Although many reports have been made in the field of measuring the gravity center of the body, guantitative analysis could not be obtained by the conventional technigues. Recent advance in electrical technology made it possible to measure and analyse quantitatively the gravity center of the body. The present paper reports our method of measuring and analysing the gravity center of the body quantitatively using a microcomputer system in normal persons and patients with cervical disorders. In normal persons, there is no significant difference in measuring and analysing the gravity center of the body among each age groups (20's-60's), except standing with eye close of 60's…