Results 141 to 150 of about 2,212,140 (191)
IEEE Transactions on Biomedical Engineering, 2016 Glaucoma is a neurological disorder leading to blindness initially through the loss of retinal ganglion cells, followed by loss of neurons higher in the visual system. Some work has been undertaken to develop prostheses for glaucoma patients targeting tissues along the visual pathway, including the lateral geniculate nucleus (LGN) of the thalamus, but ...
Faris Tarlochan +2 more
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The Microsystems Based Visual Prosthesis for Optic Nerve Stimulation
Artificial Organs, 2002 The microsystems based visual prosthesis (MiViP) visual prosthesis generates visual perceptions well below safety and stimulator saturation limits. These perceptions, called phosphenes, are of reasonably small size and are broadly distributed in the ...
M C Wanet-Defalque, C Veraart
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Proceedings of the IEEE, 2008 There are more than forty million blind individuals in the world whose plight would be greatly ameliorated by creating a visual prosthesis. We begin by outlining the basic operational characteristics of the visual system, as this knowledge is essential for producing a prosthetic device based on electrical stimulation through arrays of implanted ...
Mark S Humayun +2 more
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The Application of Computer Vision to Visual Prosthesis [PDF]
Artificial Organs, 2021 AbstractA visual prosthesis is an auxiliary device for patients with blinding diseases that cannot be treated with conventional surgery or drugs. It converts captured images into corresponding electrical stimulation patterns, according to which phosphenes are generated through the action of internal electrodes on the visual pathway to form visual ...
Yanling Han, Heng Li, Haiyi Zhu
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Artificial Organs, 2003
Abstract: Retinitis pigmentosa (RP) and age‐related macular degeneration (AMD) are incurable diseases that result in profound vision loss due to degeneration of the light sensing photoreceptors. However, the discovery that direct electrical stimulation of the retinal neurons creates visual sensation has inspired prosthetic devices aimed to restore ...
Wentai, Liu +4 more
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Abstract: Retinitis pigmentosa (RP) and age‐related macular degeneration (AMD) are incurable diseases that result in profound vision loss due to degeneration of the light sensing photoreceptors. However, the discovery that direct electrical stimulation of the retinal neurons creates visual sensation has inspired prosthetic devices aimed to restore ...
Wentai, Liu +4 more
openaire +2 more sources
A Model for Intracortical Visual Prosthesis Research
Artificial Organs, 2003Abstract: In the field of visual prosthesis research, it has generally been held that animal models are limited to testing the safety of implantable hardware due to the inability of the animal to provide a linguistic report of perceptions. In contrast, vision scientists make extensive use of trained animal models to investigate the links between ...
Stuart Cogan +2 more
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Toward the development of a color visual prosthesis
Journal of Neural Engineering, 2021Abstract Objective . All of the human prosthetic visual systems implanted so far have been achromatic. Schmidt et al (1996 Brain 119 507–22) reported that at low stimulation intensities their ...
Vernon L Towle +4 more
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Experimental Visual Prosthesis
Proceedings of the Institution of Electrical Engineers, 1973Of the methods available which seek artificially to replace the sensory input lost through blindness, the approach which should ultimately be of greatest value is that by which visual information is fed directly to the brain. The paper reviews earlier work in this field and describes a new prosthesis which gives grounds for optimism.
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Psychophysical Evaluation for Visual Prosthesis
Annual Review of Biomedical Engineering, 2008Vision restoration through retinal, optic nerve, and cortical implants is no longer just the stuff of fantasy. The design and development of visual prostheses rapidly move from the engineering phase toward preclinical and clinical trials, yet the benchmarks to determine their efficacy in blind research subjects have received very little attention, and
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