Fig. 2: Computer vision analysis of head angle during periods of face-forward. | npj Digital Medicine

Fig. 2: Computer vision analysis of head angle during periods of face-forward.

From: Head movement dynamics in dystonia: a multi-centre retrospective study using visual perceptive deep learning

Fig. 2: Computer vision analysis of head angle during periods of face-forward.

a 2-D histograms for comparing video derived head-angle (absolute angle) and clinically assigned TWSTRS scores for each axis of motion. b Box plots showing (absolute) pre- (grey) and post- (purple) operative angles, for each axes of movement. Median and interquartile ranges are displayed in each plot. c Like (b) but patients are separated into their dominant phenotypes, i.e., their dominant axis of deviation from face-forward. d Scatter plot showing correlation of predicted pre- and post-operative head angles for each movement axis. e Scatter plots correlating each pair of axes of motion for (i) patients and (ii) healthy controls, for pre- and post-op combined. All subplots used N = 86. Correlations were Pearson r tests. Group tests were Mann–Whitney U-tests: *p < 0.05; **p < 0.01; ***p < 0.001.

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