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Peritraumatic startle response predicts the vulnerability to develop PTSD-like behaviors in rats: a model for peritraumatic dissociation | |
Dong, Xinwen; Li, Yonghui | |
摘要 | Peritraumatic dissociation, a state characterized by alteration in perception and reduced awareness of surroundings, is considered to be a risk factor for the development of post-traumatic stress disorder (PTSD). However, the predictive ability of peritraumatic dissociation is questioned for the inconsistent results in different time points of assessment. The startle reflex is an objective behavioral measurement of defensive response to abrupt and intense sensory stimulus of surroundings, with potentials to be used as an assessment on the dissociative status in both humans and rodents. The present study examined the predictive effect of acoustic startle response (ASR) in different time points around the traumatic event in an animal model of PTSD. The PTSD-like symptoms, including hyperarousal, avoidance, and contextual fear, were assessed 2-3 weeks post-trauma. The results showed that (1) the startle amplitude attenuated immediate after intense footshock in almost half of the stress animals, and (2) the attenuated startle responses at 1 h but not 24 h after stress predicted the development of severe PTSD-like symptoms. These data indicate that the startle alteration at the immediate period after trauma, including 1 h, is more important in PTSD prediction than 24 h after trauma. Our study also suggests that the startle attenuation immediate after intense stress may serve as an objective measurement of peritraumatic dissociation in rats. |
关键词 | post-traumatic stress disorder startle peritraumatic dissociation vulnerability rat models |
2014-01-28 | |
语种 | 英语 |
发表期刊 | FRONTIERS IN BEHAVIORAL NEUROSCIENCE |
ISSN | 1662-5153 |
卷号 | 8期号:0页码:14 |
期刊论文类型 | Article |
收录类别 | SCI |
WOS记录号 | WOS:000330542200001 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://ir.psych.ac.cn/handle/311026/14125 |
专题 | 中国科学院心理健康重点实验室 |
作者单位 | Chinese Acad Sci, Inst Psychol, Key Lab Mental Hlth, Beijing 100101, Peoples R China |
第一作者单位 | 中国科学院心理健康重点实验室 |
推荐引用方式 GB/T 7714 | Dong, Xinwen,Li, Yonghui. Peritraumatic startle response predicts the vulnerability to develop PTSD-like behaviors in rats: a model for peritraumatic dissociation[J]. FRONTIERS IN BEHAVIORAL NEUROSCIENCE,2014,8(0):14. |
APA | Dong, Xinwen,&Li, Yonghui.(2014).Peritraumatic startle response predicts the vulnerability to develop PTSD-like behaviors in rats: a model for peritraumatic dissociation.FRONTIERS IN BEHAVIORAL NEUROSCIENCE,8(0),14. |
MLA | Dong, Xinwen,et al."Peritraumatic startle response predicts the vulnerability to develop PTSD-like behaviors in rats: a model for peritraumatic dissociation".FRONTIERS IN BEHAVIORAL NEUROSCIENCE 8.0(2014):14. |
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