Visual evoked potential latency predicts cognitive function in people with multiple sclerosis

Prior studies have reported an association between visual evoked potentials (VEPs) and cognitive performance in people with multiple sclerosis (PwMS), but the specific mechanisms that account for this relationship remain unclear. We examined the relationship between VEP latency and cognitive perform...

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Bibliographic Details
Published in:Journal of neurology 2021-11, Vol.268 (11), p.4311-4320
Main Authors: Covey, Thomas J., Golan, Daniel, Doniger, Glen M., Sergott, Robert, Zarif, Myassar, Srinivasan, Jared, Bumstead, Barbara, Wilken, Jeffrey, Buhse, Marijean, Mebrahtu, Samson, Gudesblatt, Mark
Format: Article
Language:English
Subjects:
Acuity
Cognitive ability
Executive function
Information processing
Latency
Medicine
Medicine & Public Health
Memory
Motor ability
Motor skill
Multiple sclerosis
Neurology
Neuroradiology
Neurosciences
Original Communication
Spatial memory
Visual evoked potentials
Visual perception
Visual system
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Summary:Prior studies have reported an association between visual evoked potentials (VEPs) and cognitive performance in people with multiple sclerosis (PwMS), but the specific mechanisms that account for this relationship remain unclear. We examined the relationship between VEP latency and cognitive performance in a large sample of PwMS, hypothesizing that VEP latency indexes not only visual system functioning but also general neural efficiency. Standardized performance index scores were obtained for the domains of memory, executive function, visual-spatial processing, verbal function, attention, information processing speed, and motor skills, as well as global cognitive performance (NeuroTrax battery). VEP P100 component latency was obtained using a standard checkerboard pattern-reversal paradigm. Prolonged VEP latency was significantly associated with poorer performance in multiple cognitive domains, and with the number of cognitive domains in which performance was ≥ 1 SD below the normative mean. Relationships between VEP latency and cognitive performance were significant for information processing speed, executive function, attention, motor skills, and global cognitive performance after controlling for disease duration, visual acuity, and inter-ocular latency differences. This study provides evidence that VEP latency delays index general neural inefficiency that is associated with cognitive disturbances in PwMS.
ISSN:0340-5354
1432-1459
DOI:10.1007/s00415-021-10561-2