How to select a filter to analyse EEG signals?

Question

How to select a filter to analyse EEG signals?

Answer 1

OK, I have been thinking along these-lines myself but I'm only guessing here.

It seems to me, since EEG signals are not sine-waves, that your filter with require a significant bandwidth in order to incorporate any harmonic content in the EEG waves.  Brain waves cut off at just under 100 Hz.  I would figure a bandwidth of at least 10 times that cutoff limit, between 1 KHz and 10 KHz.

Just some thoughts on the matter.

See: EEG, Spectral analysis and Filters

http://www.maths.bris.ac.uk/~guy/Teachin...

Answer 2

If I remember, EEG amps use very low cutoff filters.  I think 1 Hz or less comes to mind.

But I could be wrong.  There is a lot of trivia running around in my brain after 60 years.  Especially since it filled up in 1958...