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从fMRI指导的rTMS研究中学到的经验教训,关于在数值Stroop任务中的表现.

Lysianne Beynel1, Hannah Gura1,2, Zeynab Rezaee1

  • 1Noninvasive Neuromodulation Unit, Experimental Therapeutics Branch, Intramural Research Program, National Institute of Mental Health, Bethesda, Maryland, United States of America.

PloS one
|May 6, 2024
PubMed
概括

先进的计算建模揭示了跨磁刺激 (TMS) 通过内突 (IPS) 影响在数值Stroop任务期间的决策过程. 这凸显了复杂分析对于理解大脑刺激效应的有用性.

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科学领域:

  • 认知神经科学 认知神经科学
  • 神经成像是一种神经成像.
  • 计算精神病学是一种计算精神病学.

背景情况:

  • 斯特鲁普任务是研究矛盾信息如何影响决策的标准方法.
  • 之前的研究,包括神经成像和重复性跨磁刺激 (rTMS) 研究,已经在Stroop任务中涉及内 (IPS).
  • 个性化功能性磁共振成像 (fMRI) 准先前在数值Stroop任务中显示了rTMS的优异结果.

研究的目的:

  • 调查fMRI指导的rTMS对数值Stroop任务性能的影响是否在现代技术下仍然存在.
  • 将传统的反应时间分析与先进的漂移扩散建模进行比较,以评估rTMS有效性.
  • 探索RTMS对感知决策的影响,使用先进的计算方法.

主要方法:

  • 15名参与者完成了数值Stroop任务.
  • 通过个性化fMRI识别的右侧IPS应用了主动或假的10HzrTMS.
  • 使用传统的反应时间测量和漂移扩散建模来分析性能.

主要成果:

  • 标准反应时间分析显示,活跃rTMS和假rTMS之间没有显著差异,这可能是由于实践效应或累积刺激.
  • 漂移扩散建模揭示了rTMS对漂移速率的显著影响,表明对一致和不一致的刺激的处理发生了改变.
  • 先进的计算建模成功阐明了rTMS对大脑功能的影响,而更简单的分析失败了.

结论:

  • 虽然传统分析可能无法检测到微妙的影响,但先进的计算建模可以揭示RTMS对认知过程的影响.
  • 该研究表明,rTMS通过IPS影响了Stroop数值任务中的决策参数.
  • 这强调了神经刺激研究中复杂的分析方法对于更深入地了解大脑功能的重要性.