251. Impaired early visual categorization of fear in social anxiety
- Author
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Jessica Simon, Kevin Clancy, Zijun Ke, Wei Wu, Melissa Meynadasy, and Wen Li
- Subjects
Adult ,Male ,Adolescent ,genetic structures ,Concept Formation ,Cognitive Neuroscience ,media_common.quotation_subject ,Experimental and Cognitive Psychology ,Anxiety ,Article ,050105 experimental psychology ,Young Adult ,03 medical and health sciences ,0302 clinical medicine ,Developmental Neuroscience ,Perception ,Emotion perception ,Reaction Time ,medicine ,Humans ,0501 psychology and cognitive sciences ,Evoked Potentials ,Biological Psychiatry ,media_common ,Cognitive vulnerability ,Categorical perception ,Endocrine and Autonomic Systems ,General Neuroscience ,05 social sciences ,Social anxiety ,Electroencephalography ,Cognition ,Fear ,Facial Expression ,Neuropsychology and Physiological Psychology ,Social Perception ,Neurology ,Categorization ,Female ,medicine.symptom ,Psychology ,Facial Recognition ,030217 neurology & neurosurgery ,Personality ,Cognitive psychology - Abstract
Social anxiety is associated with biased social perception, especially of ambiguous cues. While aberrations in high-level processes (e.g., cognitive appraisal and interpretation) have been implicated in such biases, contributions of early, low-level stimulus processing remain unclear. Categorical perception represents an efficient process to resolve signal ambiguity, and categorical emotion perception can swiftly classify sensory input, “tagging” biologically important stimuli at early stages of processing to facilitate ecological response. However, early threat categorization could be disrupted by exaggerated (or disinhibited) threat processing in anxiety, resulting in biased perception of ambiguous signals. We tested this hypothesis among individuals with low and high trait social anxiety (LSA/HSA; defined relative to the current sample), who performed a 2-alternative-forced-choice (fear or neutral) task on facial expressions parametrically varied along a neutral-fear continuum. The groups diverged in the reaction time (RT) profile along the neutral-fear continuum, which was characteristic of categorical perception in the LSA (vs. HSA) group with drastically increased RT from neutral to intermediate (boundary) fear intensities, contrasting monotonic, non significant RT changes in the HSA group. Neurometric analysis along the continuum identified an early neutral-fear categorization operation (arising in the P1, an early visual event-related potential/ERP at 100 ms), which was nonetheless impaired in the HSA group (due to disinhibited response at the neutral-fear boundary). Absent group differences in higher-level cognitive operations (identified by later ERPs), current findings highlight a dispositional cognitive vulnerability in early visual categorization of social threat, which could precipitate further cognitive aberrations and, eventually, the onset of social anxiety disorder.
- Published
- 2019