To interact successfully with an uncertain environment, organisms must be able to respond
to both unanticipated and anticipated events. For unanticipated events, organisms have …

Impaired balance is a major contributor to falls and diminished quality of life in Parkinson's
disease, yet the pathophysiology is poorly understood. Here, we assessed if patients with …

The question of how the inverted position of a pendulum can be stabilized is of fundamental
importance for understanding human balancing tasks. Applications range from postural …

Postural sway is a result of a complex action–reaction feedback mechanism generated by
the interplay between the environment, the sensory perception, the neural system and the …

Limit cycle oscillations (LCOs) are a hallmark of dynamic instability in time-delayed and
nonlinear systems such as climate change models, biological oscillators, and robotics. Here …

The causes of falling in the elderly are multi-factorial. Three factors that influence balance
stability are the time delay, a sensory dead zone and the maximum ankle torque that can be …

Balance control models are used to describe balance behavior in health and disease. We
identified the unique contribution and relative importance of each parameter of a commonly …

We present Intermittent Control (IC) models as a candidate framework for modelling human
input movements in Human–Computer Interaction (HCI). IC differs from continuous control in …

In systems where the ability to actuate is a scarce resource, eg, spacecrafts, it is desirable to
only apply a given controller in an intermittent manner—with periods where the controller is …

Birhythmicity is evident in many nonlinear systems, which include physical and biological
systems. In some living systems, birhythmicity is necessary for response to the varying …