人間の側頭葉皮質におけるモジュール構造の半球間非対称性
R A Galuske1, W Schlote, H Bratzke
1Department of Neurophysiology, Max-Planck-Institute for Brain Research, Deutschordenstrasse 46, 60528 Frankfurt a.M., Germany. galuske@mpih-frankfurt.mpg.de
Science (New York, N.Y.)
|September 16, 2000
まとめ
左半球は左半球である.
科学分野:
- 神経科学は神経科学である.
- 監査処理 監査処理
- 脳の横行化についてです.
背景:
- 言語のための聴覚信号処理は横方向化されています.
- これは,ブロードマンエリア22の後部地域を含む.
- 機能的横向化は,マイクロ回路の組織的な違いと相関しています.
研究 の 目的:
- ブロードマン領域22の微回路における半球間差異を調査する.
- 機能的組織と解剖学的組織の関係を探求する.
- 言語処理における機能的横向化に構造的非対称性が根底にあるかどうかを判断する.
主な方法:
- ニューロン経路トレーシングが採用されました.
- ブロードマン領域22の固有のマイクロ回路組織の分析
- ニューロンのクラスターの距離と半球間の直径の比較.
主要な成果:
- ブロードマン領域22は,マイクロ回路の半球間差異を示しています.
- ニューロンのクラスターは,長距離接続のモジュラーネットワークで結びついています.
- 左半球のニューロンのクラスターは,右半球のクラスターよりも約20%遠く離れている.
結論:
- ブロードマン領域22の構造的非対称性は,機能的横向化と相関しています.
- 左半球は,面積あたりのより明確な機能単位を含んでいるかもしれません.
- これは,左半球の領域22で専門的な言語処理能力がより高いことを示唆しています.
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