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Related Experiment Videos

Facial electromyographic responses to vocal affect expressions

J K Hietanen1, V Surakka, I Linnankoski

  • 1Department of Physiology, University of Helsinki, Finland. psjahi@uta.fi

Psychophysiology
|August 26, 1998
PubMed
Summary

Hearing vocal affect expressions triggers facial muscle activity and influences approach-withdrawal tendencies. Emotional contagion (EC) modulates these responses, indicating that emotions like anger and contentment are contagious through vocal cues.

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Area of Science:

  • Psychology
  • Neuroscience
  • Social Psychology

Background:

  • Vocal affect expressions are crucial for social communication.
  • Understanding the link between auditory emotional stimuli and physiological/behavioral responses is key to social cognition.

Purpose of the Study:

  • To investigate facial electromyographic (EMG) responses to vocal affect expressions.
  • To measure emotion-related action tendencies (approach/withdrawal) in response to vocal affect.
  • To assess the role of emotional contagion (EC) in modulating these responses.

Main Methods:

  • Facial electromyography (EMG) to measure muscle activity.
  • Self-report measures for approach-withdrawal tendencies.
  • Questionnaire-based scale for emotional contagion (EC).

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Main Results:

  • Anger expressions increased brow EMG activity; contentment activated periocular regions.
  • Anger elicited withdrawal tendencies; neutral and contentment expressions evoked approach tendencies.
  • Individual differences in EC correlated with distinct EMG response patterns.

Conclusions:

  • Vocal affect expressions elicit specific facial EMG patterns and action tendencies.
  • Emotional contagion influences the processing of vocal affect.
  • Emotions are contagious through auditory perception of human vocalizations.