1. Changes in the electroencephalogram during anaesthesia and their physiological basis 
S. Hagihira 
British Journal of Anaesthesia 
Volume 115, Pages i27-i31 (July 2015)
DOI: /bja/aev212
Copyright © 2015 The Author(s) Terms and Conditions

2. Fig 1
EEG waveform (4 s duration) during 0.3, 0.6, 0.9, 1.2, and 1.5% isoflurane anaesthesia in a 55-year-old ovarian tumor patient undergoing resection.
British Journal of Anaesthesia  , i27-i31DOI: ( /bja/aev212)
Copyright © 2015 The Author(s) Terms and Conditions

3. Fig 2
Power spectrum changes during isoflurane anaesthesia in a 43-year-old female patient undergoing resection for colon cancer.
British Journal of Anaesthesia  , i27-i31DOI: ( /bja/aev212)
Copyright © 2015 The Author(s) Terms and Conditions

4. Fig 3
Relative β ratio (RBR) changes during isoflurane anaesthesia. RBR values were calculated from stored data used in a previous report. (Source: ref.8).
British Journal of Anaesthesia  , i27-i31DOI: ( /bja/aev212)
Copyright © 2015 The Author(s) Terms and Conditions

5. Fig 4
Scheme of neuronal circuits related to spindle generation GABA, gamma-amino butyric acid; Ach, acetylcholine; Glu, glutamate; PPT/LDT, pedunculopontine tegmental/laterodorsal tegmental nuclei. (Source: compiled from refs.10 11).
British Journal of Anaesthesia  , i27-i31DOI: ( /bja/aev212)
Copyright © 2015 The Author(s) Terms and Conditions

6. Fig 5
Effect of surgical incision (noxious stimuli) on pBIC-high in 12 patients during isoflurane anaesthesia (Source: Plotter data from ref.13).
British Journal of Anaesthesia  , i27-i31DOI: ( /bja/aev212)
Copyright © 2015 The Author(s) Terms and Conditions