人类的脑下层核暂时抑制了积极的注意力过程
Cheol Soh1,2, Mario Hervault1,2, Nathan H Chalkley1,2,3
1Department of Psychological and Brain Sciences, University of Iowa, Iowa City, IA 52242, USA.
Brain : a journal of neurology
|March 4, 2024
概括
脑下细胞核 (STN) 抑制注意力,正如与声音相关的STN活动在注意力缺失之前所表明的那样. STN的深度大脑刺激 (DBS) 因果地支持这种作用,影响认知过程.
科学领域:
- 神经科学是一个神经科学.
- 认知神经科学 认知神经科学
- 神经外科 神经外科
背景情况:
- 亚thalamic核 (STN) 对于运动控制至关重要,也是通过深度大脑刺激 (DBS) 治疗帕金森病的目标.
- STN的连接延伸到认知电路,表明它在运动功能之外的作用,可能在注意力方面.
- STN-DBS可以影响认知过程,暗示STN参与非运动抑制.
研究的目的:
- 为了研究人体体体底核在暂时抑制视觉注意力的作用.
- 为了确定STN活动是否在分散注意力的刺激引起的注意力下降之前和中介.
- 通过使用DBS,以因果测试STN对注意力抑制的贡献.
主要方法:
- 在视觉注意任务期间,在门诊环境中从STN DBS植入物中记录了内局部场势 (LFP).
- 同时记录高密度EEG以获得稳定状态视觉唤起潜力 (SSVEP) 作为视觉注意力的神经指数.
- 在单独的实验会话中通过DBS调节STN活动,以评估对注意力的因果影响.
主要成果:
- 在STN中与声音相关的马频率活动之前,SSVEP在分散注意力的声音之后减少.
- 试验对试验的建模表明,STN活动在统计学上调解了声音对SSVEP的抑制作用.
- 通过DBS进行STN调制显著降低了SSVEP与声音相关的抑制,提供了因果证据.
结论:
- 人类STN有助于抑制注意力,支持域一般的抑制作用.
- 这些发现表明STN-DBS的认知副作用的机制,特别是注意力.
- 新型门诊LFP记录技术使得在认知任务中研究皮质下细胞核成为可能.
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