Social anxiety modulating early processing for social threat words: an ERP study

Area of Science:

• Cognitive Neuroscience
• Clinical Psychology
• Social Psychology

Background:

• Individuals with high social anxiety (HSA) exhibit hypervigilance and vulnerability to negative stimuli.
• Previous research suggests enhanced early emotional information processing in HSA.
• The precise temporal dynamics of processing biases for emotional stimuli in social anxiety remain unclear.

Purpose of the Study:

• To investigate the early processing of social threat stimuli in individuals with high social anxiety (HSA).
• To explore the influence of social anxiety on the time course of processing biases for emotional stimuli.
• To elucidate the neural mechanisms underlying early emotional processing in social anxiety.

Main Methods:

• Utilized the emotional Stroop task to assess processing of social threat and neutral words.
• Recorded behavioral data, including reaction times (RTs).
• Employed electroencephalography (EEG) to capture event-related potentials (ERPs), specifically P1 and N170 components.

Main Results:

• Behavioral data: HSA group responded faster to threat words than neutral words (negative bias); no emotional effect observed in the low social anxiety (LSA) group.
• EEG data: Enhanced N170 component observed in the HSA group compared to the LSA group.
• N170 analysis: Threat words elicited larger N170 in the LSA group only; this emotion effect was absent in the HSA group.

Conclusions:

• Social anxiety significantly modulates the early neural processing of social threat words.
• Findings reveal distinct neural mechanisms for early emotional processing in individuals with varying levels of social anxiety.
• Provides crucial insights for the evaluation and potential intervention strategies for social anxiety disorder.