甲体下核中的theta和beta能量对跨次区域和半球的冲突作出反应
Jessica L Bowersock1, Scott A Wylie1, Ahmad Alhourani1
1Department of Neurological Surgery, University of Louisville, Louisville, KY 40202, USA.
Brain communications
|January 30, 2025
概括
在动作冲突期间,背部亚thalamic核显示出更大的theta活动,支持其在控制中的作用. 背部和腹部亚体核区域都参与抑制不正确的冲动.
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
- 神经生理学 神经生理学
背景情况:
- 亚thalamic核 (STN) 是基本质电路的组成部分,影响动作选择和冲动控制.
- 显著的皮质输入表明STN的背部和腹部方面的功能专业化.
研究的目的:
- 调查在动作冲突期间背部和腹部亚体核的不同作用.
- 探索STN子区域内抑制控制的基础神经生理机制.
主要方法:
- 在接受深度脑刺激手术的10名帕金森病患者中,在西蒙任务期间进行神经生理学记录 (局部场势).
- 分析背部和腹部STN亚区域的和β频段活动,考虑半球 (半侧/反侧) 和运动反应.
主要成果:
- 与腹部STN相比,背部STN在动作冲突期间表现出显著更高的太功率.
- 背部和腹部STN在冲突试验中都显示出增强的β功率,特别是在半侧半球,这表明它在抑制冲动行为方面的作用.
- 腹部STN中较高的试验间β功率与冲突试验的精度下降相关,可能作为生物标志物.
结论:
- 有证据支持STN子区域内的功能解离,背部STN在调节行动冲突中发挥着关键作用.
- 两侧半球的参与凸显了它在抑制不正确行动冲动方面的重要性.
- 腹部STN的β活性可能表明冲突解决的性能受损.
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