I want clean my signal and shouldn't use any type of filters so I used cleanline (an EEGLAB-Matlab toolbox) to remove 60Hz line noise.
but as you see there is an 113Hz peak and cleanline can't clean it.
I have 3 questions:
1) what is 113Hz noise? is it 60Hz harmonic?
2) can it influence in my Processes?
3) how can clean it?