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Parallel processing of general and specific threat during early stages of perception.

Title: Parallel processing of general and specific threat during early stages of perception.
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Name(s): You, Yuqi, author
Li, Wen, author
Type of Resource: text
Genre: Journal Article
Text
Date Issued: 2016-03-01
Physical Form: computer
online resource
Extent: 1 online resource
Language(s): English
Abstract/Description: Differential processing of threat can consummate as early as 100 ms post-stimulus. Moreover, early perception not only differentiates threat from non-threat stimuli but also distinguishes among discrete threat subtypes (e.g. fear, disgust and anger). Combining spatial-frequency-filtered images of fear, disgust and neutral scenes with high-density event-related potentials and intracranial source estimation, we investigated the neural underpinnings of general and specific threat processing in early stages of perception. Conveyed in low spatial frequencies, fear and disgust images evoked convergent visual responses with similarly enhanced N1 potentials and dorsal visual (middle temporal gyrus) cortical activity (relative to neutral cues; peaking at 156 ms). Nevertheless, conveyed in high spatial frequencies, fear and disgust elicited divergent visual responses, with fear enhancing and disgust suppressing P1 potentials and ventral visual (occipital fusiform) cortical activity (peaking at 121 ms). Therefore, general and specific threat processing operates in parallel in early perception, with the ventral visual pathway engaged in specific processing of discrete threats and the dorsal visual pathway in general threat processing. Furthermore, selectively tuned to distinctive spatial-frequency channels and visual pathways, these parallel processes underpin dimensional and categorical threat characterization, promoting efficient threat response. These findings thus lend support to hybrid models of emotion.
Identifier: FSU_pmch_26412811 (IID), 10.1093/scan/nsv123 (DOI), PMC4769625 (PMCID), 26412811 (RID), 26412811 (EID), nsv123 (PII)
Keywords: Amygdala, Sensory, Spatial frequency, Threat encoding, Visual cortex
Grant Number: R01 MH093413, R01MH093413
Publication Note: This NIH-funded author manuscript originally appeared in PubMed Central at https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4769625.
Subject(s): Anger
Cues
Evoked Potentials/physiology
Fear/psychology
Female
Humans
Magnetic Resonance Imaging
Male
Mental Processes/physiology
Occipital Lobe/physiology
Perception/physiology
Psychomotor Performance/physiology
Temporal Lobe/physiology
Visual Pathways/physiology
Visual Perception
Young Adult
Persistent Link to This Record: http://purl.flvc.org/fsu/fd/FSU_pmch_26412811
Owner Institution: FSU
Is Part Of: Social cognitive and affective neuroscience.
1749-5024
Issue: iss. 3, vol. 11

Choose the citation style.
You, Y., & Li, W. (2016). Parallel processing of general and specific threat during early stages of perception. Social Cognitive And Affective Neuroscience. Retrieved from http://purl.flvc.org/fsu/fd/FSU_pmch_26412811