From: Martijn Arns (martijnarns_at_y...)
Date: 2001-02-15 09:32:35
Dear Joerg,
in response to your question the following.
It's rather simple for frequency and sample rate.
Indeed the most usefull (traditional) frequencies are
between 0.5 and 30-35 Hz. Say the maximum frequency
you want to be able to measure is 35 Hz, than your
sample rate should be at least 70 Hz (according to the
Nyquist Theorema).
I'm not too familiar with noise, impedance etc. So I
can't give you any clue on this one.
A general question though: The assumption is that the
most usefull frequencies are the between 0.5 and 35 Hz
(the traditiona, alpha, beta, theta and delta). But
has anyone ever performed Neurofeedback on Gamma (30
Hz and above)?
60-80 Hz EEG activity has been found to be related to
cognitive activity (binding hypotheses). This activity
could therefore be very interesting.
And has anyone any experience with Chaos analysis and
Neurofeedback?
Kind regards,
Martijn Arns
> >
> > 1)amplifier bandwidth ?
> > 2)noise ?
> > 3)bits resolution ?
> > 4)sample rate ?
> > 5)electrode impedance measurement ?
> >
> >
> > CU,
> >
> > Joerg
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