ISSN 1671-3710
CN 11-4766/R
主办:中国科学院心理研究所
出版:科学出版社

心理科学进展 ›› 2022, Vol. 30 ›› Issue (2): 365-374.doi: 10.3724/SP.J.1042.2022.00365

• 研究前沿 • 上一篇    下一篇

催产素影响恐惧习得和消退的认知神经机制

冯攀, 杨可, 冯廷勇()   

  1. 西南大学心理学部, 重庆 400715
  • 收稿日期:2021-06-25 出版日期:2022-02-15 发布日期:2021-12-24
  • 通讯作者: 冯廷勇 E-mail:fengty0@swu.edu.cn
  • 基金资助:
    国家自然科学基金青年项目(31800959);中央高校基本科研业务费专项资金项目(SWU118091);西南大学教育教学改革研究项目(2020JY082)

Cognitive neural mechanisms underlying the impact of oxytocin on fear acquisition and extinction

FENG Pan, YANG Ke, FENG Tingyong()   

  1. Faculty of Psychology, Southwest University, Chongqing 400715, China
  • Received:2021-06-25 Online:2022-02-15 Published:2021-12-24
  • Contact: FENG Tingyong E-mail:fengty0@swu.edu.cn

摘要:

恐惧是一种基本的情绪, 在人类的生存和适应中发挥着重要作用。先前的研究表明, 杏仁核、背侧前扣带回、脑岛等脑区是条件化恐惧习得的认知神经基础, 杏仁核、海马和腹内侧前额叶等脑区在恐惧消退过程中发挥重要作用。研究发现, 催产素与恐惧习得和恐惧消退过程密切相关。恐惧习得过程中, 催产素影响杏仁核、背侧前扣带回的活动, 影响杏仁核与背侧前扣带回和脑干间的功能连接, 促进或抑制恐惧习得过程; 恐惧消退过程中, 催产素影响了杏仁核和腹内侧前额叶的活动, 并且影响杏仁核与内侧前额叶和海马间的功能连接, 促进或抑制恐惧消退过程。未来研究应从性别差异、神经网络模型、身心发育和病理研究等角度展开, 力图深入理解催产素影响恐惧情绪加工的认知神经机制。

关键词: 催产素, 恐惧习得, 恐惧消退, 杏仁核, 腹内侧前额叶

Abstract:

Fear is a biologically adaptive response to environmental threats, and fear learning plays a key role in adaptive function. However, maladaptive fear learning underlies emotional disorders, such as anxiety and posttraumatic stress disorder (PTSD). Together with the development of cognitive neuroscience and the integration of multidisciplinary research, the study on the cognitive neural mechanism of fear has become a hot topic in the field of emotion. Using the classical fear conditioning paradigm, researchers have identified the brain circuits of fear learning and extinction. Specifically, extensive imaging researches have revealed several key regions involved in fear acquisition, including the amygdala, insula, dorsal anterior cingulate (dACC) and thalamus. Moreover, the amygdala, hippocampus and ventromedial prefrontal cortex (vmPFC) served key roles in fear memory consolidation and reconsolidation, and the amygdala, hippocampus, vmPFC, and dACC are required for fear extinction. Cumulative evidence has suggested that oxytocin plays a crucial role in the process of fear acquisition, fear consolidation and fear extinction. Therefore, firstly, we summarized the paradigms of fear acquisition and fear extinction as well as the cognitive neural mechanisms of fear acquisition and fear extinction based on the fingdings of corresponding meta-analyses. Secondly, we focused on the cognitive neural mechanisms underlying the impact of oxytocin on fear acquisition and fear extinction. Next, we summarized the neurobiological circuits of oxytocin influence on fear emotion processing. Finally, we prospected the future researches on the cognitive neural mechanisms underlying the impact of oxytocin on fear processing. The present study sheds insights into the cognitive neural mechanisms underlying the impact of oxytocin on fear processing. Moreover, the present study provides an potential treatment for the fear-related disorders.

Oxytocin has been shown to facilitate fear acquisition as it affects brain activity in several regions including amygdala, prefrontal cortex, anterior cingulate gyrus, insula and hippocampus, as well as the functional connectivity between them. Oxytocin also enhances fear extinction by regulating amygdala and medial prefrontal cortex activity, as well as enhancing the functional connectivity between prefrontal cortex and amygdala. Furthermore, oxytocin can regulate the activity of the amygdala, anterior cingulate gyrus, insula, hippocampus, vmPFC and other fear-related brain regions, thus affecting the processes of fear acquisition and extinction. Specifically, cumulative evidence has indicated that intranasal oxytocin attenuates amygdala (hyper)activity and enhances functional coupling of the amygdala with the vmPFC and hippocampus, resulting in increased top-down control over the fear response. In addition, intranasal oxytocin has also been found to attenuate amygdala—brainstem connectivity and to change activity and connectivity in nodes of the salience network (i.e., insula and dACC). Furthermore, oxytocin administration may enhance social behavior through modulating the hypothalamus—pituitary—adrenal (HPA) axis and autonomic nervous system (ANS) function, which may provide a potential treatment for the fear-related disorders. However, it should be noted that the dose, time and location of oxytocin injection might have different effects on the processes of fear acquisition and extinction.

Future studies should focus on gender differences, neural network underlying the impact of oxytocin on fear consolidation and reconsolidation and the pathological study examining oxytocin effect on fear emotion processing to better reveal the cognitive neural mechanisms underlying the impact of oxytocin on.

Key words: oxytocin, fear acquisition, fear extinction, amygdala, vmPFC

中图分类号: