Transformations towards the normal distribution of broad band spectral parameters of the EEG - PubMed (original) (raw)
Transformations towards the normal distribution of broad band spectral parameters of the EEG
T Gasser et al. Electroencephalogr Clin Neurophysiol. 1982 Jan.
Abstract
In this report transformations are evaluated for obtaining normally distributed broad band spectral parameters (both for absolute and relative power) in a sample of healthy individuals. This problem leads automatically to the question of defining a normative sample, both in terms of sampling and recording conditions; as to the latter, the electro-oculogram proved to be crucial. For relative power the transformation log(x/(1-x)) was excellent in all regards, whereas the best transformation for absolute power--log(x)--was not fully satisfactory for all bands.
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