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Tuesday, April 15, 2008

How to Calculate Frequency, Duration & Amplitude in EEG?

Bill Byrum writes about how to analyse and evaluate EEG inorder to calculate the frequency, duration etc., in the following article that appeared in the latest ASET newsletter.

Calculating Frequency, Duration, Amplitude, and Voltage Using a Legend
By Bill Byrum, MBA, R. EEG/EP T., CNIM

In this article I want to review with you
how simple it is to use a Legend. You will
need a measurement ruler graduated into
one mm segments. It would also be handy
to have a calculator that can be set to divide
to 3 decimal places. If you perform division
by hand, please be sure to carry the results
to 3 decimal places when calculating
waveform duration.
I strongly recommend whenever you
are doing calculation utilizing a Legend
that you use a referential montage and the
reference is not contaminated with EEG
activity. This is because in a bipolar
montage the waveforms are the result of
two inputs active with EEG activity. The
same can be said of a referential montage if
the reference is contaminated. For complete article, click the linked title?.