小脑在时间处理中的作用:一项附带负变异研究
Daniela Mannarelli1, Caterina Pauletti1, Alessia Petritis1
1Department of Human Neurosciences, Sapienza University of Rome, Viale dell'Università 30, Rome, Italy.
Neuroscience letters
|May 27, 2023
概括
小脑在时间感知中发挥着关键作用,特别是在区分短时间间隔时. 通过跨直流刺激 (tDCS) 抑制小脑活动,损害了时间间隔区分.
科学领域:
- 神经科学是一个神经科学.
- 认知科学 认知科学
- 人类行为人类行为.
背景情况:
- 时间管理对于人类的认知和行为至关重要.
- 基底核和小脑参与时间控制.
- 小脑在时间处理中的精确作用需要进一步研究.
研究的目的:
- 研究小脑在时间处理中的作用.
- 为了检查小脑抑制对时间估计的影响.
- 分析机动任务期间的附带负变化 (CNV) 参数.
主要方法:
- 健康的受试者执行了一项S1-S2运动任务,涉及持续时间的歧视.
- 脑小脑活动通过使用正极性经直流刺激 (tDCS) 暂时受到抑制.
- 在tDCS (阴极和假设会话) 之前和之后测量了CNV参数.
主要成果:
- 阴极tDCS在短 (800毫秒) 和目标 (1200毫秒) 间隔中降低了CNV振幅.
- 在短时间和目标间隔的阴极tDCS后,时间歧视的错误率显著增加.
- 在不同条件下,没有观察到反应时间的显著差异.
结论:
- 小脑参与时间感知,特别是区分秒和次秒间隔.
- 小脑功能会影响时间间隔区分的准确性.
- tDCS诱导的小脑抑制提供了关于其在时间机制中的作用的见解.
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