Temporal stability in dual rhythmic motor task

Most of the everyday human motor behavior belongs to the category of repetitive movements (e.g. cyclical locomotor behavior). Such oscillatory movements can be well described through periodicity, or in other words - regularity of timing. Research paradigm of interlimb coordination drawn from coordination dynamics and build on famous Haken Kelso Bunz model (HKB ; Haken et al., 1985) is most concerned with temporal and spatial organization of movement. HKB model, which basically capture the level of stability of the coordination pattern, anticipates two stable coordination modes, so called in-phase (PH ; limbs moves paralell) and anti-phase (APH ; limbs move opposite one from another).