A method and apparatus for the diagnosis and rehabilitation of abnormal
human balance corrections. A subject is placed in a standing position on a
support surface which can be moved in any combination of pitch and roll
directions. Measurements of the balance response of the subject are made
using, e.g., force transducers in the support surface (to measure changes
in center-of-foot pressure or ankle torque), body sway sensors, such as
velocity transducers, mounted on the subject's body (to measure body
sway), and EMG electrodes, mounted over muscles on the left and right
sides of the subject's body (to measure the electromyographic response of
the subject's muscles). The response measures are displayed to an operator
in a highly readable form along with response measures from a normal
sample population. From the display of response measures, an operator or
the system may diagnose the existence, cause (e.g., vestibular,
proprioceptive, CNS lesion, or aphysiologic), and side (left or right) of
a balance correction abnormality. Response measure information may be
provided as feedback to the test subject in visual, auditory, tactile, or
electro-vestibular form. A destabilizing virtual reality visual response
measure feedback image may be provided using an imaging system mounted on
a pair of light excluding eyewear.