17 papers · ranked by Valyu relevance
Ruchi Kothari, Pradeep Bokariya, Smita Singh, Ramji Singh
Visual information is fundamental to how we appreciate our environment and interact with others. The visual evoked potential (VEP) is among those evoked potentials that are the bioelectric signals generated in the striate and extrastriate cortex when the retina is stimulated with light which can be recorded from the…
Gianluca Coppola, Martina Bracaglia, Davide Di Lenola, Cherubino Di Lorenzo + 7 more
'Cherubino Di Lorenzo' 'Mariano Serrao' 'Vincenzo Parisi' 'Antonio Di Renzo' 'Francesco Martelli' 'Antonello Fadda' 'Jean Schoenen' 'Francesco Pierelli'] Background Patients suffering from migraine with aura can have either pure visual auras or complex auras with sensory disturbances and dysphasia, or both. Few studies…
Alexander Muacevic, John R Adler, Ruchi Kothari, Sujay Srivastava + 6 more
'Azhar Sheikh' 'Ashay Gomashe' 'Alind Murkhe' 'Naveenkumar Nallathambi' 'Suryadev Vrindavanam' 'Prashanth A'] Background Visual evoked potential (VEP) is a noninvasive investigation conducted to identify abnormalities in the visual system. It is especially suitable for young children who are unable to express visual…
Kieran S Mohr, Anna C Geuzebroek, Simon P Kelly
Central to our understanding of how visual evoked potentials (VEPs) contribute to visual processing is the question of where their anatomical sources are. Three well-established measures of low-level visual cortical activity are widely used: the first component (“C1”) of the transient and multifocal VEP, and the…
P. Voda, J. Kremláček, D. Kordek, M. Chutná + 1 more
A rapid checkerboard pattern change is used to elicit pattern-reversal visual evoked potentials (PR VEPs). CRT or LCD monitors do not allow immediate reversal of the entire pattern. The study aimed to construct a new stimulator whose characteristics approximate an instantaneous reversal and verify whether the…
Nicholas R. Waytowich, Vernon J. Lawhern, Javier O. Garcia, Jennifer Cummings + 3 more
'Jennifer Cummings' 'Josef Faller' 'Paul Sajda' 'Jean M. Vettel'] Objective. Steady-State Visual Evoked Potentials (SSVEPs) are neural oscillations from the parietal and occipital regions of the brain that are evoked from flickering visual stimuli. SSVEPs are robust signals measurable in the electroencephalogram (EEG)…
Xiaowei Zheng, Guanghua Xu, Kai Zhang, Renghao Liang + 5 more
'Peiyuan Tian' 'Yaguang Jia' 'Sicong Zhang' 'Chenghang Du'] Visual evoked potential (VEP) has been used as an alternative method to assess visual acuity objectively, especially in non-verbal infants and adults with low intellectual abilities or malingering. By sweeping the spatial frequency of visual stimuli and…
Mathieu Seraphim, Marie Alice Laville, Jean Claude Quintyn, Juliette Thariat
Introduction Visual electrophysiology, including electroretinograms (ERG) and visual evoked potentials (VEP), provides a real-time functional assessment of retinal and post-retinal pathways, complementing structural imaging. Subtypes such as transient, periodic, multifocal, and code-modulated signals probe distinct…
Bartu Atabek, Efecan Yilmaz, Cengiz Acartürk, Murat Perit Çakır
—Objective: This paper proposes a novel type of stimulus in the shape of sinusoidal gratings displayed with an imperceptibly high-frequency motion. The stimulus has been designed for use in BCI (Brain Computer Interface) applications that employ visually evoked potentials (VEPs) in an effort to mitigate discomfort…
Harvey Huang, Kendrick N. Kay, Nicholas M. Gregg, Gabriela Ojeda Valencia + 6 more
Electrical stimulation is increasingly used to modulate brain networks for clinical purposes. The basic unit of neurostimulation, a single electrical pulse, can travel through white matter to influence connected neuronal populations. However, the mechanisms by which it influences connected populations is not well…
Víctor Manuel Hidalgo, Carlos Andrés Bazaes, Juan‐Carlos Letelier
Virtual and mixed reality (VR, MR) technologies offer a powerful solution for on-the-ground flight training curricula. While these technologies offer safer and cheaper instructional programs, it is still unclear how they impact neuronal brain dynamics. Indeed, MR simulations engage students in a strange mix of…
S Ladouce, F Dehais
Steady-State Visually Evoked Potentials (SSVEP) manifest as a sustained rhythmic activity that can be observed in surface electroencephalography (EEG) in response to periodic visual stimuli, commonly referred to as flickers. SSVEPs are widely used in fundamental cognitive neuroscience paradigms and Brain-Computer…
Hanneke Scheppink, Rainer Herpers, Jordy Thielen, Ivan Volosyak
A code-modulated motion visual evoked potential (c-MVEP) for brain-computer interfacing (BCI) is presented in this study. This paradigm uses pseudo-random sequences to visually stimulate objects using motion as an alternative to flickering. In an offline experiment of this study, EEG data were recorded and compared…
Daiki Aminaka, Shoji Makino, Tomasz M. Rutkowski
— We present results of an approach to a code– modulated visual evoked potential (cVEP) based brain– computer interface (BCI) paradigm using four high–frequency flashing stimuli. To generate higher frequency stimulation compared to the state–of–the–art cVEP–based BCIs, we propose to use the light–emitting diodes (LEDs)…
Arturo Micheli, Davide Consoli, Adrien Merlini, Paolo Ricci + 1 more
'Francesco P. Andriulli'] Abstract— Brain-Computer Interfaces (BCIs) based on Steady State Visually Evoked Potentials (SSVEPs) have proven effective and provide significant accuracy and informationtransfer rates. This family of strategies, however, requires external devices that provide the frequency stimuli required…
Emily C. Cunningham, David Brang
Sounds produce rapid responses in human visual cortex. Animal research suggests that these responses are enabled by corticocortical projections from auditory to visual cortex. To test for the presence of such pathways in humans, we examined intracranial responses to direct electrical stimulation. Stimulation over…
Michael Beyeler, Ariel Rokem, Geoffrey M. Boynton, Ione Fine
The “bionic eye” – so long a dream of the future – is finally becoming a reality with retinal prostheses available to patients in both the US and Europe. However, clinical experience with these implants has made it apparent that the vision provided by these devices differs substantially from normal sight. Consequently…