一するのに役立つ。
- 将来の研究では、初心者から専門家のパフォーマンスまでのドーパミンの機能を解明するために、RLを活用できる。
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