Application of Fast Fourier Transform in Electroencephalography
Hansjürgen Matthies, Rudolf Brödemann · Biometrical Journal · 1981
Abstract Today the Fourier Transform is also used in the analysis of biological time series with periodical parts. For N = 2M EEG sampling values the Fast Fourier Transform algorithm of COOLEY and TUKEY is applicable. For this a FORTRAN IV program EEG‐FFT has been developed for computation of power spectrum. At the data processing equipment EC 1040 the CPU‐time for 210 = 1024 EEG sampling values is smaller than 1.5 s. The FORTRAN IV program can be applied both in offline and online data processing.