Apparatus for determining sleep staging

Details Apparatus for determining sleep staging Apparatus for determining sleep staging

1998-12-01

2000-12-05

O'Connor, Cary

Surgery

Diagnostic testing

Detecting brain electric signal

A61B 504

Patent

active

061578576

ABSTRACT:
Small bandwidth frequency ranges are disclosed for frequency transformation and processing of EEG signals for determining sleeping staging with a sleep staging index (S.sub.F) in which a frequency transformation of a time domain EEG signal from an EEG measuring device is supplied in a plurality of sub-band frequency ranges a, b, and c. Processing of the frequency domain transformed data is performed which ascertains values A, B, and C representative of the frequency range a from 4.75 to 6.75 Hz, the frequency range b from 12.75 to 18.5 Hz, and the frequency range c from 18.75 to 35.0 Hz or representative of least two of said frequency ranges and determines therefrom a sleep staging index S.sub.F.

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