人間の視力における人工的に誘発されたスコトマの感知的な埋め込み
V S Ramachandran1, R L Gregory
1Psychology Department 0109, University of California, San Diego, La Jolla 92092-0109.
Nature
|April 25, 1991
まとめ
視覚補充は,単に盲点を無視するのではなく,欠けている視覚場情報のニューラル表現を積極的に作成します. このプロセスは,幻想的な輪郭によって影響を受け,運動知覚に影響を及ぼします.
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
- 心理物理学 心理物理学とは
背景:
- 視野損傷 (スコトーマ) の患者は,欠けている視覚情報の"補充"を報告しています.
- 視覚補充のメカニズムを理解することは,視覚神経科学にとって極めて重要です.
研究 の 目的:
- 視覚的な埋め込みプロセスの空間的および時間的な特徴を調査する.
- 埋め込みがアクティブなニューラル表現または受動的な情報抑制を伴うかどうかを判断する.
主な方法:
- 人工感知性スコトマを生成するための新しい技術の開発.
- ホモゲーな灰色の正方形を背景に輝く騒音で表現する.
- 安定した固定の過程で正方形が消え去り,背景の騒音に置き換えられる様子を観察する.
主要な成果:
- 埋め込みは活発な視覚的プロセスであり,周囲のニューラル表現を含む可能性が高い.
- カラーとテクスチャの埋め込みは独立して起こり,異なる基礎メカニズムを示唆します.
- スコトマからの情報は完全に抑制されず,運動知覚に影響を与える可能性があります.
- 幻想的な輪郭は,埋め込みプロセスに大きく影響を与えることができます.
結論:
- ビジュアルフィーリングは,欠けているビジュアルデータを無視するだけでなく,積極的な建設的なプロセスです.
- 色や質感のような異なる視覚的特徴の埋め込みには,独立した神経機構が裏付けている可能性があります.
- 埋め込みプロセスは,動きや幻想的な輪郭を含む他の視覚知覚現象との複雑な相互作用を示しています.
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