Results 1 to 10 of about 29,961 (110)
An update on visual prosthesis
International Journal of Retina and Vitreous, 2023 Abstract Purpose To review the available evidence on the different retinal and visual prostheses for patients with retinitis pigmentosa and new implants for other indications including dry age-related macular degeneration.
Kailyn A. Ramirez +4 more
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Perception, 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 ...
Peter H, Schiller, Edward J, Tehovnik
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Visual cortical prosthesis: an electrical perspective [PDF]
Journal of Medical Engineering & Technology, 2020 The electrical stimulation of the visual cortices has the potential to restore vision to blind individuals. Until now, the results of visual cortical prosthetics has been limited as no prosthesis has restored a full working vision but the field has shown a renewed interest these last years thanks to wireless and technological advances. However, several
Léo Pio-Lopez +3 more
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Optimization of Visual Information Presentation for Visual Prosthesis [PDF]
International Journal of Biomedical Imaging, 2018 Visual prosthesis applying electrical stimulation to restore visual function for the blind has promising prospects. However, due to the low resolution, limited visual field, and the low dynamic range of the visual perception, huge loss of information occurred when presenting daily scenes.
Fei Guo, Yuan Yang, Yong Gao
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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 ...
Jing Wang +6 more
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Visual Prosthesis: Artificial Vision [PDF]
Medical Journal Armed Forces India, 2009 In the normal visual pathway, light travels through the tear film, cornea, aqueous, pupil, lens, and vitreous, to activate the light sensitive photoreceptors and set up the trans-synaptic connections of the retina (Fig. 1). In cases where there is gross destruction of the eye like phthisis bulbi, restoration of vision is not possible. But in conditions
D P Vats +5 more
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Reading Visual Braille with a Retinal Prosthesis [PDF]
Frontiers in Neuroscience, 2012 Retinal prostheses, which restore partial vision to patients blinded by outer retinal degeneration, are currently in clinical trial. The Argus II retinal prosthesis system was recently awarded CE approval for commercial use in Europe. While retinal prosthesis users have achieved remarkable visual improvement to the point of reading letters and short ...
Thomas Zaccarin Lauritzen +9 more
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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 ...
Hieu T. Nguyen +6 more
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A robot hand testbed designed for enhancing embodiment and functional neurorehabilitation of body schema in subjects with upper limb impairment or loss. [PDF]
, 2015 Many upper limb amputees experience an incessant, post-amputation "phantom limb pain" and report that their missing limbs feel paralyzed in an uncomfortable posture.
Eric eChang +5 more
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Action and non-action oriented body representations. insight from behavioural and grey matter modifications in individuals with lower limb amputation [PDF]
, 2018 Following current model of body representations, we aimed to systematically investigate the association between brain modifications, in terms of grey matter loss, and body representation deficits, in terms of alterations of the body schema (BS) and of ...
Boccia, Maddalena +8 more
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