Importance of contrast sensitivity to high and low spatial frequency and artificial neural networks for visual impairment in multiple sclerosis

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Field Value
 
Title Importance of contrast sensitivity to high and low spatial frequency and artificial neural networks for visual impairment in multiple sclerosis
 
Creator Jakina Guimaraes, Vieira-Gutemberg
Lucia de Bustamante, Simas Maria
Antonio, Santos Natanael
 
Subject


 
Description This research compared contrast sensitivity CS to high and low spatial frequency of angular frequency stimuli and sine wave gratings respectively to assess adults diagnosed with multiple sclerosis MS MS with optic neuritis ON MSON and control We also investigated whether the involved cognitive impairments affect CS and whether the technique of artificial neural network ANN coupled with the CS to only two spatial frequencies correctly predict MS The present cross sectional study measured CS of adults MS MSON and control years old that used a psychophysical procedure designed with the forced choice method The t test for independent samples showed that the CS was better in the control followed by MS and MSON The MSON group had lower CS values at all tested angular frequency stimuli and low sine wave gratings as well p lt The frequency cycles deg and cpd were the ones that best differentiated the groups surveyed The neuropsychological test stroop was the only one to yield a difference between groups p lt There was no correlation between the psychophysical measures and the protocols of optical coherence tomography These data suggest that visual impairments found in MS and MSON are related to CS The ANN architecture was successful in separating people with MS from controls by using the spatial frequencies of cycles ordm and cpd that showed good correlation performance in the test phase Research employing this perspective will proceed with the main purpose of verifying the extent to which the use of CS for sine wave gratings and angular frequency stimuli are relevant in the early assessment of MS
 
Publisher Advances in Ophthalmology & Visual System
 
Contributor
 
Date 2015-11-01
 
Type info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
 
Format application/pdf
text/html
 
Identifier https://medcrave.org/index.php/AOVS/article/view/5550
 
Source Advances in Ophthalmology & Visual System; Vol 3, No 3 (2015): Issue 2
2377-4290
 
Language eng
 
Relation https://medcrave.org/index.php/AOVS/article/view/5550/10398
https://medcrave.org/index.php/AOVS/article/view/5550/10402
 
Rights Copyright (c) 2020 Vieira Gutemberg Vieira Gutemberg Simas Maria Simas Maria Santos Natanael Santos Natanael
https://creativecommons.org/licenses/by-nc/4.0
 

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