Fig 4. Mirrored PCFE models capture key aspects of human joint improvised motion in the mirror game.
(a, b) Examples of JI rounds by human players from the data of Ref. [59]. Periods of co-confident motion (CC) are in gray boxes. (c) PC model simulation converges to synchrony and does not exit it. Here f1(0) = f2(0) = 0, k1 = k2 = 8, g1 = g2 = 0.5, v1(0) = 1 v2(0) = −1, A11(0) = 0.2, and all other initial amplitudes Aji(0) = 0. (d, e) Mirrored PCFE model dynamics show more complexity and realistic entry and exit from synchrony. Parameters of both mirrored PCFE equations are identical and equal to the best fit parameters found in the tracking experiment, except for (e) where β = 1 is used to describe a player dyad with lower exit-from-synchrony amplitude.