Please use this identifier to cite or link to this item: https://hdl.handle.net/10316/47352
Title: The Temporal Dynamics of Visual Processing in Multiple Sclerosis
Authors: Costa, Silvana Lopes 
Gonçalves, Oscar F. 
DeLuca, John 
Chiaravalloti, Nancy 
Chakravarthi, Ramakrishna 
Almeida, Jorge 
Keywords: Adult; Analysis of Variance; Female; Humans; Male; Middle Aged; Multiple Sclerosis; Neuropsychological Tests; Perceptual Disorders; Photic Stimulation; Psychomotor Disorders; Psychophysics; Reaction Time; Time Factors; Visual Perception
Issue Date: 2015
Serial title, monograph or event: Applied Neuropsychology: Adult
Volume: 23
Issue: 2
Abstract: Although the integrity of the visual system is often affected in multiple sclerosis (MS), the potential relationship between the temporal dynamics of visual processing and performance on neuropsychological tests assessing processing speed (PS) remains relatively unexplored. Here, we test if a PS deficit is related to abnormalities within the visual system, rather than impaired higher-level cognitive function. Two groups of participants with MS (1 group with PS deficits and another without) and a healthy control group, matched for age and education, were included. To explore the temporal dynamics of visual processing, we used 2 psychophysical paradigms: attention enhancement/prioritization and rapid serial visual presentation. Visual PS deficits were associated with a decreased capability to detect visual stimuli and a higher limitation in visual temporal-processing capacity. These results suggest that a latent sensorial temporal limitation of the visual system is significantly associated to PS deficits in MS.
URI: https://hdl.handle.net/10316/47352
DOI: 10.1080/23279095.2015.1020157
Rights: openAccess
Appears in Collections:I&D CINEICC - Artigos em Revistas Internacionais

Files in This Item:
File Description SizeFormat
Costaetal2016b.pdf875.37 kBAdobe PDFView/Open
Show full item record

SCOPUSTM   
Citations

12
checked on Mar 18, 2024

WEB OF SCIENCETM
Citations 10

12
checked on Mar 2, 2024

Page view(s) 20

654
checked on Mar 26, 2024

Download(s)

399
checked on Mar 26, 2024

Google ScholarTM

Check

Altmetric

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.