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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
2014-01-28
发表期刊FRONTIERS IN BEHAVIORAL NEUROSCIENCE
ISSN1662-5153
文章类型Article
卷号8期号:0页码:14
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
收录类别SCI
语种英语
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
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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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