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Advances in Psychological Science    2015, Vol. 23 Issue (8) : 1418-1427     DOI: 10.3724/SP.J.1042.2015.01418
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The Biological Basis of Social Anxiety: Evidence of Physiology, #br# Inheritance and Evolution
JING Yaqin1; HE Siqi1; HE Jinbo1,2; ZHOU Lingling1; LI Jing1
(1 Key Laboratory of Adolescent Cyberpsychology and Behavior (CCNU), Ministry of Education;
Key Laboratory of Human Development and Mental Health of Hubei Province; School of Psychology, Central China Normal University, Wuhan 430079, China) (2Research Center of sports psychology, Wuhan Institute of Physical Education, Wuhan, 430079)
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Abstract  

Biological basis of social anxiety contained three correlated levels which were physiological reaction, hereditary association and evolutionary explanation. In terms of physiological reaction, social anxiety illustrated men had different characteristics in the three stages of expression. In the earlier identification stage, men had intensive alarm reaction to the expression of all types. The specific performance P1 was enlarged. The activation in bilateral occipital area was enhanced. In the mid-term awareness stage which was only sensitive to anger expression. The specific performance P2 was also enlarged. The activation of amygdala and cingulated cortex was enhanced. In the late reaction stage which had noticeable negative expression process bias. The specific performance of the later period ERPs, P3 was enlarged. The activation of frontal lobe enhanced caused the connection between central nervous system such as cingulo-opercular network and amygdale weakened. In hereditary association, social anxiety had the genetic phenomenon of parent-offspring transmission and high correlation. Besides that, it related to some genes such as 5-HTT, MAO-A, BDNF and DRD2. In evolutionary explanation, social anxiety was regarded as natural response and defense mechanism to social threat which could activate arousal levels which improved and helped the individual to mobilize the body respond to the threat. In addition, it could also impress the opposite sex to get mates which could increase the popularity of individual in groups which could help the individual get more chances of development.

Keywords social anxiety      physiological reaction      hereditary association      evolutionary explanation     
Corresponding Authors: HE Jinbo, E-mail: hjb@mail.ccnu.edu.cn   
Issue Date: 15 August 2015
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JING Yaqin
HE Siqi
HE Jinbo
ZHOU Lingling
LI Jing
Cite this article:   
JING Yaqin,HE Siqi,HE Jinbo, et al. The Biological Basis of Social Anxiety: Evidence of Physiology, #br# Inheritance and Evolution[J]. Advances in Psychological Science, 2015, 23(8): 1418-1427.
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http://journal.psych.ac.cn/xlkxjz/EN/10.3724/SP.J.1042.2015.01418     OR     http://journal.psych.ac.cn/xlkxjz/EN/Y2015/V23/I8/1418
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