Social vision: sustained perceptual enhancement of affective facial cues in social anxiety.

Abstract:

:Heightened perception of facial cues is at the core of many theories of social behavior and its disorders. In the present study, we continuously measured electrocortical dynamics in human visual cortex, as evoked by happy, neutral, fearful, and angry faces. Thirty-seven participants endorsing high versus low generalized social anxiety (upper and lower tertiles of 2104 screened undergraduates) viewed naturalistic faces flickering at 17.5 Hz to evoke steady-state visual evoked potentials (ssVEPs), recorded from 129 scalp electrodes. Electrophysiological data were evaluated in the time-frequency domain after linear source space projection using the minimum norm method. Source estimation indicated an early visual cortical origin of the face-evoked ssVEP, which showed sustained amplitude enhancement for emotional expressions specifically in individuals with pervasive social anxiety. Participants in the low symptom group showed no such sensitivity, and a correlational analysis across the entire sample revealed a strong relationship between self-reported interpersonal anxiety/avoidance and enhanced visual cortical response amplitude for emotional, versus neutral expressions. This pattern was maintained across the 3500 ms viewing epoch, suggesting that temporally sustained, heightened perceptual bias towards affective facial cues is associated with generalized social anxiety.

journal_name

Neuroimage

journal_title

NeuroImage

authors

McTeague LM,Shumen JR,Wieser MJ,Lang PJ,Keil A

doi

10.1016/j.neuroimage.2010.08.080

subject

Has Abstract

pub_date

2011-01-15 00:00:00

pages

1615-24

issue

2

eissn

1053-8119

issn

1095-9572

pii

S1053-8119(10)01183-3

journal_volume

54

pub_type

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