Are the electroencephalograms mainly rhythmic? Assessment of periodicity in wide-band time series.

@article{Bullock2003AreTE,
  title={Are the electroencephalograms mainly rhythmic? Assessment of periodicity in wide-band time series.},
  author={Theodore Holmes Bullock and M C Mcclune and James T. Enright},
  journal={Neuroscience},
  year={2003},
  volume={121 1},
  pages={233-52}
}
To test the hypotheses that (i). electroencephalograms (EEGs) are largely made up of oscillations at many frequencies and (ii). that the peaks in the power spectra represent oscillations, we applied a new method, called the period specific average (PSA) to a wide sample of EEGs. Both hypotheses can be rejected. Although the principal peaks in the two spectra agree most of the time, quite often a peak in the power spectrum accompanies no periodicity peak and some periodicity peaks have no power… CONTINUE READING