Filtering scenarios

EEG
EMG
 Notch filter is OFF
  Low-pass/Band-pass is OFF
In the "raw" frequency characteristics, the remaining attenuation stems from the time constant of the amplifier, and from other unconditional hardware filters.


These are real, measured filter curves of the equipment used in the Zurich Sleep Lab.

Filter characteristics

 

 

 

©1998 BITS OF SLEEP (Demo) : Human sleep investigation: Signal analysis basics.