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高频rTMS对尼古丁依赖个体的奖励电路的调节:初步fMRI研究
Tao Wang1, Ruiyang Li1, Dongyan Chen1
1Department of Radiology Zhejiang Hospital School of Medicine Zhejiang University, Hangzhou, China.
Neural plasticity
|September 5, 2024
概括
针对左背侧前额皮层 (L-DLPFC) 的重复性跨体磁刺激 (rTMS) 有效地减少了吸烟成和渴望. 这种治疗改善了大脑奖励回路中的功能连接,这表明尼古丁依赖的关键神经机制.
科学领域:
- 神经科学是一个神经科学.
- 成研究 研究成研究
- 大脑刺激 大脑刺激
背景情况:
- 重复性横磁性刺激 (rTMS) 显示在减少成行为和渴望方面具有前景.
- 对于治疗尼古丁依赖的rTMS疗效背后的精确神经机制尚未完全理解.
- 研究奖励回路中的大脑活动变化对于理解治疗效应至关重要.
研究的目的:
- 为了检查高频rTMS针对左背侧前额皮质 (L-DLPFC) 对吸烟成的影响.
- 研究奖励回路中的自发大脑活动和功能连接的变化.
- 为了将神经变化与尼古丁依赖的临床改善相关联.
主要方法:
- 17名尼古丁依赖者在两周内接受了10次10HzrTMS的10次治疗.
- 休息状态功能磁共振成像 (fMRI) 在rTMS干预前后进行.
- 功能连接 (FC) 分析侧重于与奖励相关的区域,包括内核 (NAc) 和DLPFC.
主要成果:
- 参与者报告说,尼古丁依赖性减少,戒断症状减轻,治疗后渴望减少.
- 在右NAc和几个视觉和时间处理区域 (例如,右ITG,SOG) 之间观察到增加的FC.
- 右NAc与右ITG/SOG之间的FC变化与吸烟量表得分的降低有负相关性.
结论:
- 高频L-DLPFC-rTMS有效地减少了尼古丁依赖和戒断症状.
- 大脑的奖励回路中的功能障碍的连接与尼古丁成有关.
- 有针对性的rTMS可以通过调节这些奖励电路路径来提供治疗策略.
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