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. 2021 Nov 17;11:22442. doi: 10.1038/s41598-021-01797-z

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© The Author(s) 2021

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Experiment 1. (A) Violin plots of % Dwell Time on the AOI of eyes and mouth. (B) Scatterplot of % dwell time in the AOIs. (C) The AOIs superimposed to the video image. (D) Example heatmap while singing a P4.