Daniel Robles Camarillo, Luis Ni?o de Rivera, Ernesto Paredes Mart?nez, Hugo Quiroz Mercado, Jessica L?pez Miranda
The present work proposes an electronic waveform generator for transcorneal electrical stimulation (TES). The applied waveform model is generated on a digital processor by means of an adaptive finite impulse response (FIR) filter, which output waveform is synthesized from the original waveform registered from a multi-focal electroretinograph (MF-ERG). The stimulation waveform applied in patients with central retinal artery occlusion (CRAO) in this procedure, is qualitatively different from the one reported by others like Tano et al [1, 2]. Results show that the waveform proposed is like the one measured by the MF-ERG. CRAO Patients stimulated with the proposed wavform reported phosphenes associated with variations of the filter coefficients.