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Subliminal Impending Collision Increases Perceived Object Size and Enhances Pupillary Light Reflex
Chen, Lihong1,2; Yuan, Xiangyong1; Xu, Qian1,2; Wang, Ying1; Jiang, Yi1,2
2016-12-02
Source PublicationFrontiers in Psychology
ISSN1664-1078
SubtypeArticle
Volume7Issue:0Pages:1-8
Abstract

Fast detection of ambient danger is crucial for the survival of biological entities. Previous studies have shown that threatening information can bias human visual perception and enhance physiological reactions. It remains to be delineated whether the modulation of threat on human perceptual and physiological responses can take place below awareness. To probe this issue, we adopted visual looming stimuli and created two levels of threat by varying their motion trajectories to the observers, such that the stimuli could move in a path that either collided with the observers heads or just nearly missed. We found that when the observers could not explicitly discriminate any difference between the collision and the near-miss stimuli, the visual stimuli on the collision course appeared larger and evoked greater pupil constrictions than those on the near-miss course. Furthermore, the magnitude of size overestimation was comparable to when the impending collision was consciously perceived. Our findings suggest that threatening information can bias human visual perception and strengthen pupil constrictions independent of conscious representation of the threat, and imply the existence of the subcortical visual pathway dedicated to automatically processing threat-related signals in humans.

Keywordthreat looming size perception pupillary light reflex awareness
DOI10.3389/fpsyg.2016.01897
Indexed BySSCI
Language英语
Funding OrganizationStrategic Priority Research Program of the Chinese Academy of Sciences(XDB02010003) ; National Natural Science Foundation of China(31100733 ; 31525011)
WOS Research AreaPsychology
WOS SubjectPsychology, Multidisciplinary
WOS IDWOS:000389151900001
WOS HeadingsSocial Sciences
WOS KeywordLOOMING VISUAL-STIMULI ; FACIAL EXPRESSIONS ; BINOCULAR-RIVALRY ; PERCEPTION ; RESPONSES ; THREAT ; AWARENESS ; FEAR ; ATTENTION ; BIAS
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.psych.ac.cn/handle/311026/20943
Collection脑与认知科学国家重点实验室
Affiliation1.Chinese Acad Sci, Inst Psychol, CAS Ctr Excellence Brain Sci & Intelligence Techn, State Key Lab Brain & Cognit Sci, Beijing, Peoples R China
2.Univ Chinese Acad Sci, Beijing, Peoples R China
Recommended Citation
GB/T 7714
Chen, Lihong,Yuan, Xiangyong,Xu, Qian,et al. Subliminal Impending Collision Increases Perceived Object Size and Enhances Pupillary Light Reflex[J]. Frontiers in Psychology,2016,7(0):1-8.
APA Chen, Lihong,Yuan, Xiangyong,Xu, Qian,Wang, Ying,&Jiang, Yi.(2016).Subliminal Impending Collision Increases Perceived Object Size and Enhances Pupillary Light Reflex.Frontiers in Psychology,7(0),1-8.
MLA Chen, Lihong,et al."Subliminal Impending Collision Increases Perceived Object Size and Enhances Pupillary Light Reflex".Frontiers in Psychology 7.0(2016):1-8.
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