Biological psychology · 2026
Social anxiety and emotional body perception in context: Behavioral congruence effects with exploratory N170 interaction.
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Zhu Xinyi, Jin Jiajia, Sun Yuqi, Fan Lu
Аннотация
BACKGROUND: Emotional body postures are interpreted in relation to their contexts, but whether social anxiety is associated with altered contextual integration or selective differences across posture valences remains unclear.
METHODS: Two studies used related posture-context emotion-recognition paradigms. Study 1 examined recognition accuracy and reaction time for positive, neutral, and negative postures presented in positive, neutral, and negative contexts in 69 participants with high or low social anxiety (HSA/LSA). Study 2 explored P1, N170, and late positive potential responses to positive and negative postures presented alone or within positive or negative contexts in an independent EEG sample of 35 participants. Participant-level repeated-measures analyses of variance were conducted.
RESULTS: In Study 1, posture-context congruence improved recognition accuracy and response speed. The overall congruence benefit did not differ significantly between groups, but accuracy showed a Group × Posture Valence × Congruence interaction, indicating that group-dependent congruence patterns varied across posture valences. In Study 2, no reliable ERP congruence effect emerged. However, N170 amplitude during posture-context trials showed a Group × Posture Valence interaction, although multiplicity-adjusted follow-up comparisons did not identify a reliable condition-specific difference.
CONCLUSIONS: Posture-context congruence facilitates emotional-body recognition behaviorally. Social anxiety was not associated with a generalized disruption of contextual integration, but the interaction-level findings suggest selective, valence-related group differences. The N170 result offers an exploratory neural complement to this pattern but does not establish a specific perceptual mechanism.
METHODS: Two studies used related posture-context emotion-recognition paradigms. Study 1 examined recognition accuracy and reaction time for positive, neutral, and negative postures presented in positive, neutral, and negative contexts in 69 participants with high or low social anxiety (HSA/LSA). Study 2 explored P1, N170, and late positive potential responses to positive and negative postures presented alone or within positive or negative contexts in an independent EEG sample of 35 participants. Participant-level repeated-measures analyses of variance were conducted.
RESULTS: In Study 1, posture-context congruence improved recognition accuracy and response speed. The overall congruence benefit did not differ significantly between groups, but accuracy showed a Group × Posture Valence × Congruence interaction, indicating that group-dependent congruence patterns varied across posture valences. In Study 2, no reliable ERP congruence effect emerged. However, N170 amplitude during posture-context trials showed a Group × Posture Valence interaction, although multiplicity-adjusted follow-up comparisons did not identify a reliable condition-specific difference.
CONCLUSIONS: Posture-context congruence facilitates emotional-body recognition behaviorally. Social anxiety was not associated with a generalized disruption of contextual integration, but the interaction-level findings suggest selective, valence-related group differences. The N170 result offers an exploratory neural complement to this pattern but does not establish a specific perceptual mechanism.