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Facial expression

Facial feedback hypothesis - Wikipedia
The psychology of facial expression 1 ed. These expressions originate from the extrapyramidal motor system , which involves subcortical nuclei. Specifically, physiological activation of the facial regions associated with certain emotions holds a direct effect on the elicitation of such emotional states, and the lack of or inhibition of facial activation will result in the suppression or absence altogether of corresponding emotional states [1]. Strack, Martin, and Stepper pioneered a technique in which researchers were able to measure the effect of the actions of smiling and frowning on affect through inducing such expressions in an undetectable manner to the participant, offering a supposed level of control not yet before utilized in similar studies.

Facial feedback hypothesis
Description: April Recently, strong experimental support for a facial feedback mechanism is provided through the use of botulinum toxin commonly known as Botox to temporarily paralyze facial muscles. For this reason, genuine emotions are not associated with the cortex and are often displayed unconsciously. It is believed that the emotion disgust is recognized through activation of the insula and basal ganglia.
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Date: 24.07.2019
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