对强迫症和图雷特综合征的有效深度大脑刺激增加了整个网络的神经变异性
medRxiv : the preprint server for health sciences
|November 24, 2025
概括
在内球 (GPi) 和内条纹体 (VS) 中的神经变异性增加预测图雷特综合征 (TS) 和强迫症 (OCD) 患者的症状改善,这些患者接受了深度大脑刺激 (DBS). 这表明最佳的生理变异性是治疗成功的关键.
科学领域:
- 神经科学是一个神经科学.
- 神经调节是一种神经调节.
- 计算精神病学是一种计算精神病学.
背景情况:
- 深度大脑刺激 (DBS) 是一种经过验证的强迫症 (OCD) 和图雷特综合征 (TS) 的治疗方法.
- 之前的研究表明,对于强迫症的DBS响应者,腹状条纹体 (VS) 的昼夜周期被破坏,神经变异性增加.
- 目前的研究调查了神经可变性和症状改善之间的这种联系是否超越VS延伸到内球体 (GPi).
研究的目的:
- 测试全球内体 (GPi) 中神经变异性增加是否预测图雷特综合征 (TS) 患者的症状改善.
- 确定在强迫症障碍 (OCD) 的腹状条纹体 (VS) 中观察到的神经变异性和症状改善之间的关系是否可以将其推广到TS的GPi.
主要方法:
- 慢性局部现场潜力 (LFP) 记录来自四名患有强迫症和并发性TS的患者,他们在VS和GPi中接受了DBS.
- 在9赫兹频段的光谱功率连续测量超过900天.
- 通过对神经功率时间序列应用的自回归模型来估计神经变异性.
主要成果:
- 在所有四名患者中,VS (强迫症) 和GPi (TS) 的神经变异性都准确地归类了应答者状态.
- 两名患者实现了对强迫症和TS的响应状态.
- 交叉相关性和格兰杰因果关系分析揭示了VS和GPi之间明显的领先滞后间隔和方向性,表明了独特的信息内容.
结论:
- 在VS和GPi中增加的低频神经变异性预测了分别在OCD和TS中症状的改善.
- 这些发现支持并扩展了对强迫症的先前观察,加强了最佳生理变异性对有效的生物系统功能至关重要的原则.
- 结果表明,基底质点的神经变异性是运动和行为障碍中DBS治疗疗效的重要生物标志物.
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