What does head movement tell about the minimum number of mechanical degrees of freedom in quiet human stance?

Phase synchronisation of the three leg joints in quiet human stance

(2011) Michael Günther et al.   GAIT & POSTURE

Watching quiet human stance to shake off its straitjacket

(2010) Michael Günther et al.   ARCHIVE OF APPLIED MECHANICS

A simple new device to examine human stance: the totter-slab

(2010) Robin Roth et al.   Biomedical Engineering-Biomedizinische Technik

Diverging times in movement analysis

(2009) Susanne W. Lipfert et al.   JOURNAL OF BIOMECHANICS

All leg joints contribute to quiet human stance: A mechanical analysis

(2009) Michael Günther et al.   JOURNAL OF BIOMECHANICS

The inverted pendulum model of bipedal standing cannot be stabilized through direct feedback of force and contractile element length and velocity at realistic series elastic element stiffness

(2008) A. J. “Knoek” van Soest et al.   BIOLOGICAL CYBERNETICS

Identification of the Plant for Upright Stance in Humans: Multiple Movement Patterns From a Single Neural Strategy

(2008) Tim Kiemel et al.   JOURNAL OF NEUROPHYSIOLOGY

Effect of the hip motion on the body kinematics in the sagittal plane during human quiet standing

(2008) Shun Sasagawa et al.   NEUROSCIENCE LETTERS

Transverse pelvic rotation during quiet human stance

(2007) Michael Günther et al.   GAIT & POSTURE