Results 41 to 50 of about 3,768 (215)

Towards unravelling reading-related modulations of tDCS-induced neuroplasticity in the human visual cortex

Frontiers in Psychology, 2014
Stimulation using weak electrical direct currents has shown to be capable of inducing polarity dependent diminutions or elevations in motor and visual cortical excitability.
Andrea eAntal, Geza G Ambrus, Leila eChaieb   +2 more
doaj   +1 more source

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

, 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

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, Laura Cyckowski, Alborz Yazdi, Amanda Viands, Kathleen Marshall, István Bókkon, Albert Maguire, Jean Bennett   +7 more
doaj   +1 more source

Noninvasive brain stimulation techniques can modulate cognitive processing [PDF]

, 2019
Recent methods that allow a noninvasive modulation of brain activity are able to modulate human cognitive behavior. Among these methods are transcranial electric stimulation and transcranial magnetic stimulation that both come in multiple variants.
Herrmann, Christoph S., Strüber, Daniel, Thut, Gregor, Veniero, Domenica   +3 more
core   +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

Sequence of visual cortex stimulation affects phosphene brightness in blind subjects

Brain Stimulation, 2022
Background: Visual cortical prostheses (VCP) could potentially benefit a majority of the blind population. Feasibility testing of these VCP opens new avenues to characterize stimulation of visual cortex in blind subjects.
Michelle Armenta Salas, Joseph Bell, Soroush Niketeghad, Denise Oswalt, William Bosking, Uday Patel, Jessy D. Dorn, Daniel Yoshor, Robert Greenberg, Ausaf Bari, Nader Pouratian   +10 more
doaj   +1 more source

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

, 2018
Degenerative retinal diseases such as retinitis pigmentosa and macular degeneration cause irreversible vision loss in more than 10 million people worldwide.
Beyeler, Michael, Boynton, Geoffrey M, Fine, Ione, Nanduri, Devyani, Rokem, Ariel, Weiland, James D   +5 more
core  

Phosphene phenomenon: A new concept [PDF]

Biosystems, 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

Explainable AI‐Driven Optimization of Electrode Activation Reduces Power Consumption While Preserving Object Recognition in Retinal Prostheses

Advanced Intelligent Systems, EarlyView.
Explainable artificial intelligence (XAI) guides selective electrode activation in retinal prostheses by emphasizing visually informative regions. XAI‐assisted phosphene generation maintains object recognition performance while significantly reducing stimulation power.
Sein Kim, Hamin Shim, Maesoon Im
wiley   +1 more source

A framework for the first‑person internal sensation of visual perception in mammals and a comparable circuitry for olfactory perception in Drosophila [PDF]

, 2015
Perception is a first-person internal sensation induced within the nervous system at the time of arrival of sensory stimuli from objects in the environment.
A Cowey, A Peters, A Polsky, A Selimbeyoglu, A Yuille, AB Watson, AC Burette, AC Paulk, AJ Harding, AL Jacob, AM Wong, AP Alivisatos, B Malnic, BG Cragg, C Boucsein, CA Ramachandra, CM Gray, CR Gallistel, D Feldmeyer, D Ferster, D Foerster, D Marr, D Marr, D Selton, DA Baylor, DC Knill, DH Hubel, DH Hubel, DH Hubel, DK Murphey, DM LeNeveu, E Marder, E Marg, EA Hallem, EA Hallem, EC Marin, EJ Hong, EM Schmidt, F Leiss, F Wang, FS Cohen, G Laurent, GB Melikyan, GS Brindley, GS Brindley, GS Jefferis, GS Suh, H Barlow, H Hatfield, H Kazama, I Bokkon, I Rock, J Cichon, J Israelachvili, J Silvanto, JA Fodor, JC Horton, JL McClelland, JP Taylor, JW Wang, K Friston, K Ohki, K Yasuyama, KI Vadakkan, KI Vadakkan, KI Vadakkan, KI Vadakkan, KJ Ressler, KM Hagihara, KM Harris, L Buck, L Palmer, LB Merabet, LB Vosshall, LF Abbott, LM Palmer, M Bruyne de, M Kanduč, M Ng, M Stopfer, M Tsodyks, MC Potter, ME Larkum, ME Sheffield, ML Schlief, MM Kozlov, MS Beauchamp, N Buonviso, N Spruston, NJ Butcher, NK Tanaka, NW Gouwens, OJ Grusser, P Fries, P Mombaerts, PA Merton, PD Wilson, PJ Clyne, Q Gao, Q Zaidi, R Vassar, R Ventura, RB Laughlin, RB Tootell, RF Stocker, RI Wilson, RI Wilson, RI Wilson, RP Rand, S Edelman, S Grillner, S Grossberg, S Hecht, S Herculano-Houzel, S Konur, S Lasserre, S Martens, SD Antic, SJ Caron, SK Herbst, SL Leikin, SR Shanbhag, SW Oh, T Kammer, T Kenet, TA Woolsey, TL Davis, V Bhandawat, VB Mountcastle, VB Mountcastle, W Regehr, Y Shang, Y Wang   +132 more
core   +2 more sources