Fig. 3
From: Beat-aligned motor synergies and kinematic beat detection in street dance movements

The procedures for synergy computation using TD-PCA: 1. Dance movements are segmented in alignment with music beats. 2. PCA computations are performed on each slice of the collected segments at a normalized time point. 3. Kinematic beats are estimated with the activation of a motor synergy (principal component; PC), selected by cross validation, and subsequently assessed in terms of beat matching