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Statistical detection of visually evoked potentials

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2 Author(s)
G. Henning ; Dept. of Biomed. Eng., Ilmenau Tech. Univ., Germany ; P. Husar

In ophthalmologic diagnostics well-defined light stimuli are used to study the visual system. Sensor arrays are used in applications where the signal-to-noise ratio is very low or where the spatial structure of the signal is of interest. Since the signal-to-noise ratio can be exponentially increased with the designed function it can be assumed, that the reliability of signal detection will also significantly increase. In other words, for a given false detection probability, the necessary amount of data should significantly decrease. If the preconditions regarding the noise (spatial and temporal noncorrelatedness) and the signal (constant shape over the channels) are fulfilled, a detector could be used as a simple mean-value discriminator. A suitable signal detector based on the desired function and the influence of signal and noise parameters on the detection reliability will be investigated in future work

Published in:

IEEE Engineering in Medicine and Biology Magazine  (Volume:14 ,  Issue: 4 )