测量人类背景恐惧条件化和巩固后的保留
Yanfang Xia1, Jelena Wehrli1, Samuel Gerster1
1Computational Psychiatry Research, Department of Psychiatry, Psychotherapy, and Psychosomatics, Psychiatric University Hospital Zurich, University of Zurich, 8032 Zurich, Switzerland.
Learning & memory (Cold Spring Harbor, N.Y.)
|August 8, 2023
概括
这项研究表明,配置式恐惧调节有效地测量了人类在七天内长期的恐惧记忆保留. 研究人员确定了可靠的生理标志物,如惊眼反应和瞳孔扩张,以评估这种厌恶性学习.
科学领域:
- 神经科学是一个神经科学.
- 认知心理学 认知心理学
- 行为科学 行为科学
背景情况:
- 恐惧调节是研究厌恶性学习和记忆的关键模型.
- 在人类中量化背景恐惧的获取和长期保留提出了方法学上的挑战.
- 以前的研究已经使用了各种措施,如惊眼反应 (SEBRs) 和皮肤导电性反应 (SCRs),但比较是有限的.
研究的目的:
- 调查诱导和测量语境恐惧记忆保留在7天间隔的人类方法.
- 为了比较不同的量化方法,以获得背景恐惧.
- 建立对长期恐惧记忆的强大和可复制的测量技术.
主要方法:
- 两个实验使用了半沉浸式虚拟现实范式.
- 使用了具有多个视觉线索 (条件刺激[CTX]) 的配置性恐惧调节范式.
- 测量包括声明性记忆,惊眼反应 (SEBRs),皮肤导电性反应 (SCRs) 和瞳孔扩张.
主要成果:
- 声明式学习和7天内存保留在虚拟现实和配置范式中得到证实.
- 皮肤导电性反应和瞳孔扩张在获取过程中区分有条件和无条件刺激.
- 在7天的回忆测试中,启动眼反应和瞳孔扩张显示了条件和无条件刺激之间的显著差异,效果大小很大.
结论:
- 配置性恐惧调节有效地证明了人类在7天内保留上下文恐惧记忆.
- 惊眼反应和瞳孔扩张是评估长期背景恐惧记忆的敏感和可复制的生理措施.
- 这些发现为需要长期记忆评估的临床前干预研究提供了验证的方法.
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