2sXu M, Lei YN, Zhou JX. long-term unconsciousness Use of cerebral state index to predict in patients after elective craniotomy with delay recovery[J].BMC neurol,2011,11(15):1-7.
3Pilge S,Blum J,Kochs EF,et al. Does the cerebral state index separate consciousness from unconsciousness.'? [J]. Anesth analg,2011,113(6) : 1403-1410.