Improved amplitude evaluation of the frequency following response (FFR).
Three methods were combined to improve the evaluation of the amplitude of the frequency following response (FFR) in unfavorable signal-to-noise conditions. The first step was the application of a time-multiplex averager to reduce noise variance between amplitude values to be compared. The second step was the evaluation of amplitude in the frequency domain by means of a digital triangle filter. The third step was the correction of raw FFR amplitudes by an algorithm that takes into account several noise values.
Dembon
H
H
Institut für Arbeitsphysiologie, Abt. Sinnes-und Neurophysiologie, Dortmund, F.R.G.
Hohnsbein
J
J
Blanke
L
L
Falkenstein
M
M
D004594:Electrophysiology / Q000379:methods; D005072:Evoked Potentials, Auditory; D005583:Fourier Analysis; D006801:Humans; D009622:Noise