Used to describe spasticity. Score or 0, slight increase in tone with slight momentary rigidity when limb is moved or with minimal resistance at the end of the range of motion; 1+, slight increase in tone with slight momentary rigidity when limb is moved and minimal resistance through the last part of the range of motion; 3, most of range of motion with increased tone, but still with easy movement; 4, signficant increase in muscle tone; 5, affected limbs are rigid.