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@ARTICLE{Haselier:842727,
author = {Haselier, Christine and Biswas, Sonia and Rösch, Sarah and
Thumann, Gabriele and Müller, Frank and Walter, Peter},
title = {{C}orrelations between specific patterns of spontaneous
activity and stimulation efficiency in degenerated retina},
journal = {PLoS one},
volume = {12},
number = {12},
issn = {1932-6203},
address = {Lawrence, Kan.},
publisher = {PLoS},
reportid = {FZJ-2018-00927},
pages = {e0190048 -},
year = {2017},
abstract = {Retinal prostheses that are currently used to restore
vision in patients suffering from retinal degeneration are
not adjusted to the changes occurring during the remodeling
process of the retina. Recent studies revealed abnormal
rhythmic activity in the retina of genetic mouse models of
retinitis pigmentosa. Here we describe this abnormal
activity also in a pharmacologically-induced (MNU) mouse
model of retinal degeneration. To investigate how this
abnormal activity affects the excitability of retinal
ganglion cells, we recorded the electrical activity from
whole mounted retinas of rd10 mice and MNU-treated mice
using a microelectrode array system and applied biphasic
current pulses of different amplitude and duration to
stimulate ganglion cells electrically. We show that the
electrical stimulation efficiency is strongly reduced in
degenerated retinas, in particular when abnormal activity
such as oscillations and rhythmic firing of bursts of action
potentials can be observed. Using a prestimulus pulse
sequence, we could abolish rhythmic retinal activity. Under
these conditions, the stimulation efficiency was enhanced in
a few cases but not in the majority of tested cells.
Nevertheless, this approach supports the idea that modified
stimulation protocols could help to improve the efficiency
of retinal prostheses in the future.},
cin = {ICS-4},
ddc = {500},
cid = {I:(DE-Juel1)ICS-4-20110106},
pnm = {553 - Physical Basis of Diseases (POF3-553)},
pid = {G:(DE-HGF)POF3-553},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:29281713},
UT = {WOS:000419006200058},
doi = {10.1371/journal.pone.0190048},
url = {https://juser.fz-juelich.de/record/842727},
}