Results 11 to 20 of about 4,659 (203)

Development of a smartphone virtual reality game to support the radiation therapy of children and adolescents in proton centers

Frontiers in Pediatrics, 2023
IntroductionFor most patients, cancer therapy with radiation is a new experience coming with many unknown challenges. This can be stressful, particularly for children and adolescents.
Leonardo Schenck, Leonardo Schenck, Christian Bäumer, Christian Bäumer, Christian Bäumer, Christian Bäumer, Björn Ross, Gabriele Schäfer, Gabriele Schäfer, Nicole Stember, Nicole Stember, Heike Thomas, Heike Thomas, Heike Thomas, Stefan Stieglitz, Beate Timmermann, Beate Timmermann, Beate Timmermann, Beate Timmermann   +18 more
doaj   +1 more source

Characterization of visual percepts evoked by noninvasive stimulation of the human posterior parietal cortex. [PDF]

PLoS ONE, 2011
Phosphenes are commonly evoked by transcranial magnetic stimulation (TMS) to study the functional organization, connectivity, and excitability of the human visual brain. For years, phosphenes have been documented only from stimulating early visual areas (
Peter J Fried, Seth Elkin-Frankston, Richard Jarrett Rushmore, Claus C Hilgetag, Antoni Valero-Cabre   +4 more
doaj   +1 more source

Design of Electrode Placement for Presenting Phosphenes in the Lower Visual Field Based on Electric Field Simulation

Applied Sciences, 2021
Presenting visual information, called phosphenes, is a critical method for providing information on the position of obstacles for users of walking support tools for the visually impaired.
Manami Kanamaru, Phan Xuan Tan, Eiji Kamioka   +2 more
doaj   +1 more source

Amplitude modulated transcranial alternating current stimulation (AM-TACS) efficacy evaluation via phosphene induction

Scientific Reports, 2021
Amplitude modulated transcranial alternating current stimulation (AM-tACS) is a novel method of electrostimulation which enables the recording of electrophysiological signals during stimulation, thanks to an easier removable stimulation artefact compared
Carsten Thiele, Tino Zaehle, Aiden Haghikia, Philipp Ruhnau   +3 more
doaj   +1 more source

Inducing lateralized phosphenes over the occipital lobe using transcranial magnetic stimulation to navigate a virtual environment.

PLoS ONE, 2021
Electrical stimulation involving visual areas of the brain produces artificial light percepts called phosphenes. These visual percepts have been extensively investigated in previous studies involving intracortical microsimulation (ICMS) and serve as the ...
Adonay N Gebrehiwot, Tatsuya Kato, Kimitaka Nakazawa   +2 more
doaj   +1 more source

Simulation-Based Designing of Suitable Stimulation Factors for Presenting Two Phosphenes Simultaneously to Lower Side of Field of View

Bioengineering, 2022
Using a phosphene has been discussed as a means of informing the visually impaired of the position of an obstacle. Obstacles underfoot have a risk, so it is necessary to inform the visually impaired.
Manami Kanamaru, Phan Xuan Tan, Eiji Kamioka   +2 more
doaj   +1 more source

Phosphene Expressionism

, 2021
The shifting forms and colours visible on the inside of our eyelids in a darkened room are produced by phosphenes -- particles of light emitted from cells within the retina, which are detected by the optic nerve and imaged by the visual cortex. In this presentation, we briefly review how phosphenes have been the subject of contemporary artworks and are
Garbutt, Michael, ROENPAGEL, NICO, Transdisciplinary Imaging Conference, Dark Eden   +2 more
openaire   +3 more sources

A model for the origin and properties of flicker-induced geometric phosphenes. [PDF]

PLoS Computational Biology, 2011
We present a model for flicker phosphenes, the spontaneous appearance of geometric patterns in the visual field when a subject is exposed to diffuse flickering light.
Michael Rule, Matthew Stoffregen, Bard Ermentrout   +2 more
doaj   +1 more source

Observations by human subjects on radiation- induced light flashes in fast-neutron, X-ray, and positive-pion beams [PDF]

, 1970
Exposure of human subjects to fast neutron beam to determine cause of light flashes observed by astronauts on lunar ...
Budinger, T. F., Lyman, J. T., Tobias, C. A.   +2 more
core   +4 more sources

Clinical Progress and Optimization of Information Processing in Artificial Visual Prostheses

Sensors, 2022
Visual prostheses, used to assist in restoring functional vision to the visually impaired, convert captured external images into corresponding electrical stimulation patterns that are stimulated by implanted microelectrodes to induce phosphenes and ...
Jing Wang, Rongfeng Zhao, Peitong Li, Zhiqiang Fang, Qianqian Li, Yanling Han, Ruyan Zhou, Yun Zhang   +7 more
doaj   +1 more source