Medical Definition of locked-in syndrome
: the condition of an awake and conscious patient who because of motor paralysis throughout the body is unable to communicate except possibly by coded eye movements Trapped in their own bodies, the people who suffer from what is sometimes called locked-in syndrome are lucky if they can communicate their needs with a blink or a raised eyebrow. — Discover, February 1999 The locked-in syndrome results from brainstem lesions which disrupt the voluntary control of movement without abolishing either arousal or the content of awareness.— Adam Zeman, The Lancet, 13 Sept. 1997
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