1. Transient decreases in Bispectral Index without associated changes in the level of consciousness during photic stimulation in an epileptic patient 
N. Ohshima, M. Chinzei, K. Mizuno, M. Hayashida, T. Kitamura, H. Shibuya, K. Hanaoka 
British Journal of Anaesthesia 
Volume 98, Issue 1, Pages (January 2007)
DOI: /bja/ael309
Copyright © 2007 British Journal of Anaesthesia Terms and Conditions

2. Fig 1
Raw electroencephalogram (EEG) waves recorded by a standard system EEG monitor at baseline (a) and during photic stimulation (PS) (b) before starting anticonvulsive treatment with valproate, and at baseline (c) and during photic stimulation (d) after starting the treatment.
British Journal of Anaesthesia  , DOI: ( /bja/ael309)
Copyright © 2007 British Journal of Anaesthesia Terms and Conditions

3. Fig 2
Photic stimulation (PS)-induced changes in Bispectral Index (BIS) and raw electroencephalogram (EEG) waves displayed on the A-2000 BIS monitor, before and after starting anticonvulsive treatment with valproate. (a and b) portray raw EEG waves recorded before and during PS, respectively, from the second EEG examination, before the initiation of anticonvulsant therapy. (c) portrays raw EEG waves recorded during PS from the third EEG examination, 2 weeks after the initiation of anticonvulsant therapy. (d and e) portray BIS values before and during PS, respectively, from the second EEG examination. (f) portrays BIS values during photic stimulation from the third EEG examination. In panels (e and f), the labelled box identifies the period of photic stimulation.
British Journal of Anaesthesia  , DOI: ( /bja/ael309)
Copyright © 2007 British Journal of Anaesthesia Terms and Conditions