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Related Concept Videos

Facial Feedback Hypothesis01:24

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Charles Darwin proposed that facial expressions are an evolutionary adaptation for communication. He argued that these expressions are not influenced by culture but are universal across species. For example, a snarling expression with exposed teeth signals a threat in many animals, including humans. Darwin also suggested that displaying an emotion can intensify the feeling. Smiling, for example, could enhance one's sense of happiness. This idea laid the foundation for understanding the role...
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Correlating Behavioral Responses to fMRI Signals from Human Prefrontal Cortex: Examining Cognitive Processes Using Task Analysis
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Angry and happy expressions affect forward gait initiation only when task relevant.

Giovanni Mirabella1, Michele Grassi2, Susanna Mezzarobba3

  • 1Department of Clinical and Experimental Sciences.

Emotion (Washington, D.C.)
|May 19, 2022
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Summary
This summary is machine-generated.

Emotional facial expressions like anger and happiness only affect whole-body movement initiation when task-relevant. Conscious appraisal, not automatic processing, determines behavioral responses to emotional stimuli.

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Area of Science:

  • Cognitive Psychology
  • Neuroscience
  • Human Movement Science

Background:

  • Whole-body movements offer an ecologically valid way to study emotional stimuli's impact on approach/avoidance reactions.
  • Previous research yielded inconsistent results due to uncontrolled task relevance and difficulty dissociating valence from arousal.
  • Existing studies often fail to isolate the valence effect from arousal in emotional stimulus response.

Purpose of the Study:

  • To investigate the influence of facial emotional expressions (anger, happiness) on forward gait initiation.
  • To compare the impact of emotional stimuli when task-relevant versus task-irrelevant using a novel experimental paradigm.
  • To determine if emotional stimuli automatically influence behavioral responses or depend on conscious appraisal.

Main Methods:

  • Utilized an experimental paradigm to assess forward gait initiation in response to facial emotional expressions.
  • Manipulated the task relevance of emotional stimuli (angry vs. happy faces) as go signals.
  • Measured gait initiation parameters, including reaction times and omission errors.

Main Results:

  • Angry and happy facial expressions differentially altered forward gait initiation parameters exclusively when they were task-relevant.
  • Reaction times and omission errors increased significantly when the go signal was an angry face compared to a happy face.
  • No significant differences were observed when emotional stimuli were task-irrelevant.

Conclusions:

  • Forward step movements, like arm movements, are not automatically influenced by facial emotions.
  • The behavioral impact of emotional stimuli critically depends on their conscious appraisal within the context of ongoing goals.
  • Findings highlight the role of cognitive evaluation in modulating emotional influences on motor behavior.