Results 21 to 30 of about 287,227 (299)

Steady-state visual evoked potentials differentiate between internally and externally directed attention

open access: yesNeuroImage, 2022
While attention to external visual stimuli has been extensively studied, attention directed internally towards mental contents (e.g., thoughts, memories) or bodily signals (e.g., breathing, heartbeat) has only recently become a subject of increased ...
Lior Kritzman   +5 more
doaj   +1 more source

Correlation of pattern reversal visual evoked potential parameters with the pattern standard deviation in primary open angle glaucoma [PDF]

open access: yes, 2014
AIM:To evaluate whether glaucomatous visual field defect particularly the pattern standard deviation (PSD) of Humphrey visual field could be associated with visual evoked potential (VEP) parameters of patients having primary open angle glaucoma (POAG ...
Pradeep Bokariya   +4 more
core   +1 more source

Decomposition of evoked potentials using peak detection and the discrete wavelet transform [PDF]

open access: yes, 2005
A new method of viewing evoked potential data is described. This method, called the peak detection method, is based on singularity detection using the discrete wavelet transform.
Cosic, I, Kumar, D, McCooey, C
core   +1 more source

Characteristics of Visual Evoked Potential in Different Parts of Visual Impairment

open access: yesFayixue Zazhi, 2021
ObjectiveTo study the quantitative and qualitative differences of visual evoked potential (VEP) in monocular visual impairment after different parts of visual pathway injury.MethodsA total of 91 subjects with monocular visual impairment caused by trauma ...
DAI Ding-kun   +4 more
doaj   +1 more source

Adaptive neural network filter for visual evoked potential estimation [PDF]

open access: yes, 1995
The authors describe a new approach to enhance the signal-to-noise-ratio (SNR) of visual evoked potential (VEP) based on an adaptive neural network filter. Neural networks are usually used in an nonadaptive way.
Chan, FHY   +4 more
core   +1 more source

Analogue mouse pointer control via an online steady state visual evoked potential (SSVEP) brain-computer interface [PDF]

open access: yes, 2011
The steady state visual evoked protocol has recently become a popular paradigm in brain–computer interface (BCI) applications. Typically (regardless of function) these applications offer the user a binary selection of targets that perform correspondingly
John J Wilson   +8 more
core   +1 more source

Pattern visual evoked potentials in dyslexic versus normal children

open access: yesJournal of Ophthalmic & Vision Research, 2015
Purpose: Presence of neurophysiological abnormalities in dyslexia has been a conflicting issue. This study was performed to evaluate the role of sensory visual deficits in the pathogenesis of dyslexia.
Javad Heravian   +7 more
doaj   +1 more source

Neural correlates of subjective timing precision and confidence [PDF]

open access: yes, 2020
Humans perceptual judgments are imprecise, as repeated exposures to the same physical stimulation (e.g. audio-visual inputs separated by a constant temporal offset) can result in different decisions. Moreover, there can be marked individual differences –
Arnold, D. H., Hohaia, W., Yarrow, K.
core   +1 more source

Test for Vigabatrin-Induced Field Defects in Children

open access: yesPediatric Neurology Briefs, 2002
A visual-evoked potential (VEP) technique for identifying visual field defects in children with epilepsy treated with vigabatrin has been developed at Aston University, Birmingham, and Cardiff University, UK.
J Gordon Millichap
doaj   +1 more source

Theta oscillations in visual cortex emerge with experience to convey expected reward time and experienced reward rate [PDF]

open access: yes, 2015
The primary visual cortex (V1) is widely regarded as faithfully conveying the physical properties of visual stimuli. Thus, experience-induced changes in V1 are often interpreted as improving visual perception (i.e., perceptual learning). Here we describe
Hussain Shuler, Marshall G.   +1 more
core   +1 more source

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