The role of nitric oxide on visual-evoked potentials in MPTP-induced Parkinsonism in mice

2014 ◽  
Vol 72 ◽  
pp. 48-57 ◽  
Author(s):  
Sinem Aras ◽  
Gamze Tanriover ◽  
Mutay Aslan ◽  
Piraye Yargicoglu ◽  
Aysel Agar
Keyword(s):  
Nitric Oxide ◽  
Evoked Potentials ◽  
Visual Evoked Potentials ◽  
Visual Evoked

scholarly journals Using advanced analysis of multifocal visual-evoked potentials to evaluate the risk of clinical progression in patients with radiologically isolated syndrome

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
J. M. Miguel ◽  
M. Roldán ◽  
C. Pérez-Rico ◽  
M. Ortiz ◽  
L. Boquete ◽  
...  
Keyword(s):  
Evoked Potentials ◽  
Visual Evoked Potentials ◽  
Area Under The Curve ◽  
Multifocal Visual Evoked Potentials ◽  
Radiologically Isolated Syndrome ◽  
Advanced Analysis ◽  
The Time Domain ◽  
Visual Evoked

AbstractThis study aimed to assess the role of multifocal visual-evoked potentials (mfVEPs) as a guiding factor for clinical conversion of radiologically isolated syndrome (RIS). We longitudinally followed a cohort of 15 patients diagnosed with RIS. All subjects underwent thorough ophthalmological, neurological and imaging examinations. The mfVEP signals were analysed to obtain features in the time domain (SNRmin: amplitude, Latmax: monocular latency) and in the continuous wavelet transform (CWT) domain (bmax: instant in which the CWT function maximum appears, Nmax: number of CWT function maximums). The best features were used as inputs to a RUSBoost boosting-based sampling algorithm to improve the mfVEP diagnostic performance. Five of the 15 patients developed an objective clinical symptom consistent with an inflammatory demyelinating central nervous system syndrome during follow-up (mean time: 13.40 months). The (SNRmin) variable decreased significantly in the group that converted (2.74 ± 0.92 vs. 4.07 ± 0.95, p = 0.01). Similarly, the (bmax) feature increased significantly in RIS patients who converted (169.44 ± 24.81 vs. 139.03 ± 11.95 (ms), p = 0.02). The area under the curve analysis produced SNRmin and bmax values of 0.92 and 0.88, respectively. These results provide a set of new mfVEP features that can be potentially useful for predicting prognosis in RIS patients.

scholarly journals Role of inter-hemispheric transfer in generating visual evoked potentials in V1-damaged brain hemispheres

2015 ◽  
Vol 68 ◽  
pp. 82-93 ◽  
Author(s):  
Voyko Kavcic ◽  
Regina L. Triplett ◽  
Anasuya Das ◽  
Tim Martin ◽  
Krystel R. Huxlin
Keyword(s):  
Evoked Potentials ◽  
Visual Evoked Potentials ◽  
Brain Hemispheres ◽  
Visual Evoked

scholarly journals A Comprehensive Review on Methodologies Employed for Visual Evoked Potentials

Scientifica ◽  
2016 ◽  
Vol 2016 ◽  
pp. 1-9 ◽  
Author(s):  
Ruchi Kothari ◽  
Pradeep Bokariya ◽  
Smita Singh ◽  
Ramji Singh
Keyword(s):  
Evoked Potentials ◽  
Visual Evoked Potentials ◽  
Visual Processing ◽  
Visual Information ◽  
Extrastriate Cortex ◽  
Historical Aspect ◽  
Clinical Disorders ◽  
Bioelectric Signals ◽  
Visual Evoked

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 scalp electrodes. In the current paper, we provide an overview of the various modalities, techniques, and methodologies which have been employed for visual evoked potentials over the years. In the first part of the paper, we cast a cursory glance on the historical aspect of evoked potentials. Then the growing clinical significance and advantages of VEPs in clinical disorders have been briefly described, followed by the discussion on the earlier and currently available methods for VEPs based on the studies in the past and recent times. Next, we mention the standards and protocols laid down by the authorized agencies. We then summarize the recently developed techniques for VEP. In the concluding section, we lay down prospective research directives related to fundamental and applied aspects of VEPs as well as offering perspectives for further research to stimulate inquiry into the role of visual evoked potentials in visual processing impairment related disorders.

Optic gliomas in neurofibromatosis type 1: Role of visual evoked potentials

1994 ◽  
Vol 10 (2) ◽  
pp. 117-123 ◽  
Author(s):  
Kathryn North ◽  
Cheryl Cochineas ◽  
Edward Tang ◽  
Elizabeth Fagan
Keyword(s):  
Evoked Potentials ◽  
Visual Evoked Potentials ◽  
Neurofibromatosis Type 1 ◽  
Neurofibromatosis Type ◽  
Visual Evoked

scholarly journals Role of Visual Evoked Potentials in Multiple Sclerosis

2014 ◽  
Vol 56 (4) ◽  
pp. 417-421
Author(s):  
Ammar A. Thame ◽  
◽  
Najeeb H. Mohammed ◽  
Akram M. Ibrahim ◽  
◽  
...  
Keyword(s):  
Multiple Sclerosis ◽  
Evoked Potentials ◽  
Visual Evoked Potentials ◽  
Visual Evoked
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