Results 141 to 150 of about 3,839 (161)

Large Difference in Latency of Visual Evoked Potential P100 Peak in Case of Pattern and Flash Stimulation in a Multiple Sclerosis Patient

Journal of Ophthalmic and Optometric Sciences, 2021
The visual evoked potential is one of the suitable techniques for the diagnosis of multiple sclerosis. There are two stimulation techniques, i.e., pattern reversal checkerboard and flash, to record visually evoked potential. Flash type of stimulation is used in patients with poor visual acuity.
Shushtarian, Seyed Mohammad Masoud, Fatemian, Nazanin   +1 more
openaire   +1 more source

Normative Data for Peak Latencies and Amplitudes of P100 wave of Pattern Reversal Visual Evoked Potential in Central Indian Population

International Journal of Physiology, 2019
Introduction The visual evoked potentials (VEP s) is an important diagnostic tool used by neurophysiologist, ophthalmologist, neurologists and neurosurgeons as many neurological disorders present with visual abnormalities, particularly when the clinical signs and the results of neuroimaging methods are either non informative or non-conclusive ...
Juhi Agrawal, Subodh Pandey, Vivek Som
openaire   +2 more sources

Influence of Pupillary Size on $$\overline {{\text{P100}}}$$ Latency Time of Pattern-Reversal VEP

1981
The relation existing between exit pupil of the eye and latency time of pattern-reversal VEP’s major positive component was evaluated. VEP recordings were performed on 5 healthy subjects. The exit pupil of the eye was varied either pharmacologically or by placing stops in front of the eye.
A. Penne, S. Fonda
openaire   +1 more source

Visual evoked potentials N75 and P100 latencies correlate with urinary δ-aminolevulinic acid, suggesting γ-aminobutyric acid involvement in their generation

Journal of the Neurological Sciences, 1995
Pattern reversal visual evoked potentials were recorded from 31 subjects who were occupationally exposed to lead and 54 non-exposed controls. No significant effects of lead were observed in the general subject population. However, when only non-smokers (17 lead-exposed and 27 controls) were evaluated, significant effects were found.
B M, Solliway, A, Schaffer, H, Pratt, N, Mittelman, S, Yannai   +4 more
openaire   +2 more sources

[Effect of cephalic perimeter and temperature on the latency and amplitude of the P100 component of the visual evoked potential].

Archivos de neurobiologia, 1990
Pattern reversal evoked potentials were recorded from 40 people (20 males and 20 females) in good health. Latency and amplitude of P100 as well as cephalic perimeter and temperature were measured. Both samples did not differ in age. Males had a greater cephalic perimeter (p less than 0.00001) and females had a greater temperature (p less than 0.05 ...
J, Oliván Palacios, F, Alvarez Velasco, M L, Cubero Lorenzo   +2 more
openaire   +1 more source

Latency Differences of N20, P40/N60, P100/N140 SEP Components after Stimulation of Proximal and Distal Sites of the Median Nerve

Clinical EEG and Neuroscience, 2006
The latencies of SEP N20, P40, N60, P100, and N140 components were measured after stimulation of two different sites, and the differences in relation to conduction velocity and their central functions are discussed. Subjects were 8 healthy right-handed males (age 22–31 years, height 164–184 cm).
openaire   +2 more sources

[Long-term prolongation of direct pupillary light reflex latency and P100 latency of pattern visual evoked potential in unilateral optic neuritis].

Nippon Ganka Gakkai zasshi, 1995
We evaluated the visual functions of visual acuity, color sense, direct pupillary light reflex and pattern visual evoked potentials (P100) in five patients with unilateral optic neuritis whose visual acuity improved to 1.0 or better in order to assess the recovery of the impaired optic nerve fibers from the inflammatory process.
S, Chin, Y, Suzuki, T, Ohashi, M, Kase
openaire   +1 more source

Influence of primary open angle glaucoma on pattern visual evoked potentials P100 latency

2013
Purpose: The purpose of this study was to assess factors, influencing P100 latency prolongation in primary open angle glaucoma (POAG) patients. Methods: Patients group consisted of 63 adults (age 49 - 70). Controls group consisted of 70 individuals (age 45 - 74).
Gelžinis, Arvydas, Surkys, Tadas, Bulatov, Aleksandr, Jašinskas, Vytautas   +3 more
openaire   +1 more source

P21.6 The meaning of visual acuity on the latency of P100

Clinical Neurophysiology, 2011
F. Pucci, M. Sturniolo, A. Labate, M. Cretella, U. Aguglia, M. Zappia, D. Messina, B. Calabrese, M. Cannataro, A. Quattrone, A. Gambardella   +10 more
openaire   +1 more source

Utilizing P100 Wave Latency to Enhance The Accuracy of Diagnosing Multiple Sclerosis and Neuromyelitis Optica Spectrum Disorder (S19.004)

Neurology, 2022
Mais Garah, Lama Rayyis, Gulzar Kareem, Manal Badawi, Ahmed Basndowah, Areej Bushnaq, Edward Cupler, Ahmad Hassan, Fawzi Babtain   +8 more
openaire   +1 more source