Results 31 to 40 of about 4,659 (203)

Phosphenes [PDF]

open access: yesProceedings of the 2019 on Designing Interactive Systems Conference, 2019
Hybrid practices are emerging that integrate creative materials like paint, clay, and cloth with intangible immaterials like computation, electricity, and heat. This work aims to expand the design potential of immaterial elements by transforming them into manipulatable, observable and intuitive materials.
César Torres 0001   +3 more
openaire   +1 more source

Where Are the fMRI Correlates of Phosphene Perception?

open access: yesFrontiers in Neuroscience, 2018
Pulses of transcranial magnetic stimulation (TMS) over occipital cortex can induce transient visual percepts called phosphenes. Phosphenes are an interesting stimulus for the study of the human visual system, constituting conscious percepts without ...
Tom A. de Graaf   +7 more
doaj   +1 more source

Multi-electrode stimulation evokes consistent spatial patterns of phosphenes and improves phosphene mapping in blind subjects

open access: yesBrain Stimulation, 2021
Background: Visual cortical prostheses (VCPs) have the potential to restore visual function to patients with acquired blindness. Successful implementation of VCPs requires the ability to reliably map the location of the phosphene produced by stimulation ...
Denise Oswalt   +11 more
doaj   +1 more source

Use of cortical electrodes in solving visual prosthesis problems

open access: yesАнналы клинической и экспериментальной неврологии, 2017
There are two main approaches to visual function prosthesis in blindpatients with the use of brain-computer interfaces on the basisof either retinal or cortical stimulation by implanted electrodes. Themost complex in visual prosthesis is creation of the
B. Kh. Baziyan   +3 more
doaj   +1 more source

Mapping the visual brain areas susceptible to phosphene induction through brain stimulation. [PDF]

open access: yes, 2016
Transcranial magnetic stimulation (TMS) is a non-invasive brain stimulation technique whose effects on neural activity can be uncertain. Within the visual cortex, phosphenes are a useful marker of TMS: They indicate the induction of neural activation ...
Schaeffner, Lukas F, Welchman, Andrew E
core   +1 more source

Simulation of thalamic prosthetic vision: reading accuracy, speed, and acuity in sighted humans [PDF]

open access: yes, 2014
The psychophysics of reading with artificial sight has received increasing attention as visual prostheses are becoming a real possibility to restore useful function to the blind through the coarse, pseudo-pixelized vision they generate.
Crowell, Anne Marie   +2 more
core   +1 more source

A model of ganglion axon pathways accounts for percepts elicited by retinal implants. [PDF]

open access: yes, 2018
Degenerative retinal diseases such as retinitis pigmentosa and macular degeneration cause irreversible vision loss in more than 10 million people worldwide.
Beyeler, Michael   +5 more
core  

Downregulation of early visual cortex excitability mediates oscillopsia suppression [PDF]

open access: yes, 2017
© 2017 The Authors. Published by American Academy of Neurology. This is an open access article available under a Creative Commons licence. The published version can be accessed at the following link on the publisher’s website: https://doi.org/10.1212 ...
Adolfo Bronstein   +14 more
core   +1 more source

Phosphene phenomenon: A new concept [PDF]

open access: yesBiosystems, 2008
This paper proposes a new biopsychophysical concept of phosphene phenomenon. Namely, visual sensation of phosphenes is due to the intrinsic perception of ultraweak bioluminescent photon emission of cells in the visual system. In other words, phosphenes are bioluminescent biophotons in the visual system induced by various stimuli (mechanical, electrical,
openaire   +2 more sources

Large-scale mapping of artificial perceptions for neuroprostheses using spontaneous neuronal activity in macaque and human visual cortex

open access: yesBrain Stimulation
Background: High-channel-count neuroprostheses could one day restore functional vision in blind individuals by delivering electrical pulses to electrodes in the visual cortex that elicit perceptions known as ‘phosphenes’.
Antonio Lozano   +9 more
doaj   +1 more source

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