超直流刺激对健康个体快速自动化命名性能的影响
Özlem Öge-Daşdöğen1, R Gülşah Özer2, Gökçer Eskikurt3,4
1Department of Speech and Language Therapy, Faculty of Health Sciences, Atlas University, Istanbul, Turkey.
Journal of speech, language, and hearing research : JSLHR
|December 29, 2025
概括
在健康的成年人中,阳道横直流刺激 (tDCS) 改善了快速自动化命名 (RAN) 速度. 相反,阴极tDCS减缓了性能,这表明时间测量对神经刺激效应敏感.
科学领域:
- 神经科学是一个神经科学.
- 认知心理学 认知心理学
- 神经调节是一种神经调节.
背景情况:
- 快速自动化命名 (RAN) 评估了视觉刺激命名的速度和准确性,这对于语音处理和语言生产至关重要.
- 超直流刺激 (tDCS) 是一种用于调节皮层刺激性的非侵入性脑刺激技术.
- 了解tDCS对RAN等认知任务的影响,可以为语言和阅读障碍的治疗干预提供信息.
研究的目的:
- 调查阳极,阴极和虚假tDCS对健康年轻人RAN表现的影响.
- 确定tDCS是否可以调节命名的特定时间方面,例如语音反应时间 (vRT) 和任务完成时间 (TCT).
- 评估不同RAN测量 (精度与时间) 对神经刺激的敏感性.
主要方法:
- 60名健康的,右撇子的年轻人参与了这项研究,并被随机分配到阳极,阴极或虚拟tDCS组.
- 应用了20分钟的tDCS会话,目标是左侧门 - 顶 - 尾结.
- 在刺激前后使用准确度,vRT和TCT测量RAN性能,跨颜色,数字,字母和组合子任务.
主要成果:
- 在所有RAN子任务中,Anodal tDCS显著减少了颜色命名和TCT的vRT.
- 阴极tDCS显著增加了颜色命名的vRT和字母和组合子任务的TCT.
- 假冒tDCS对RAN性能没有显著影响,作为对照.
结论:
- 阳极tDCS提高了RAN性能,特别是通过提高速度 (减少TCT) 和选择性地影响VRT.
- 阴极tDCS似乎会损害特定RAN子任务的性能,这表明基于刺激极性的差异效应.
- 像TCT这样的时间测量在检测健康个体的tDCS影响方面比准确性更为敏感,这突显了RAN在认知语言障碍评估方面的潜力.
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