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EEG and power spectra

Harm-Jan Wieringa wieringa at compuserve.com
Wed Nov 3 07:56:52 EST 1999


Sure you can calculate that, but you need a more powerful processing
package, more for research and less for clinical work.

Have a look at http://www.neuro.com/neuroscan/prod03.htm


Ong Puay Hoon <ophoon at YAHOO.COM> wrote in message
news:19991102004343.13578.rocketmail at web2104.mail.yahoo.com...
> Dear all,
> I'm a postgrad student intending to use EEG to study
> cortical activation during fraction tasks among
> elementary school children. The Medelec DG Compact
> recording machine has a software to compute power
> spectra values for each of these wave bands - delta,
> theta, alpha, beta1 and beta2 - for each of the 16
> cortical sites.
> 1) I'm aware that higher power spectra values do not
> necessarily indicate higher activation. What
> guidelines/principles can I employ to interpret these
> values?
> 2) Is it possible to study of coherence and
> cross-coherence from power spectra values?
> 3) How are ERPs different from power spectra values?
> Please help.
> Thank you.
> Ong Puay Hoon, Malaysia
> =====
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