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. 2012 Mar 30;7(3):e32413. doi: 10.1371/journal.pone.0032413

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Reynaud et al.

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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Plot of the correlation indices between increasing left corrugator frowning muscle activity for fear-induced emotion and higher neuroticism scores on NEO PI-R.