Robert Bedford
University of Manchester
9 Papers
9 Citations
Robert Bedford is an academic researcher from University of Manchester. The author has contributed to research in topics: Retinal degeneration & Retinal ganglion. The author has an hindex of 6, co-authored 9 publications. Previous affiliations of Robert Bedford include National Institute for Health Research.
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Papers
Melanopsin-Based Brightness Discrimination in Mice and Humans
Timothy M. Brown,Sei-ichi Tsujimura,Annette E. Allen,Jonathan Wynne,Robert Bedford,Graham Vickery,Anthony A. Vugler,Robert J. Lucas +7 more
TL;DR: This work used parallel behavioral and electrophysiological experiments to first show that melanopsin contributes to brightness discrimination in both retinally degenerate and fully sighted mice, and to provide evidence for a similar role in healthy human subjects.
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Rods progressively escape saturation to drive visual responses in daylight conditions
Alexandra Tikidji-Hamburyan,Alexandra Tikidji-Hamburyan,Katja Reinhard,Katja Reinhard,Riccardo Storchi,Johannes Dietter,Hartwig Seitter,Hartwig Seitter,Katherine E. Davis,Saad Idrees,Marion Mutter,Lauren Walmsley,Robert Bedford,Marius Ueffing,Petri Ala-Laurila,Timothy M. Brown,Robert J. Lucas,Thomas Münch +17 more
TL;DR: Physiological parameters that mediate response saturation of rod photoreceptors in mouse retina are described, and it is shown that rods can drive visual responses in photopic conditions.
Melanopsin-driven increases in maintained activity enhance thalamic visual response reliability across a simulated dawn
Riccardo Storchi,Nina Milosavljevic,Cyril G. Eleftheriou,Franck P. Martial,Patrycja Orlowska-Feuer,Robert Bedford,Timothy M. Brown,Marcelo A. Montemurro,Rasmus S. Petersen,Robert J. Lucas +9 more
TL;DR: Electrophysiological activity in the mouse dorsal lateral geniculate nucleus is recorded under exposure to a simulated dawn to show that, over higher irradiances, this increase in firing originates with inner-retinal melanopsin photoreception and results in an up to threefold increase in single-trial reliability of fast visual responses.
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Restoration of vision with ectopic expression of human rod opsin
Jasmina Cehajic Kapetanovic,Cyril G. Eleftheriou,Annette E. Allen,Nina Milosavljevic,Abigail Pienaar,Robert Bedford,Katherine E. Davis,Paul N. Bishop,Robert J. Lucas +8 more
TL;DR: Ectopically expressed human rod opsin, driven by either a non-selective or ON-bipolar cell-specific promoter, functioned outside native photoreceptors and restored visual function in rd1 mice, suggesting that rod Opsin merits consideration as an optogenetic actuator for treating patients with advanced retinal degeneration.
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Report Melanopsin-Based Brightness Discrimination in Mice and Humans
Brown Timothy Matthew,Sei-ichi Tsujimura,Annette E. Allen,Jonathan Wynne,Robert Bedford,Graham Vickery,Anthony A. Vugler,Lucas Robert James +7 more
- 01 Jan 2012
TL;DR: Direct evidence that an aspect of visual discrimination innormally sighted subjects can be supported by inner retinalphotoreceptors is shown, and this prediction of the hypothesis that intrinsically photore-ceptive retinal ganglion cells (ipRGCs) contribute to assessing brightness is confirmed.