微細な変動と言語変化の神経言語学的シグネチャ:個々の産出変動が形態統語処理の違いを予測する
Jade Sandstedt1, Maki Kubota2, Merete Anderssen3
1Volda University College, Department of Language and Literature, 6106 Volda, Norway.
Cognition
|February 25, 2026
まとめ
言語処理は、個々の言語経験と方言文法によって形成されます。話し言葉のノルウェー語におけるわずかな変動でさえ、人々が文を理解する方法に影響を与え、動的な言語理解を示しています。
科学分野:
- 神経科学
- 言語学
- 心理学
背景:
- 文法的微細な変動と形態統語変化は、独自の研究機会をもたらす。
- ノルウェー語の分詞同意は、方言や話者全体にわたって広範で連続的な変動を示す。
- 言語産出とオンライン処理の相互作用を理解することは極めて重要である。
研究 の 目的:
- 文法的微細な変動の神経生理学的および行動的影響を調査する。
- 個々の産出パターンと文処理の関係を探る。
- 進行中の形態統語変化が言語理解にどのように影響するかを調べる。
主な方法:
- 156人の参加者から記録された事象関連電位(ERP)。
- 参加者は、不変(対照)および可変/変化(標的)の文法的形式を持つ文を読んだ。
- 方言背景、個々の産出頻度、年齢、話し言葉の同意率の分析。
主要な成果:
- 集団レベルの方言背景と個々の産出頻度が文処理を調節する。
- 方言変化地域出身の参加者は、P600効果の減衰と段階的な受容性判断を示した。
- 同意違反に対する神経感度は、個人の年齢と話し言葉の同意率によって調節された。
結論:
- 言語処理は、微細な個々の言語経験によって動的に形成される。
- コミュニティレベルの曝露、個人の産出頻度、社会言語学的な位置づけが言語理解に影響を与える。
- 方言文法の変動は、標準的な言語理解中の統合コストに影響を与える。
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