Automatic detection, measurement and documentation of the visual evoked potential using a commercial microprocessor-equipped averager.
A program has been developed, using a Datalabs Unimac 4000B wave form analyser and microprocessor, which automatically detects and measures the averaged VEP, compares it with the data obtained from normal subjects and prints the results in a report-quality format. The minimum additional requirements are a printer and the Datalabs 2 kbyte non-volatile program store. The method correctly identifies the relevant peak and trough (N2 and P2) in 84.2% of potentials from a patient population, but the design of the program allows the operator to override the values determined. The modifications appear in the results printed on completion of the measurement sequence. A useful, adaptable and time saving application of fixed function microprocessor has been developed which provides latency, amplitude and normality information for VEPs.
D003201:Computers; D005071:Evoked Potentials; D006801:Humans; D014793:Visual Cortex / Q000502:physiology*