Non-invasive transcranial alternating current stimulation of spatially resolved phosphenes [PDF]
Frontiers in Neuroscience, 2023 This study focused on the use of Non-Invasive Transcranial Alternating Current Stimulation (NITACS) to induce and map phosphenes (spark-like percepts in the visual field) in healthy individuals.
Faraz Sadrzadeh-Afsharazar
exaly +4 more sources
A Phosphenotron Device for Sensoric Spatial Resolution of Phosphenes within the Visual Field Using Non-Invasive Transcranial Alternating Current Stimulation [PDF]
SensorsThis study presents phosphenotron, a device for enhancing the sensory spatial resolution of phosphenes in the visual field (VF). The phosphenotron employs a non-invasive transcranial alternating current stimulation (NITACS) to modulate brain activity by ...
Faraz Sadrzadeh-Afsharazar +1 more
exaly +4 more sources
Evaluation of Phosphene Shifts During Eye Movements to Enhance Safe Visual Assistance for Visually Impaired Individuals [PDF]
BioengineeringHands-free visual assistive devices that consider the safety of the visually impaired have been researched, but many of them interfere with other senses, such as hearing.
Manami Kanamaru +2 more
doaj +2 more sources
Retinal Phosphenes Induced by Transorbital Electrical Stimulation: Influence of Light Adaptation, Electrode Montage, and View Direction [PDF]
LifeIn this study, the perception of phosphenes was used as a surrogate identifier for stimulation sites for use in retinal-degenerative diseases. We aimed to investigate the influence of adaptation, electrode montage, and direction of view on electrically ...
Alexander Hunold +6 more
doaj +2 more sources
Phosphenes and the effects of charged particles on the visual system [PDF]
Frontiers in NeurologyObjectiveReview the evidence from space travel crews, early and recent experiments in particle accelerators, and observations in patients undergoing heavy ions treatments for tumors of the eye or skull that charged particles act on the visual system ...
Simone Carozzo, Walter G. Sannita
doaj +2 more sources
Human achromatic flickers and phosphenes thresholds under extremely low frequency electric stimulations [PDF]
Scientific ReportsHuman exposure to extremely low-frequency (
Nicolas Bouisset +3 more
doaj +2 more sources
Spatially Localized Visual Perception Estimation by Means of Prosthetic Vision Simulation [PDF]
Journal of ImagingRetinal prosthetic devices aim to repair some vision in visually impaired patients by electrically stimulating neural cells in the visual system. Although there have been several notable advancements in the creation of electrically stimulated small dot ...
Diego Luján Villarreal +1 more
doaj +2 more sources
A computational model to design wide field-of-view optic nerve neuroprostheses [PDF]
iScienceSummary: Retinal stimulation (RS) allows restoring vision in blind patients, but it covers only a narrow region of the visual field. Optic nerve stimulation (ONS) has the potential to produce visual perceptions spanning the whole visual field, but it ...
Simone Romeni +6 more
doaj +2 more sources
Percepts evoked by multi-electrode stimulation of human visual cortex
Brain Stimulation, 2022 Background: Direct electrical stimulation of early visual cortex evokes the perception of small spots of light known as phosphenes. Previous studies have examined the location, size, and brightness of phosphenes evoked by stimulation of single electrodes.
William H. Bosking +5 more
doaj +1 more source
fMRI of retina-originated phosphenes experienced by patients with Leber congenital amaurosis. [PDF]
PLoS ONE, 2014 A phenomenon characterized by the experience of seeing light without any light actually entering the eye is called phosphenes or photopsias. Phosphenes can occur spontaneously or via induction by external stimuli.
Manzar Ashtari +7 more
doaj +1 more source