What Researchers Found
Researchers [1] studying women undergoing Botox treatment found that the treatment of Botox which essentially paralyzes the muscles, seem to slow a person's ability to comprehend emotional language. That is, we need to perform the physical emotion through our facial muscles to convey to our brain the correct interpretation of what is being felt and said. This compliments earlier research showing that mimicking emotional expression triggers a matching emotional response. [2]
What is this Research and What does it Prove?
Such findings have raised the question of whether emotional expression is itself necessary for fluid processing of emotional language. In the new study researchers investigated whether temporarily paralyzing the corrugator muscle (that muscle that spreads above the nose and across the brow, responsible for the parallel, vertical furrows one sees there) blocked people's ability to process negative emotional language as it prevented one from frowning.

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