前頭目の領域と上部のコリキュルスの剥離が眼の動きに与える影響
Science (New York, N.Y.)
|November 2, 1979
まとめ
サッカディック・アイ・ムーブメント・コントロールは,2つの主要な神経経路に依存する:正面の眼球領域と上部のコリキュルス. 両方の経路を遮断すると,コントロールが完全に失われ,一方1つの経路を遮断すると,軽微な欠陥が生じます.
科学分野:
- 神経科学は神経科学である.
- オフタルモロジック (眼科)
- システム神経科学 システム神経科学
背景:
- サッカディックな眼の動きは,視覚的知覚と探索に不可欠です.
- 2つの主要な神経経路,前頭眼場 (FEF) と上側コリキュル (SC) は,サッカディック制御を媒介することが知られている.
- これらの経路の正確な貢献と相互作用は,依然として活発な研究分野です.
研究 の 目的:
- サッカディック眼運動制御における前頭眼球と上頭眼球の機能的役割を調査する.
- 1つまたは2つの経路を妨害することでサッカディック行動に及ぼす影響を判断する.
主な方法:
- この研究は,動物モデルでの特定の神経経路の損傷または無効化,または標的型脳損傷を有するヒト患者のデータを分析することを含む可能性があります.
- 行動テストは,サッカディックな目の動きの精度と速度を定量化するために使用されました.
主要な成果:
- 前頭視野または上部コリキュルス経路の障害は,サッカディック制御の微妙な欠陥のみをもたらしました.
- 両方の経路が同時に破壊されたとき,サッカディック眼球運動制御の完全な喪失が観察されました.
結論:
- 正面の眼球領域と上部のコリキュルス経路は,両眼のサッカディック・ムーブメント・コントロールの維持に不可欠である.
- これらの経路は,機能的な冗長性を示し,重要な赤字は,組合せされた破壊によってのみ発生します.
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