Results 61 to 70 of about 3,768 (215)

Mechanisms of phosphenes in irradiated patients

Oncotarget, 2017
Anomalous visual perceptions have been reported in various diseases of the retina and visual pathways or can be experienced under specific conditions in healthy individuals. Phosphenes are perceptions of light in the absence of ambient light, occurring independently of the physiological and classical photonic stimulation of the retina.
Mathis, Thibaud, Vignot, Stephane, Leal, Cecila, Caujolle, Jean-Pierre, Maschi, Celia, Mauget-Faÿsse, Martine, Kodjikian, Laurent, Baillif, Stéphanie, Herault, Joel, Thariat, Juliette   +9 more
openaire   +2 more sources

Inhibition of Return Impairs Phosphene Detection [PDF]

Journal of Cognitive Neuroscience, 2012
Abstract Efficient visual exploration requires the ability to select possible target locations via spatial attention and to deselect previously inspected locations via inhibition of return (IOR). Although a great deal is known about the effects of spatial attention on processing in visual cortex, much less is known about the effects of ...
Daniel T. Smith, Keira Ball, Amanda Ellison   +2 more
openaire   +4 more sources

Black in Impressionism and Post‐Impressionism: Art, Color Vision, and Psychophysics

Color Research &Application, Volume 51, Issue 3, May/June 2026.
Black has engendered controversy in 19th Century color theory and in Impressionist and Post‐Impresssionist painting. The neural mechanisms of blackness perception are being revealed through contemporary psychophysics. ABSTRACT From Paleolithic cave art to modern abstraction, artists have used black not merely as a neutral tone, but as a powerful ...
John S. Werner
wiley   +1 more source

The behavioral responses of the fiddler crab, UCA PUGILATOR, to ionizing irradiation [PDF]

, 1964
Thesis (M.A.)--Boston University. Note: Page 24 is missing.Many animals, invertebrates as well as vertebrates, have demonstrated an ability to somehow sense ionizing irradiation.
Terwilliger, Robert Chapman
core  

Safety Aspects, Tolerability and Modeling of Retinofugal Alternating Current Stimulation [PDF]

, 2019
Background While alternating current stimulation (ACS) is gaining relevance as a tool in research and approaching clinical applications, its mechanisms of action remain unclear.
Brandt, Stephan A., Datta, Abhishek, Haberbosch, Linus, Jooß, Andreas, Köhn, Arvid, Rönnefarth, Maria, Schmidt, Sein, Scholz, Michael, Thomas, Chris   +8 more
core   +2 more sources

Mapping white matter tracts with SEEG electrodes

Epilepsia, Volume 67, Issue 3, Page 1090-1101, March 2026.
Abstract Objective Stereo‐electroencephalography (SEEG) is designed to record gray matter (GM) activity for epileptogenic zone localization. SEEG electrodes, however, traverse white matter (WM) pathways that connect regions involved in seizure networks and cognition.
Davide Giampiccolo, Jan van Dijk, Alejandro Granados, Fenglai Xiao, Giorgio Fiore, Roman Rodionov, Kuo Li, Aleksander Leon Lysomirski, Andrew W. McEvoy, Beate Diehl, John S. Duncan, Fahmida Chowdhury, Anna Miserocchi   +12 more
wiley   +1 more source

Human visual response to nuclear particle exposures [PDF]

, 1972
Experiments with accelerated helium ions were performed in an effort to localize the site of initial radiation interactions in the eye that lead to light flash observations by astronauts during spaceflight.
Budinger, T. F., Lyman, J. T., Tobias, C. A.   +2 more
core   +1 more source

Cortical stimulation consolidates and reactivates visual experience: neural plasticity from magnetic entrainment of visual activity [PDF]

, 2013
Delivering transcranial magnetic stimulation (TMS) shortly after the end of a visual stimulus can cause a TMS-induced ‘replay’ or ‘visual echo’ of the visual percept. In the current study, we find an entrainment effect that after repeated elicitations of
Halelamien, Neil, Liao, Hsin-I, Shimojo, Shinsuke, Wu, Daw-An   +3 more
core   +1 more source

The neural signature of phosphene perception

Human Brain Mapping, 2010
AbstractArtificial percepts (phosphenes) can be induced by applying transcranial magnetic stimulation (TMS) over human visual cortex. Although phosphenes have been used to study visual awareness, the neural mechanisms generating them have not yet been delineated. We directly tested the two leading hypotheses of how phosphenes arise.
Paul C J, Taylor, Vincent, Walsh, Martin, Eimer   +2 more
openaire   +3 more sources

Evidence for increased background neural noise in migraine with aura: Hyperactive but not hyperresponsive

Headache: The Journal of Head and Face Pain, Volume 66, Issue 3, Page 615-632, March 2026.
Abstract Objective This study had two aims: (1) to investigate the contrast gain in migraine and compare it to that in photosensitive epilepsy; (2) to explore any effects of colored spectacles (precision ophthalmic tints [POT]) on contrast gain. Background Individuals with migraine with aura (MA) typically show high amplitude electrophysiological ...
Louise O'Hare, Paul B. Hibbard, Arnold J. Wilkins   +2 more
wiley   +1 more source