在中风后失语症中,个体内变化和语言不稳定性:工作记忆需求的影响和与语言表现相关联
Lilla Zakariás1, Ágnes Lukács2
1Bárczi Gusztáv Faculty of Special Needs Education, Eötvös Loránd University, Budapest, Hungary; Semmelweis University Rehabilitation Clinic, Budapest, Hungary.
Brain and language
|February 20, 2026
概括
在语言表现方面,个体内变异性 (IIV) 在失言症患者中更高. 工作记忆需求的增加加剧了这种语言不稳定性,这表明IIV是中风后语言功能的关键指标.
科学领域:
- 神经科学是一个神经科学.
- 心理学 心理学 心理学
- 语言学的语言学.
背景情况:
- 个体内变化 (IIV) 表示人体内部的表现波动.
- 虽然与老化和临床群体的认知问题有关,但在中风后失语症中IIV的研究不足.
- IIV可能会显示出功能不稳定性和对超出平均表现的任务需求的敏感性.
研究的目的:
- 研究患有失语症和对照人群之间的会话间 (BS-IIV) 和会话内 (WS-IIV) 语言表现变化的差异.
- 检查IIV,工作记忆 (WM) 需求和在失言症中标准化的语言措施之间的关系.
- 为了确定WM需求是否影响语言表现变化在失语.
主要方法:
- 55名中风后失言症患者和17名神经典型成年人参与了这项研究.
- 参与者在四天内在低和高WM需求下完成了语音,词汇和语义听觉任务.
- 测量了WS-IIV和BS-IIV,以及标准化的语言评估.
主要成果:
- 在所有任务和条件中,失言症组显著表现出更高的WS-IIV.
- 在失言症组中观察到升高的BS-IIV,除了在WM对词法/语义任务需求较低的情况下.
- 在失言症组中,高WM需求增加了对词汇和语义任务的IIV,与对照组不同.
- 较高的IIV通常与标准化语言分数负相关,表明结果较差.
结论:
- 工作记忆的需求显著导致失语症患者语言表现的不稳定.
- IIV作为一个有价值的补充标记,以表示性能,提供对功能不稳定性的见解.
- 这些发现强调了在理解和潜在地管理中风后语言缺陷时考虑IIV的重要性.
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