单侧条形深脑刺激改善认知控制
bioRxiv : the preprint server for biology
|November 26, 2025
概括
单边深度大脑刺激 (DBS) 有效地改善了认知控制,匹配双边刺激.
科学领域:
- 神经科学是一个神经科学.
- 精神疾病 精神疾病
- 深度大脑刺激 深度大脑刺激
背景情况:
- 腹腔囊/腹腔条纹体 (VCVS) 的深度大脑刺激 (DBS) 通过增强认知控制来治疗强迫症等精神疾病.
- 由于对刺激参数和目标如何影响神经活动和行为的不完全理解,VCVS DBS的临床疗效受到限制.
- 之前的研究使用认知控制建立了VCVS DBS的临床前模型,但没有解决在人类中观察到的横向性影响.
研究的目的:
- 在VCVS DBS的动物模型中研究横向性效应,特别是比较单边和双边的中条纹体刺激.
- 为了确定单边刺激是否可以改善认知控制,类似于双边刺激.
- 为了检查认知控制的性别差异,从刺激中改善认知控制.
主要方法:
- 利用动物模型研究认知控制,这是精神疾病中受损的关键决策组成部分.
- 进行了右和左单侧中条纹体刺激,并评估了对反应时间和准确性的影响.
- 采用计算建模来分析刺激如何改变决策变量.
主要成果:
- 右侧和左侧单侧刺激都通过减少响应时间而改善认知控制,而不会影响准确性.
- 这些发现复制了之前研究中双边刺激观察到的认知控制改善.
- 计算建模表明,单边和双边刺激调节相同的决策变量.
- 女性在刺激后表现出与男性相同的认知控制改善.
结论:
- 在动物模型中,单边中条纹体刺激在增强认知控制方面与双边刺激同样有效.
- 这证实了动物模型用于研究DBS机制的有效性,并表明单边刺激可能提供治疗优势.
- 研究结果证实,性行为不会影响通过刺激改善认知控制,为DBS疗法提供了关键的见解.
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