The pyramidal tract: two millions fibres in search of a function.
D000818:Animals; D001519:Behavior / Q000502:physiology; D006801:Humans; D007858:Learning / Q000502:physiology; D009068:Movement; D009482:Neurophysiology / Q000639:trends; D011187:Posture; D011712:Pyramidal Tracts / Q000033:anatomy & histology / Q000502:physiology*