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Recursive digital filter for fast visual evoked potential estimation and classification

Recursive digital filter for fast visual evoked potential estimation and classification

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Generally, visual evoked potential (VEP) estimation requires power spectrum computation. Here VEP is estimated using a recursive digital filter, which is faster and simpler to design. The method assumes VEP can be represented by a 40 Hz spectrum and the filter extracts a 40 Hz signal in the time domain, circumventing the normal procedure of power spectrum computation. Experimental results validate the method for discriminating alcoholics from control subjects.

Inspec keywords: visual evoked potentials; neurophysiology; patient diagnosis; medical signal processing; recursive filters

Other keywords: alcoholics classification; visual evoked potential classification; recursive digital filter; 40 Hz; fast visual evoked potential estimation; bioelectric potentials

Subjects: Bioelectric signals; Bioelectricity; Filtering methods in signal processing; Physiology of the eye; nerve structure and function; Electrodiagnostics and other electrical measurement techniques; Digital filters

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