Results 161 to 170 of about 3,768 (215)
Large-scale RF mapping without visual input for neuroprostheses in macaque and human visual cortex
Lozano A +9 more
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An artifact-robust framework for measuring tCS effects during stimulation
Noury N, Damiani F, Siegel M.
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Vision Research, 1990
A low flux of X-rays below the Cerenkov energy threshold generates a phosphene by direct action on the retina without a fluorescence in the ocular media. X-rays above the Cerenkov threshold can generate only a faint luminescence in the lens and cornea.
exaly +3 more sources
A low flux of X-rays below the Cerenkov energy threshold generates a phosphene by direct action on the retina without a fluorescence in the ocular media. X-rays above the Cerenkov threshold can generate only a faint luminescence in the lens and cornea.
exaly +3 more sources
Neurology, 1979
Three adults with acquired unilateral visual impairment noticed phosphenes when they heard noises. They witnessed them only when resting in a dark or dimly illuminated room. The hallucinations persisted for days in a postkeratoplasty patient, for weeks in a patient with optic neuritis, and for months in a patient with compression of the optic nerve ...
S, Lessell, M M, Cohen
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Three adults with acquired unilateral visual impairment noticed phosphenes when they heard noises. They witnessed them only when resting in a dark or dimly illuminated room. The hallucinations persisted for days in a postkeratoplasty patient, for weeks in a patient with optic neuritis, and for months in a patient with compression of the optic nerve ...
S, Lessell, M M, Cohen
openaire +2 more sources
The sound-induced phosphene illusion
Experimental Brain Research, 2013Crossmodal illusions clearly show how perception, rather than being a modular and self-contained function, can be dramatically altered by interactions between senses. Here, we provide evidence for a novel crossmodal "physiological" illusion, showing that sounds can boost visual cortical responses in such a way to give rise to a striking illusory visual
BOLOGNINI, NADIA +3 more
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Feature accentuation in phosphenated images
2012 Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 2012We present and evaluate different approaches to feature accentuation in phosphenated images for different image resolutions. The goal of this study is to find methods to attract an implantee's visual attention to important image content like faces, obstacles or road signs.
Filiz Isabell Kiral-Kornek +3 more
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The Threshold for Phosphenes is Lower in Migraine
Cephalalgia, 2003We have reported a preliminary study confirming hyperexicitability of occipital cortex in migraine with aura (MwA) using transcranial magnetic stimulation (TMS). We have now completed a blinded study to investigate the occipital cortex in MwA and without aura (MwoA) compared with normal controls (NC) using TMS. TMS was performed using the Caldwell MES-
S K, Aurora, K M A, Welch, F, Al-Sayed
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The Phosphene of Quick Eye Motion
Archives of Ophthalmology, 1957Entoptic imagery, which refers to reproducible visible phenomena arising within the human eye, is not a neglected subject. With Purkinje9,10it was a major field of investigation; his fiery rings are related to the present study, but he did not describe the present phenomenon proper.
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Electrophysiology of the X-Ray Phosphene
Radiation Research, 1955This is the second of two papers dealing with the ability of ionizing radiations to arouse a sensation of light (a phosphene) on striking the eye. In the first paper (Lipetz, 1), the literature on the X-ray and radium phosphenes was critically reviewed.
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