对恐惧障碍的心理治疗方案的基础神经回路
Jinhee Baek1,2, Sukchan Lee1,3, Taesup Cho1
1Center for Cognition and Sociality, Institute for Basic Science (IBS), Daejeon, South Korea.
Nature
|February 15, 2019
概括
这项研究揭示了使用交替双边感官刺激 (ABS) 减少恐惧的神经通路. 在创伤治疗后, 这一脑电路涉及上和中, 维持恐惧减轻.
科学领域:
- 神经科学
- 心理学
- 创伤研究
背景情况:
- 创伤后应激障碍 (PTSD) 经常被用眼动脱敏和再处理 (EMDR) 等心理疗法治疗.
- 对于EMDR持续有效性的潜在神经机制在很大程度上仍未确定.
- 了解这些机制对于开发更有效的创伤干预至关重要.
研究的目的:
- 确定交替双边感官刺激 (ABS) 的长期恐惧减弱效应的神经通路.
- 调查上 (SC) 和中背丘脑 (MD) 电路在恐惧灭绝和记忆中的作用.
- 了解ABS如何调节与恐惧相关的大脑区域的神经活动.
主要方法:
- 小鼠接受了恐惧调节和灭绝模式,
- 使用光遗传技术在SC-MD电路中操纵神经元活动.
- 电生理记录和成像评估了SC,MD和底侧桃体 (BLA) 中的神经元活动.
主要成果:
- 视觉ABS显著降低了恐惧,并持续增加了SC和MD活动.
- 发现SC-MD电路既有必要又足以防止恐惧复发.
- 通过MD介导的输送回路,ABS被证明可以抑制恐惧编码细胞并稳定BLA中的抑制神经传递.
结论:
- 一个特定的神经通路涉及到SC和MD调解持续的恐惧减弱.
- 交替双边感官刺激 (ABS) 有效地准这种途径以实现恐惧的持久减少.
- 这些发现揭示了持续减轻创伤记忆的强大策略的神经基础.
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