Persisting effects of minor head injury observable during hypoxic stress

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Abstract
Ten university students who had recovered from minor head injury between one and three years previously were given vigilance and memory tests at a simulated altitude of 3,800 metres. Their performance was significantly below that of a matched group of students who had never had a head injury. The finding supports the proposition that even minor head injury has persisting effects, though they may be subtle and only emerge under the effects of stress.