The experimental system was constructed for development and evaluation of visual brain potentials detection algorithm. Our experimental system consists of the developed, spherical, LED based perimeter head, a portable EEG recorder and a PC as a multitask unit. The computer enables full control of perimeter stimulation as well as acquisition and analysis of recorded EEG signals, using for visual response detection the newly developed VEPDA algorithm. Application of the VEPDA algorithm, based on Independent Component Analysis, allows much faster detection of visual evoked potentials comparing to traditional trial averaging routines. Main outcomes of this new approach are high reliability, considerable shortening of the examination time as well as possibility of objective examination - even patients not able to respond consciously, as very young children or elderly and intellectually handicapped patients.
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