Figure 4
From: Towards smart glasses for facial expression recognition using OMG and machine learning

Wilcoxon signed-rank (paired) test with Bonferroni correction for cheek and brow movements between expressions (eyebrow raise, frown, smile, and squeezed eyes) performed with and without head movement. Statistical significance annotations: *if p ∈ [0.05, 10−2); **if p ∈ [10−2, 10−3); ***if p ∈ [10−3, 10−4); and ****if p ≥ 10−4.