脳内の言葉の空間的表現は,一方的な無視の患者の研究によって示唆されています
1Cognitive Science Center, Johns Hopkins University, Baltimore, Maryland 21218.
Nature
|July 19, 1990
まとめ
脳の損傷は,単語構造の空間的コーディングを妨害することによって,読書と綴りに影響を及ぼします. 患者さん N.G. 右側の誤りを示し,綴り表現は,単語中心のシステムで空間的に編成されていることを示唆しました.
科学分野:
- 認知神経科学とは
- 精神言語学は,心理言語学である.
- 神経学 神経学とは
背景:
- 読み書きは,文字の綴りやグラフームの順番を指定する綴り表現に依存している.
- グラフームの順序が正規表現でどのように表現され,処理されるかを理解することは,重要な課題です.
- 脳損傷による障害である一方的怠慢は,片方の刺激に対する知覚と反応を損なう.
研究 の 目的:
- オルトグラフィック表現の性質とグラフームの順序処理を調査する.
- オルトグラフィック情報へのアクセスと操作における空間コーディングの役割を探求する.
- 単方面の怠慢が読書と綴りのプロセスにどのように影響するか調べる.
主な方法:
- 患者 (N.G.) のケーススタディ 単独の怠慢で発生したものです.
- 患者による読み書き・綴り間違いの分析.
- 異なる刺激指向と応答タイプにおけるパフォーマンスの評価.
主要な成果:
- 患者さん N.G. 文字の長さに関係なく,単語の右半分にのみ読み書き・綴り間違いが認められた.
- エラーパターンは,水平,垂直,および反射された単語プレゼンテーションで一貫したままでした.
- 書き込み,口頭,および逆の口頭綴りの応答で一貫したエラーパターンが観察されました.
結論:
- オルトグラフィック表現は空間的にコードされているように見える.
- グラフームの順序情報は,単語中心の座標系内で処理されます.
- このシステムは方向不変であり,刺激の中央点ではなく,言葉の中央点を中心としています.
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