在视觉空间工作记忆实践单次课程期间进行的跨直流刺激中的安慰剂效应的证据和来源
Andrew Hooyman1, Nicole K Haikalis1, Peiyuan Wang1
1School of Biological and Health Systems Engineering, Arizona State University, 501 E. Tyler Mall, MC 9709, Tempe, AZ, 85287, USA.
Scientific reports
|April 20, 2024
概括
经直流刺激 (tDCS) 在认知训练中显示出安慰剂效应,即使没有活性刺激. 参与者对tDCS疗效的期望影响了这些观察到的安慰剂效应.
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
背景情况:
- 超直流刺激 (tDCS) 是一种非侵入性脑刺激技术.
- tDCS用于增强认知训练,但安慰剂效应可能有助于其益处.
- tDCS的安慰剂效应需要进一步描述.
研究的目的:
- 调查tDCS对认知训练的可测量的安慰剂效应.
- 为了确定导致tDCS安慰剂效应的因素.
主要方法:
- 83名成年人被随机分配到对照组,虚假tDCS或活跃tDCS组.
- 在刺激过程中,参与者完成了一项视觉空间工作记忆任务 (Corsi Block Tapping Task).
- 在虚假和活跃组中评估了关于tDCS疗效的预期.
主要成果:
- 活跃和虚假的tDCS组都比对照组有更大的改善,这表明了安慰剂效应.
- 参与者对tDCS疗效的期望和接受活性刺激的信念与安慰剂效应相关.
- 假药效应表明认知训练的好处可以在没有活跃刺激的情况下发生.
结论:
- tDCS诱导的认知训练效益可能会受到安慰剂效应的影响.
- 治疗期望在tDCS的安慰剂效应中起着重要作用.
- 未来的研究应该考虑并可能利用tDCS研究中的治疗期望.
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