リスク下での意思決定における損失回避の神経基礎
Sabrina M Tom1, Craig R Fox, Christopher Trepel
1Department of Psychology, University of California Los Angeles (UCLA), Franz Hall, Box 951563, Los Angeles, CA 90095-1563, USA.
Science (New York, N.Y.)
|January 27, 2007
まとめ
個人は,利益よりも経済的損失に対して,より敏感です. この研究では,潜在的な利益と損失のための明確な脳活動パターンが発見され,神経の違いは行動的損失嫌悪を予測しました.
科学分野:
- 神経経済学 神経経済学とは
- 意思決定神経科学とは
- 行動経済学は,行動経済学である.
背景:
- 人間は,損失を避けることを好み,それに相当する利益を得るよりも,損失を避けることを好むという偏見である損失嫌悪を示す.
- 損失回避のニューラル基盤を理解することは,意思決定に関する研究にとって極めて重要です.
研究 の 目的:
- 財務的意思決定における損失回避のニューラル相関を調査する.
- 潜在的利益と損失に敏感な脳領域を特定する.
- 損失嫌悪感のニューラルおよび行動的な測定値の関係を調べる.
主な方法:
- 機能性磁気共鳴画像 (fMRI) は,脳の活動を監視するために使用されました.
- 参加者は,金銭的利益または損失の50/50の確率でギャンブルを受け入れるか否かを決定しました.
- 行動的喪失嫌悪における個々の差異が評価されました.
主要な成果:
- 中脳ドーパミナージック領域を含む脳領域は,潜在的利益の増加とともに活動が増加したことを示した.
- 潜在的損失に直面したとき,これらの同じ地域では活動が減少しました.
- ベントラル・ストライアタムとプレフロントアル皮質の神経活動は,行動的喪失嫌悪における個々の違いを予測した.
結論:
- 明確な神経メカニズムは,潜在的な利益と損失の処理を区別する.
- 主要な脳の領域における損失嫌悪性の神経測定は,個々の意思決定バイアスと相関しています.
- 研究結果は,経済意思決定のニューラル基盤の理解に貢献します.
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