Ganglion for beginners / strong 50 Hz in FFT

edited March 2017 in Ganglion
I am following the Ganglion guide to obtain an EEG. I am starting with an impedence check and all is fine (5-15kΩ range). 


I get a dominant EEG signal at 50Hz. I close my eyes and a 10Hz signal emerges slightly but the 50Hz is still very strong. Is this normal? 

Thank you in advance for your help.

Best wishes




  • wjcroftwjcroft Mount Shasta, CA
    Are you turning on the notch filter (button?) You must use the 50 Hz notch filter.
  • 50Hz noise is normal. You have to filter it out. 
    50Hz in Europe and 60Hz in USA is mainly the electric current of the environment (e.g Lights). 

  • @paski @wjcroft Thank you for your responses. (I was using the 60Hz notch filter). Best wishes.
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