ANALYSIS OF ELECTROENCEPHALOGRAPHIC (EEG) SIGNALS WITH FREQUENCY-WAVENUMBER SPECTRAL TECHNIQUES (paper presented at Defence Science Symposium, Ottawa, Ontario, Canada, 25 - 26 April 1990)

Authors
  1. Fraser, W.D.
Corporate Authors
Defence and Civil Inst of Environmental Medicine, Downsview ONT (CAN)
Abstract
Frequency-Wavenumber Spectrum Estimation (FWSE) techniques are used in the processing of sonar, radar, and seismic signals to remove incoherent noise and determine the velocity vectors of signals arriving at an array of sensors. These techniques can also be applied to the electrical signals generated by the brain. The Zero-Delay Wavenumber Spectrum (ZDWS) technique generates a high resolution estimate of the FWS, interpreting the signals from scalp electrodes as the sum of wide-band plane wave projected onto the electrode array. The ZDWS algorithm was applied to EEG data collected from the scalp of conscious subjects. The measured wave velocities were between 1 and 5 m/sec which is in the range of reported action potential velocities in primate cortical association axons.
Date of publication
15 Apr 1990
Number of Pages
18
DSTKIM No
90-03677
CANDIS No
65920
Format(s):
Hardcopy;Originator's fiche received by DSIS

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