0: Eyes closed to pain
1: Eyes open to pain, not tracking
2: Eyes open to voice, not tracking
3: Eyes open spontaneously, not tracking
4: Eyes open spontaneously, tracking or blinking on command

0: No response to pain, or generalized clonus
1: Extension to pain
2: Flexion to pain
3: Localizes to pain
4: Obeys verbal commands

0: Absent pupil, corneal, *and* cough reflexes
1: Absent pupil AND corneal reflexes
2: Absent pupil OR corneal reflex
3: One pupil fixed
4: Pupil and corneal reflexes present

0: Apnea, or breathes at set ventilator rate
1: Breathes above set ventilator rate
2: Unintubated, irregular breathing
3: Unintubated, Cheyne-Stokes breathing
4: Unintubated, regular breathing pattern