Abstract: 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.

Abstract: A method and apparatus for the diagnosis and rehabilitation of abnormal postural sway of a subject during standing or the performance of movement tasks is provided. Body sway sensors, such as angular velocity transducers, are attached to the body, such as the upper torso, of the subject. Output signals from the body sway sensors are transformed into detailed body sway angular displacement and velocity information by a system processor. The body sway angular displacement and velocity information may be displayed to an operator for diagnosis of the subject's balance or gait disorders. The angular displacement and velocity information may also be provided as feedback to the subject, to augment the signals normally used by the subject's brain to help stabilize body sway and improve balance. Rehabilitory feedback may be in visual, auditory, and/or tactile form, and/or in the form of electrical stimulation of the vestibular nerve.