Abstract
Somatosensory evoked potentials imply that digital inputs are converted into analog outputs. Eye tracking movements analyses reveal that sinusoidal inputs are turned into outputs of saccadic or square waves. Common denominators in these two experiments are considered to lie in the fact that the central nervous system has capability of transforming various stimuli into separate responses.
These two electrophysiological events in normal persons make it possible to establish the concept of transactional function in the normal central nervous system, and review the several central disorders from this transactional view point.
Applying these electrophysiological investigation to cerebral palsied patients, and assuming this transactional view point, authors came to conclude that cerebral palsy should be correctley defined as defect or aberration of transactional function in the central nervous system, and traditional definition of cerebral palsy as dysfunction in motor system must be supplemented.
Authors are of opinion that various therapeutic approaches to cerebral palsy should be criticised from transactional view point and this view is also applicable to other centrally induced disorders.
