Adaptive SNR-Anhebung von VEP mit Statistik höherer Ordnung

Visual evoked potentials (VHP) are diagnostic features in assessment of the visual System. Because of very low SNR (Signal-lo-Noise Ratio) repetitive stimulus responses are averaged to obtain sufficient signal strength. Sucessive averaging is time consumptive. In multichannel KHG recordings we save the measurement time improving the SNR simultaneously by adaptive channel delay control. The adaptive algorithm is controlled by higher-order correlation coefficient, which is a scalar giving the similarity of multi-channel recordings