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Midbrain/upper pontine Midpoint pupils, fixed to light Minimal deviation of eyes on oculocephalic/oculovestibular testing Extensor response to pain and/or decerebrate posturing Hyperventilation Lower pontine Midpoint pupils, fixed to light No response on oculocephalic/oculovestibular testing No response to pain or flexion of legs only Flaccidity with extensor plantars Shallow or ataxic respiration
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Fenella J. Kirkham (2001) studied this question.
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