Results 171 to 180 of about 870,001 (220)
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Psychiatry Research, 1980
Data preprocessing, using principal components and Varimax rotation, was applied to 26 human average visual evoked potential (AVEP) variables representing bilateral amplitudes, latencies, and slopes from the P100 and N140 peaks. Five orthogonal factors, which accounted for about 80% of the variance, were found to describe the data from control subjects,
A M, Dymond +2 more
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Data preprocessing, using principal components and Varimax rotation, was applied to 26 human average visual evoked potential (AVEP) variables representing bilateral amplitudes, latencies, and slopes from the P100 and N140 peaks. Five orthogonal factors, which accounted for about 80% of the variance, were found to describe the data from control subjects,
A M, Dymond +2 more
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Age-related changes in amplitude, latency and specialization of ERP responses to faces and watches
Neuropsychology, development, and cognition. Section B, Aging, neuropsychology and cognition, 2020Healthy aging is associated with impairments in face recognition. While earlier research suggests that these impairments arise during memory retrieval, more recent findings suggest that earlier mechanisms, at the perceptual stage, may also be at play ...
I. Boutet +5 more
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Janaki Medical College Journal of Medical Science
Background & Objectives: Myopia or short-sightedness is rising globally, particularly among children and young adults with increased screen exposure. Visual evoked potentials (VEPs), measuring latencies and amplitudes, provide an objective assessment of ...
Penchha Nembang +5 more
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Background & Objectives: Myopia or short-sightedness is rising globally, particularly among children and young adults with increased screen exposure. Visual evoked potentials (VEPs), measuring latencies and amplitudes, provide an objective assessment of ...
Penchha Nembang +5 more
semanticscholar +1 more source
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 +1 more
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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 +1 more
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Electroencephalography and Clinical Neurophysiology/Evoked Potentials Section, 1988
The aim of this study was to determine the range of normal values of the latency of the P100 component of the VEP from a control population. Weighted least squares polynomial regression analysis showed that a quadratic curve best described the relationship between age and latency and separate curves, along with normal ranges, are presented for males ...
M C, Pitt, S J, Daldry
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The aim of this study was to determine the range of normal values of the latency of the P100 component of the VEP from a control population. Weighted least squares polynomial regression analysis showed that a quadratic curve best described the relationship between age and latency and separate curves, along with normal ranges, are presented for males ...
M C, Pitt, S J, Daldry
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Graefe's Archive for Clinical and Experimental Ophthalmology, 2004
To determine whether binocular summation in visual evoked cortical potential (VEP) is present in patients who have significantly different P100 peak latencies in their two eyes.Twelve patients with unilateral optic neuritis (ON) and 11 normal controls were studied.
Atsushi, Mizota +3 more
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To determine whether binocular summation in visual evoked cortical potential (VEP) is present in patients who have significantly different P100 peak latencies in their two eyes.Twelve patients with unilateral optic neuritis (ON) and 11 normal controls were studied.
Atsushi, Mizota +3 more
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2023
AbstractAim: The aim of the present study was to assess the normative data for VEP P100 latencies and amplitude innormal subjects.Methods: The study was conducted by the Department of Physiology, Netaji Subhas Medical College andHospital, Bihta, Patna, Bihar, India.
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AbstractAim: The aim of the present study was to assess the normative data for VEP P100 latencies and amplitude innormal subjects.Methods: The study was conducted by the Department of Physiology, Netaji Subhas Medical College andHospital, Bihta, Patna, Bihar, India.
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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
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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
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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 +4 more
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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 +4 more
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International Congress Series, 2005
Abstract We investigated changes in the P100 latency of the visual evoked potential by the hemifield pattern reversal stimulation during isometric contraction of the unilateral shoulder girdle elevator. Muscle contraction force was set at 20% of maximal voluntary contraction.
Kenji Kunita, Katsuo Fujiwara
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Abstract We investigated changes in the P100 latency of the visual evoked potential by the hemifield pattern reversal stimulation during isometric contraction of the unilateral shoulder girdle elevator. Muscle contraction force was set at 20% of maximal voluntary contraction.
Kenji Kunita, Katsuo Fujiwara
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