brainrate

 BRAINRATE estimates the weighted mean frequency according to [1] 
  Other (similar) parameters are the spectral edge frequency or
  the Hjorth's Mobility parameter or Barlow's center frequency.   
           
  [BRAINRATE, SEF90, SEF95] = brainrate(...)
  
  [...] = brainrate(S,Fs)
  [...] = brainrate(S,Fs,0)
       calculate stationary brainrate parameter 
  [...] = brainrate(S,Fs,UC) with 0<UC<1,
       calculates time-varying brainrate parameter using 
       exponential window 
 
 Input: 
    S    data (each channel is a column)
    UC    update coefficient (0<UC<1) 

 Output: 
    BRAINRATE    weighted mean frequency [1] 
     SEF90    spectral edge frequency (power below SEF90 is 90% of total power)        
     SEF95    spectral edge frequency (power below SEF95 is 95% of total power)        

 see also: HJORTH, BARLOW

 REFERENCE(S):
 [1] Nada Pop-Jordanova and Jordan Pop-Jordanov
     Spectrum-weighted EEG frequency ("Brainrate") as a quantitative
     indicator of arousal
     Contributions, Sec. Biol. Med. Sci., MASA, XXVI, 2, p. 35–42 (2005)
     ISSN 0351–3254, UDK: 616.831-073.97