An Attempt at Translating Novelty-enhanced Extinction of Context Conditioning From Rodents to Humans
2022年6月9日 更新者：Uppsala University
In rodents, novel exploration has been used to strengthen the consolidation of a variety of hippocampal-dependent learning tasks.
To our knowledge, no attempt have been made to translate the effect of strengthening the memory of an extinction of a context conditioning memory.
This study uses virtual reality for both context conditioning and novel exploration in an attempt at translating these findings from rodents to humans, thus, using novel exploration to strengthen an extinction memory.
Threat responses are measured with skin conductance and startle responses.
If this effect could be shown experimentally in humans, that experimental setup could become an important tool in understanding important memory processes of fear, such as reconsolidation and behavioral tagging.
研究概览
地位
完全的
条件
详细说明
The study employs healthy participants and includes three experimental sessions, roughly 24 h apart.
During the first session, participants undergo context conditioning in virtual reality where the CS+ and CS- are two different rooms.
During the second session, half of the participants perform an exploration of a novel virtual environment, and the other half performs a visual attention task.
About 60 min later, participants undergo extinction to the context conditioning performed in session 1, again in virtual reality.
In session 3, remaining threat responses are measured through a reinstatement procedure, again in virtual reality.
研究类型
介入性
注册 (实际的)
60
阶段
- 不适用
联系人和位置
本节提供了进行研究的人员的详细联系信息，以及有关进行该研究的地点的信息。
学习地点
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Uppsala、瑞典、75142
- Uppsala University, deparmtent of Psychology
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参与标准
研究人员寻找符合特定描述的人，称为资格标准。这些标准的一些例子是一个人的一般健康状况或先前的治疗。
资格标准
适合学习的年龄
18年 至 50年 (成人)
接受健康志愿者
是的
有资格学习的性别
全部
描述
Inclusion Criteria:
- Willing and able to provide informed consent and complete study procedures
Exclusion Criteria:
- Current psychiatric disorder.
- Current use of psychotropic medication
- Current use of neurological conditions
学习计划
本节提供研究计划的详细信息，包括研究的设计方式和研究的衡量标准。
研究是如何设计的？
设计细节
- 主要用途：基础科学
- 分配：随机化
- 介入模型：并行分配
- 屏蔽：单身的
武器和干预
参与者组/臂 |
干预/治疗 |
|---|---|
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实验性的：Experimental group
Novel exploration is used before extinction in an attempt to strengthen the extinction consolidation.
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Exploration of a novel 3D-environment in virtual reality.
Session 1. Threat conditioning to two different (CS+, CS-) virtual reality contexts (i.e rooms).
One of these is paired with a mild electric shock.
The context paired with the electric shock (CS+) is counterbalanced across participants.
Participants are instructed that they may receive electrical shocks during the procedure.
Session 2. Participants are repeatedly exposed to the both contexts from session 1 (CS+, CS-), but no shocks are delivered.
Session 3. Participants are again repeatedly exposed to both contexts from session 1 (CS+, CS-), after a few shocks delivered in a neutral context.
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实验性的：Control group
Participants perform a control task (visual attention) instead of the novel exploration.
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Session 1. Threat conditioning to two different (CS+, CS-) virtual reality contexts (i.e rooms).
One of these is paired with a mild electric shock.
The context paired with the electric shock (CS+) is counterbalanced across participants.
Participants are instructed that they may receive electrical shocks during the procedure.
Session 2. Participants are repeatedly exposed to the both contexts from session 1 (CS+, CS-), but no shocks are delivered.
Session 3. Participants are again repeatedly exposed to both contexts from session 1 (CS+, CS-), after a few shocks delivered in a neutral context.
Session 2. A visual attention task used as a control task instead of novel exploration.
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研究衡量的是什么？
主要结果指标
结果测量 |
措施说明 |
大体时间 |
|---|---|---|
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Physiological arousal response during reinstatement.
大体时间：Day 3
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Startle responses and skin conductance responses are used as measures of physiological arousal response.
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Day 3
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次要结果测量
结果测量 |
措施说明 |
大体时间 |
|---|---|---|
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Physiological arousal response during extinction
大体时间：Day 2
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Startle responses and skin conductance responses are used as measures of physiological arousal response
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Day 2
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Physiological arousal response during threat conditioning
大体时间：Day 1
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Startle responses and skin conductance responses are used as measures of physiological arousal response
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Day 1
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Subjective fear ratings
大体时间：Day 1, 2 & 3.
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Subjective ratings of fear (0-100) where 0 is no fear and 100 is worst imaginable fear.
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Day 1, 2 & 3.
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Subjective discomfort ratings
大体时间：Day 1, 2 & 3
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Subjective ratings of discomfort where 0 is no discomfort and 100 is worst imaginable discomfort.
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Day 1, 2 & 3
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其他结果措施
结果测量 |
措施说明 |
大体时间 |
|---|---|---|
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Navigation success
大体时间：Day 2
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Questions designed to probe the amount of navigation performed by participants doing the novel exploration task.
Three yes/no question of "Did you find object X?" and then participants are asked to point at their position in a stylized map overviewing the novel exploration context.
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Day 2
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State-Trait Anxiety Inventory (STAI-T)
大体时间：Day 2
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This is a self-rated questionnaire measuring trait anxiety.
Higher scores indicate higher level of trait-anxiety (range 20-80).
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Day 2
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Generalized anxiety disorder 7 (GAD-7)
大体时间：Day 2
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This is a self-rated questionnaire for screening and severity measuring of generalized anxiety disorder (range 0-21).
Higher scores indicate more symptoms of generalized anxiety.
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Day 2
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Patient Health Questionnaire 9 (PHQ-9)
大体时间：Day 2
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This is a self-rated questionnaire for screening for the presence and severity of depression (0-27).
Higher scores indicate a more symptoms, and severity of symptoms, of depression
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Day 2
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合作者和调查者
在这里您可以找到参与这项研究的人员和组织。
调查人员
- 首席研究员：Thomas Ågren, PhD、Uppsala University
出版物和有用的链接
负责输入研究信息的人员自愿提供这些出版物。这些可能与研究有关。
研究记录日期
这些日期跟踪向 ClinicalTrials.gov 提交研究记录和摘要结果的进度。研究记录和报告的结果由国家医学图书馆 (NLM) 审查，以确保它们在发布到公共网站之前符合特定的质量控制标准。
研究主要日期
学习开始 (实际的)
2021年11月15日
初级完成 (实际的)
2022年5月1日
研究完成 (实际的)
2022年5月1日
研究注册日期
首次提交
2021年11月6日
首先提交符合 QC 标准的
2021年11月26日
首次发布 (实际的)
2021年12月9日
研究记录更新
最后更新发布 (实际的)
2022年6月10日
上次提交的符合 QC 标准的更新
2022年6月9日
最后验证
2022年6月1日
更多信息
与本研究相关的术语
关键字
其他研究编号
- 2021-03596
计划个人参与者数据 (IPD)
计划共享个人参与者数据 (IPD)？
是的
IPD 计划说明
We plan to share anonymous behavioural data, training material, Statistical Analysis plan, and informed consent form on the project site on Open Science Framework (https://osf.io/4yjev/).
Statistical Analysis Plan will be pre-registered on the same site (Open Science Framework).
IPD 共享时间框架
Data will be available from completion of analysis and publication, and onwards.
IPD 共享访问标准
Anonymous behavioural data, training material, Statistical Analysis plan, and informed consent form will be made public on the project site on Open Science Framework (https://osf.io/4yjev/)
IPD 共享支持信息类型
- 树液
- 国际碳纤维联合会
药物和器械信息、研究文件
研究美国 FDA 监管的药品
不
研究美国 FDA 监管的设备产品
不
此信息直接从 clinicaltrials.gov 网站检索，没有任何更改。如果您有任何更改、删除或更新研究详细信息的请求，请联系 register@clinicaltrials.gov. clinicaltrials.gov 上实施更改，我们的网站上也会自动更新.