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Decomposing Fear Perception

Title: Decomposing Fear Perception.
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Name(s): Forscher, Emily C., author
Zheng, Yan, author
Ke, Zijun, author
Folstein, Jonathan, author
Li, Wen, author
Type of Resource: text
Genre: Text
Date Issued: 2016-10
Physical Form: computer
online resource
Extent: 1 online resource
Language(s): English
Abstract/Description: Emotion perception is known to involve multiple operations and waves of analysis, but specific nature of these processes remains poorly understood. Combining psychophysical testing and neurometric analysis of event-related potentials (ERPs) in a fear detection task with parametrically varied fear intensities (N=45), we sought to elucidate key processes in fear perception. Building on psychophysics marking fear perception thresholds, our neurometric model fitting identified several putative operations and stages: four key processes arose in sequence following face presentation - fear-neutral categorization (P1 at 100 ms), fear detection (P300 at 320 ms), valuation (early subcomponent of the late positive potential/LPP at 400-500 ms) and conscious awareness (late subcomponent LPP at 500-600 ms). Furthermore, within-subject brain-behavior association suggests that initial emotion categorization was mandatory and detached from behavior whereas valuation and conscious awareness directly impacted behavioral outcome (explaining 17% and 31% of the total variance, respectively). The current study thus reveals the chronometry of fear perception, ascribing psychological meaning to distinct underlying processes. The combination of early categorization and late valuation of fear reconciles conflicting (categorical versus dimensional) emotion accounts, lending support to a hybrid model. Importantly, future research could specifically interrogate these psychological processes in various behaviors and psychopathologies (e.g., anxiety and depression). (C) 2016 Elsevier Ltd. All rights reserved.
Identifier: FSU_libsubv1_wos_000387194200021 (IID), 10.1016/j.neuropsychologia.2016.08.018 (DOI)
Keywords: brain, conscious perception, emotional stimuli, ERPs, event-related potentials, facial expression, Fear perception, human amygdala, mechanisms, Model fitting, neural response, Neurometrics, psychometric function, Psychophysics, visual-cortex
Publication Note: The publisher's version of record is available at https://doi.org/10.1016/j.neuropsychologia.2016.08.018
Persistent Link to This Record: http://purl.flvc.org/fsu/fd/FSU_libsubv1_wos_000387194200021
Host Institution: FSU
Is Part Of: Neuropsychologia.
0028-3932
Issue: vol. 91

Choose the citation style.
Forscher, E. C., Zheng, Y., Ke, Z., Folstein, J., & Li, W. (2016). Decomposing Fear Perception. Neuropsychologia. Retrieved from http://purl.flvc.org/fsu/fd/FSU_libsubv1_wos_000387194200021