IEEE Transactions on Biomedical Engineering

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Multi-Angular Electroretinography (maERG): Topographic mapping of the retinal function combining real and virtual electrodes
This work aims to create a functional retinal map, to locate potential areas of diseased retina. To do so, we created a new electroretinogram recording method which increases the number of recording electrodes around the eye from only a few real ones, by simply moving the gaze. We show that, by solving the inverse problem with an eye model, we can recreate the retinal activity that would have produced the many signals obtained. We present the best recording method and requirements needed for our novel technique to reliably reproduce the retina’s topographic activity, which should improve disease detection and follow-up... Read more
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Optimizing the Electrical Stimulation of Retinal Ganglion Cells
Abstract Epiretinal prostheses aim to restore visual perception in the blind through electrical stimulation of surviving retinal ganglion cells (RGCs). While the effects of several waveform parameters (e.g., phase duration) on stimulation efficacy have been described, their relative influence remains unclear.... Read more
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Suppression of Subthalamic Nucleus Activity by Micromagnetic Stimulation
Abstract Magnetic stimulation delivered via 0.5-mm diameter coils was recently shown to activate retinal neurons; the small coil size raises the possibility that micromagnetic stimulation (μMS) could underlie a new generation of implanted neural prosthetics. Such an approach has several inherent... Read more