The aim of the study is to evaluate the cortical excitability in the severe brain injured patients. We hypothesize that: 1. There is a continuous decrease in intracortical inhibition from healthy subjects to awake patients with severe brain injury, and to patients with impaired consciousness. 2. Decreased intracortical inhibition correlate with the degree of impairment assessed with the clinical scores in patients with severe brain injury.
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Short Afferent Inhibition
Timeframe: Within one week after clinical assessment