Accession Number : AD0773808

Title :   Development of a Period Analysis Computer Program.

Descriptive Note : Final rept.,

Corporate Author : SCHOOL OF AEROSPACE MEDICINE BROOKS AFB TEX

Personal Author(s) : Lessard,Charles S. ; Balusek,Robert A. ; Hughes,Harry M.

Report Date : OCT 1973

Pagination or Media Count : 12

Abstract : The development of a computer program for decomposition and compression of the electroencephalographic (EEG) signal by means of period analysis is described. The program digitizes four channels of analog EEG signals simultaneously, and determines the time between zero crossings by counting the number of samples in the fundamental EEG signal and its derivative. Measurement vectors, formed from the interval of time between zero crossings, are tallied in histogram frequency bands for each one-minute interval. The resulting vectors are used not only for the preliminary assessment of the descriptors as stage discriminators, but also as inputs to a discriminant analysis program for classifying EEG signals according to the various states of sleep. (Author)

Descriptors :   *Computer programming, *Electroencephalography, Statistical analysis, Data processing, Sleep

Subject Categories : Computer Programming and Software
      Biomedical Instrumentation and Bioengineering

Distribution Statement : APPROVED FOR PUBLIC RELEASE