Slow echo: facial EMG evidence for the delay of spontaneous, but not voluntary, emotional mimicry in children with autism spectrum disorders.

@article{Oberman2009SlowEF,
  title={Slow echo: facial EMG evidence for the delay of spontaneous, but not voluntary, emotional mimicry in children with autism spectrum disorders.},
  author={Lindsay M. Oberman and Piotr Winkielman and Vilayanur S. Ramachandran},
  journal={Developmental science},
  year={2009},
  volume={12 4},
  pages={
          510-20
        }
}
Spontaneous mimicry, including that of emotional facial expressions, is important for socio-emotional skills such as empathy and communication. Those skills are often impacted in autism spectrum disorders (ASD). Successful mimicry requires not only the activation of the response, but also its appropriate speed. Yet, previous studies examined ASD differences in only response magnitude. The current study investigated timing and magnitude of spontaneous and voluntary mimicry in ASD children and… 

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References

SHOWING 1-10 OF 83 REFERENCES
When the social mirror breaks: deficits in automatic, but not voluntary, mimicry of emotional facial expressions in autism.
TLDR
The data suggest that autism is associated with an impairment of a basic automatic social-emotion process, including establishment of interpersonal rapport and understanding of other minds, in disorders such as autism characterized by socio-emotional and communicative deficits.
Facial electromyographic responses to emotional information from faces and voices in individuals with pervasive developmental disorder.
TLDR
This study provides evidence for enhanced sensitivity to facial cues at the level of reflex-like emotional responses in individuals with PDD and argues against impairments in crossmodal affect processing at this level of perception.
The psychophysiology of disgust: differentiating negative emotional contexts with facial EMG.
TLDR
Heart rate acceleration was greater during disgust, anger, and joy imagery than during pleasant imagery, and the expressive physiology of disgust was occasioned by the action set of active avoidance or rejection of sensory stimulation.
EEG evidence for mirror neuron dysfunction in autism spectrum disorders.
Face to face: Blocking facial mimicry can selectively impair recognition of emotional expressions
TLDR
It is suggested that facial mimicry differentially contributes to recognition of specific facial expressions, thus allowing for more refined predictions from embodied cognition theories.
Facial reactions to emotional stimuli: Automatically controlled emotional responses
Based on a model in which the facial muscles can be both automatically/involuntarily controlled and voluntarily controlled by conscious processes, we explore whether spontaneously evoked facial
Facial Feedback Mechanisms in Autistic Spectrum Disorders
TLDR
Individuals with ASD do not experience feedback from activated facial expressions as controls do, and this facial feedback-impairment enhances the understanding of the social and emotional lives of individuals with ASD.
Abnormal imitation‐related cortical activation sequences in Asperger's syndrome
TLDR
The observed abnormal premotor and motor processing could account for a part of imitation and social impairments in subjects with Asperger's syndrome.
...
...