The EEG preferential frequency as an indicator of the degree of wakefulness |
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Authors: | E Otto P Gruner |
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Affiliation: | Zentralinstitut für Arbeitsmedizin der DDR, Berlin. |
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Abstract: | Ever since electroencephalographic research began, interest has been focused on problems of the physiology, pathology, and symptomatology of the relationship between sleep and wakefulness. Following preliminaries, the present paper describes a combined procedure for the determination of the EEG preferential frequency, and by random sampling statistically examines its suitability for indicating the fluctuations of activation level as a control measure. A trained volunteer gradually increased his degree of wakefulness, reliably producing parallel changes in the preferential frequency in three frequency bands. A standardised manual period analysis as control produced largely the same results. The preferential frequency has considerable value for indicating the degree of wakefulness. |
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