Currently, a challenge in electrical stimulation of the retina with a visual prosthesis (bionic
eye) is to excite only the cells lying directly under the electrode in the ganglion cell layer …

Objective. In spite of intense theoretical and experimental investigations on electrical nerve
stimulation, the influence of reversed ion currents on network activity during extracellular …

Responses of retinal ganglion cells to direct electrical stimulation have been shown
experimentally to be well described by linear–nonlinear models. These models rely on the …

Bipolar cells of the retina are among the smallest neurons of the nervous system. For this
reason, compared to other neurons, their delay in signaling is minimal. Additionally, the …

Using inner eye prostheses, the restoration of vision to the blind has achieved a low level
which hopefully will be enhanced in the future. Patients suffering from degeneration of their …

Selective stimulation with microelectrodes of individual neurons is a major challenge in
neuroprosthetics. Actively propagation of action potential (AP) is possible within a …

Retinal implants use an array of electrodes to generate visual perceptions in blind people
that have lost their photoreceptor cells[1]. Some types of retinal implants aim for stimulating …

Seit Ende des letzten Jahrhunderts werden Versuche mit elektronischen Netzhautprothesen
oder auch Sehchips durchgeführt. Ziel ist es, ein zumindest rudimentäres Sehvermögen …