杏仁体的低强度跨脑聚焦超声波在处理情绪期间调节神经激活
Kathryn C Jenkins1,2, Katherine Koning3, Arman Mehzad3
1Institute for Behavioral Medicine Research, The Ohio State University, Columbus, OH, United States.
Frontiers in neuroimaging
|June 16, 2025
概括
低强度聚焦超声波 (LIFU) 在情绪处理过程中急剧抑制杏仁体的反应. 这种非侵入性神经调节技术在健康个体中选择性地减少了杏仁体的激活,而不会影响其他大脑区域.
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.
- 医疗成像医学成像
背景情况:
- 低强度聚焦超声波 (LIFU) 是一种具有深度透和高空间分辨率的非侵入性神经调节技术.
- 杏仁体是一个关键的结构,涉及神经精神疾病,使其成为神经调节的重要目标.
- 之前的研究表明,LIFU可以改变静止状态的杏仁体活动,但其基于任务的调制仍未得到充分研究.
研究的目的:
- 在基于任务的功能磁共振成像 (fMRI) 范式中使用LIFU调查杏仁体的选择性调制.
- 评估LIFU对健康个体桃体反应性的急性影响.
- 为了比较杏仁体激活的变化与非目标区域,如状回环和质体.
主要方法:
- 10名健康参与者接受了使用情绪面部评估任务 (EFAT) 的基线fMRI扫描.
- 参与者接受了针对杏仁体的10分钟LIFU治疗.
- 进行了LIFU后的fMRI扫描以评估大脑激活的变化,使用对对样本t测试进行分析.
主要成果:
- 从LIFU超声波前到后,左桃体和右桃体的激活显著下降 (p <0.05).
- 在LIFU前后的扫描中,在状回环或丘脑中没有发现激活的显著差异.
- 这些发现表明LIFU对杏仁体反应性的选择性影响.
结论:
- 在积极的社会情感处理过程中,LIFU急剧抑制杏仁体的反应.
- 这项研究证明了LIFU在桃体等皮下结构的向神经调节方面的潜力.
- 作为一种非侵入性工具,LIFU显示出有前途的潜力,用于调查和潜在地治疗涉及杏仁体功能障碍的疾病.
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