New Study: Botox Affects Emotions

A new study shows that the use of Botox (botulinum toxin-A) affects the processing of emotional language.  That's right, not only does Botox make one look emotionless, but actually alters one's feeling of emotion.  The study by Havas et al at the University of Wisconsin-Madison looked at facial expressions of botox patients as they read phrases containing emotional language.  The researchers found that reading of the phrases was slowed when utilizing muscles that normally show emotion.  This suggests a causal feedback link between emotion and involuntary facial expression.  Specifically, the authors "account for the role of facial feedback in language processing by considering neurophysiological mechanisms and reinforcement-learning theory."

Physiological Science

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