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人間の脳皮質にある色のセンターです
C J Lueck1, S Zeki, K J Friston
1MRC Cyclotron Unit, Hammersmith Hospital, London, UK.
Nature
|August 3, 1989
まとめ
研究者らは,ポジトロン放出トモグラフィー (PET) を使用して,ヒトの色の視覚のための特定の脳領域を特定しました. この研究は,マカク類の類人猿の発見に類似した,人間の特化した色の中心を確認しています.
科学分野:
- 神経科学は神経科学である.
- 視覚的知覚 視覚的知覚
- 認知神経科学とは
背景:
- 研究では,マカク猿の脳に色処理領域 (領域V4) を特定した.
- 初期の人類の色の中心に関する証拠は,関連する視覚的欠陥のため,決定的ではありませんでした.
- 人間の色彩センターの再調査は,マカクの視覚皮質の機能的専門化によって促されました.
研究 の 目的:
- 正常な人間の脳内の特殊な色処理センターの存在と位置を調査する.
- 先進的な神経イメージング技術を使用して,色刺激によって活性化された脳領域を特定します.
主な方法:
- ポジトロン放出トモグラフィー (PET) スキャンは,脳の血流量を測定するために使用されました.
- PETスキャンは,多色対黒と白の視覚ディスプレイを見る被験者の脳の活動を監視しました.
主要な成果:
- 正常な人間の脳皮質の特定の領域は,黒と白のディスプレイと比較して,多色のディスプレイを見るときに,活動が増加したことを示しました.
- この特定された領域は,色の視覚処理に特化しています.
結論:
- この研究は,色の視覚に特化したヒトの独特の皮質領域の証拠を提供します.
- PETのような神経イメージング技術は,人間の脳内の機能的専門性を効果的に局所化することができます.
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