高齢者の間で個別の違い
Daniel Fogerty1, Judy R Dubno2
1Department of Speech and Hearing Science, University of Illinois Urbana-Champaign, Champaign, Illinois, United States of America.
PloS one
|September 4, 2025
まとめ
高齢者は 聞く方法が違うのです 聴覚が正常な人は 単語を頼りにしますが 聴覚障害のある人は 雑音の中での話し方を 垣間見ることで 益を得ます
科学分野:
- 聴覚神経科学
- 認知心理学
- 言語の知覚
背景:
- 騒音の中でのスピーチ認識は 高齢者にとっては難しいものです
- 聴覚や認知能力の違いが 言語の理解に影響します
- これらの違いを理解することは 効果的な聴覚障害の治療法の開発に不可欠です
研究 の 目的:
- 正常な聴覚 (ONH) と聴覚障害 (OHI) の高齢者が,騒音中の音声認識のための聴覚と認知資源をどのように割り当てているかを調査する.
- 音声認識のパフォーマンスを予測する様々な聴覚的および認知的要因の相対的な重要性を決定する.
- これらの要因の予測力をONHとOHIグループで比較する.
主な方法:
- 劣化したスペクトルシグナル,競合するノイズ,および結合された劣化条件下で,一時的にフィルターされたスピーチの3つのデータセットを使用した.
- 参加者の聴覚を均等にするため,スペクトル形のスピーチを使用しました.
- 拡張された短期目標理解度 (STOI) メトリクを使用して発音認識スリーホールド (SRT) を導出し,複数の回帰優位性分析を通じて予測要素の重要性を分析した.
主要な成果:
- 聴覚が正常な高齢者は 語彙の知識と音声認識の関連性が強いことを示しました
- 聴覚障害のある高齢者は 音声認識能力と音声認識能力の 強い関連性を示しました
- 作業記憶と聴覚の値を含む予測変数は,ONHの73%とOHIの89%の差異を説明し,他の音声認識測定値に一般化しました.
結論:
- 聴覚障害のある高齢者と正常な聴覚を持つ高齢者の聴覚戦略は異なります
- 単語の知識はONHのリスナーにとって重要な認知リソースであり,OHIのリスナーにとってはスピーチの垣間見ることが重要です.
- これらの発見は,年齢に関連した音声認識の障害における 聴覚と認知の要因の異なる役割を強調し,個別化された聴覚リハビリテーションに情報を提供する.
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