M
Mark S. Humayun
Researcher at University of Southern California
Publications - 653
Citations - 29453
Mark S. Humayun is an academic researcher from University of Southern California. The author has contributed to research in topics: Retina & Retinal. The author has an hindex of 84, co-authored 636 publications receiving 26997 citations. Previous affiliations of Mark S. Humayun include Lawrence Livermore National Laboratory & Duke University.
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Proceedings ArticleDOI
Retinal prosthesis phosphene shape analysis
TL;DR: Psychophysical clinical data examining how stimulation amplitude affects phosphene shape and repeatability on a single electrode shows that stimulation of the retina creates repeatable percept shapes and that an increase in stimulation amplitude causes a significant change in size and shape of phosphenes.
Journal ArticleDOI
Long-term stimulation by active epiretinal implants in normal and RCD1 dogs.
Dilek Guven,James D. Weiland,Gildo Y. Fujii,Brian V. Mech,Manjunatha Mahadevappa,Robert J. Greenberg,Roberto Roizenblatt,G. Qiu,Laurie LaBree,Xiaopeng Wang,David R. Hinton,Mark S. Humayun +11 more
TL;DR: Chronic electrical stimulation of the dog retina at up to 0.1 mC cm(-2) with an epiretinal prosthesis does not appear to adversely affect the retina.
Journal ArticleDOI
A Comparison of Two and Three Dimensional Dipole Antennas for an Implantable Retinal Prosthesis
TL;DR: In this paper, the feasibility of using three dimensional folded dipole antennas as a data-telemetry implantable receiving antenna in a dual-unit retinal prosthesis to restore partial vision to the blind was investigated.
Journal ArticleDOI
Electrical stimulation in normal and retinal degeneration (rd1) isolated mouse retina.
Thomas M. O’Hearn,Srinivas R. Sadda,James D. Weiland,Mauricio Maia,E. Margalit,Mark S. Humayun +5 more
TL;DR: Both the electrode positioning as well as the health of the retinal tissue play a role in the stimulating current required to elicit a retinal response.
Journal ArticleDOI
Subretinal implantation of a monolayer of human embryonic stem cell-derived retinal pigment epithelium: a feasibility and safety study in Yucatán minipigs
Michael Koss,Michael Koss,Paulo Falabella,Francisco Rosa Stefanini,Marcel Pfister,Biju B. Thomas,Amir H. Kashani,Rodrigo Brant,Danhong Zhu,Dennis O. Clegg,David R. Hinton,Mark S. Humayun +11 more
TL;DR: Although inconclusive regarding the necessity or benefit of systemic or local immunosuppression, this study demonstrates the feasibility and safety of CPCB-RPE1 subretinal implantation in a comparable animal model and provides an encouraging starting point for human studies.