Synchrony measure, as a new parameter for auditory brain stem evoked response.

The current application of fast Fourier transform (FFT) to the analysis of auditory evoked brainstem response (ABR) is reviewed under four categories: (1) digital filtering, which facilitates isolation of fast and slow components from the same ABR wave, is the most common use of FFT; (2) power spectral analysis: this seems significant in ABR for isolating and analysing slow, middle and fast components from the Fourier components around each peak of the power spectrum with a three-peak pattern by inverse fast Fourier transform; (3) cross correlation function shows the relationship between two signals being analysed from the viewpoint of their phase. Clinical applications are used in the diagnosis of multiple sclerosis and for automatic detection of ABR; and (4) phase spectral analysis: the synchrony measure method (Fridman, 1984) is a type of phase spectral analysis. In this method, the phase variances of selected Fourier components are calculated, from among 10 averaging groups of 200 sweeps in the same stimulating conditions, to determine the presence or absence of a response. The clinical application of this method to the automatic evaluation of ABR is discussed.

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Synchrony measure, as a new parameter for auditory brain stem evoked response.

Cited by 2 publications

References 7 publications

A Study on the Phase Spectral Analysis of Middle Latency Response and 40-Hz Event-related Potential in Central Nervous System Disorders

A Study on the Phase Spectral Analysis of Middle Latency Response and 40-Hz Event-related Potential in Central Nervous System Disorders

Application of fast Fourier transform to auditory evoked brainstem response

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