Recording the visual electrically evoked potential (VEEP).
A system for recording cortical responses to electrical stimulation of the visual system (electrical phosphene) is described. The system included a rotatable electrode pair for stimulation, with which artifacts caused by the relatively large stimulating currents could be reduced to suitable levels. Optical isolation on both the stimulating and recording sides of the equipment provided safety for the subject and made precise application of the stimulating current possible.
D004558:Electric Stimulation; D004566:Electrodes; D005071:Evoked Potentials; D006801:Humans; D008722:Methods; D009799:Ocular Physiological Phenomena; D014793:Visual Cortex / Q000502:physiology*