1. Concurrent recording of AEP, SSEP and EEG parameters during anaesthesia: a factor analysis 
H. Schwilden, E. Kochs, M. Daunderer, Ch. Jeleazcov, B. Scheller, G. Schneider, J. Schu¨ttler, D. Schwender, G. Stockmanns, E. Po¨ppel 
British Journal of Anaesthesia 
Volume 95, Issue 2, Pages (August 2005)
DOI: /bja/aei113
Copyright © 2005 British Journal of Anaesthesia Terms and Conditions

2. Fig 1
Representative example of one patient, showing averaged AEPs, spontaneous EEG epochs and averaged SSEPs recorded before and during maintenance of and recovery from anaesthesia with propofol and alfentanil: t, time (min) related to the start of recording (for AEP and SSEP the trigger onset of the first averaged sweep; for spontaneous EEG the start of the epoch); tinduction=5.30; tintubation=9.23; tsurgical incision=44.93; tstart recovery=79.25; textubation=85.52; and tawake=86.13.
British Journal of Anaesthesia  , DOI: ( /bja/aei113)
Copyright © 2005 British Journal of Anaesthesia Terms and Conditions

3. Fig 2
Scree output of factor initial variance (limited to first 20 factors) and explained variance in the data set by the factor solution.
British Journal of Anaesthesia  , DOI: ( /bja/aei113)
Copyright © 2005 British Journal of Anaesthesia Terms and Conditions

4. Fig 3
Predicted variance in variables from rotated factors (communalities).
British Journal of Anaesthesia  , DOI: ( /bja/aei113)
Copyright © 2005 British Journal of Anaesthesia Terms and Conditions

5. Fig A1
Binary tree of sets of coefficients (packets) characterizing the time–frequency content of a signal at different levels with different resolutions.
British Journal of Anaesthesia  , DOI: ( /bja/aei113)
Copyright © 2005 British Journal of Anaesthesia Terms and Conditions