Human Responses to Visually Evoked Threat

Vision is the primary sense humans use to evaluate and respond to threats. Understanding the biological underpinnings of the human threat response has been hindered by lack of realistic in-lab threat paradigms. We established an immersive virtual reality (VR) platform to simultaneously measure behav...

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Veröffentlicht in:Current biology 2021-02, Vol.31 (3), p.601-612.e3
Hauptverfasser: Yilmaz Balban, Melis, Cafaro, Erin, Saue-Fletcher, Lauren, Washington, Marlon J., Bijanzadeh, Maryam, Lee, A. Moses, Chang, Edward F., Huberman, Andrew D.
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container_end_page 612.e3
container_issue 3
container_start_page 601
container_title Current biology
container_volume 31
creator Yilmaz Balban, Melis
Cafaro, Erin
Saue-Fletcher, Lauren
Washington, Marlon J.
Bijanzadeh, Maryam
Lee, A. Moses
Chang, Edward F.
Huberman, Andrew D.
description Vision is the primary sense humans use to evaluate and respond to threats. Understanding the biological underpinnings of the human threat response has been hindered by lack of realistic in-lab threat paradigms. We established an immersive virtual reality (VR) platform to simultaneously measure behavior, physiological state, and neural activity from the human brain using chronically implanted electrodes. Subjects with high anxiety showed increased visual scanning in response to threats as compared to healthy controls. In both healthy and anxious subjects, the amount of scanning behavior correlated with the magnitude of physiological arousal, suggesting that visual scanning behavior is directly linked to internal state. Intracranial electroencephalography (iEEG) recordings from three subjects suggested that high-frequency gamma activity in the insula positively correlates with physiological arousal induced by visual threats and that low-frequency theta activity in the orbitofrontal cortex (OFC) negatively correlates with physiological arousal induced by visual threats. These findings reveal a key role of eye movements and suggest that distinct insula and OFC activation dynamics may be important for detecting and adjusting human stress in response to visually perceived threats. •Virtual reality heights trigger autonomic arousal and visual scanning in humans•Subjects with high trait anxiety display increased visual scanning to threats•Insula high gamma activity positively correlates with threat-triggered arousal•Orbitofrontal theta activity negatively correlates with threat-triggered arousal Yilmaz Balban et al. investigate human responses to visual threats using behavioral, physiological, and neural recordings. They demonstrate that exposure to virtual heights triggers visual scanning behavior proportional to the autonomic arousal response. Insula and orbitofrontal cortex show significant correlations with visually driven arousal.
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subjects Anxiety
Anxiety Disorders
Brain
eye movement
Eye Movements
human fear
Humans
insula
Prefrontal Cortex
virtual reality
Vision, Ocular
title Human Responses to Visually Evoked Threat
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