A force platform that evaluates somatosensory and visual influences on posture and equilibrium.

Analysis of postural responses with a force platform. Pressure evoked (postural) destabilization (PED) test A test whereby air pressure is applied to the external auditory canal with the patient standing freely. It is positive if the patient loses stability. It is usually indicative of hyperactive labyrinthine dysfunction originating in an otolith organ.

Posturography is a general term that covers all the techniques used to quantify postural control in upright stance in either static or dynamic conditions. Among them, Computerized dynamic posturography (CDP), also called test of balance (TOB), is a non-invasive specialized clinical assessment technique used to quantify the central nervous system adaptive mechanisms (sensory, motor and central) involved in the control of posture and balance, both in normal (such as in physical education and sports training) and abnormal conditions (particularly in the diagnosis of balance disorders and in physical therapy and postural re-education). Due to the complex interactions among sensory, motor, and central processes involved in posture and balance, CDP requires different protocols in order to differentiate among the many defects and impairments which may affect the patient's posture control system.