Modality-specific aspects of sustained and divided attentional performance in multiple sclerosis.

Area of Science:

• Neuroscience
• Cognitive Psychology
• Clinical Neurology

Background:

• Cognitive impairment is common in multiple sclerosis (MS).
• Attentional deficits are a key component of MS-related cognitive impairment.
• Systematic investigation of attentional profiles in MS is limited.

Purpose of the Study:

• To systematically assess sustained and divided attention in individuals with MS.
• To compare attentional performance between MS participants and healthy controls.
• To examine the impact of sensory modality (unimodal vs. bimodal) on attention in MS.

Main Methods:

• 30 individuals with MS and 30 healthy controls participated.
• Participants completed tasks measuring sustained and divided attention.
• Visual and auditory unimodal and bimodal trials were utilized.
• A three-factor mixed measures analysis of variance (ANOVA) was performed.

Main Results:

• MS participants demonstrated impaired speed and accuracy across all attention measures.
• Deficits were more pronounced in divided attention compared to sustained attention.
• Performance on bimodal trials was significantly worse than unimodal trials, especially for divided attention.

Conclusions:

• Multiple sclerosis significantly impacts both sustained and divided attention.
• Divided attention and processing multisensory information are particularly vulnerable in MS.
• Findings highlight the need for targeted cognitive interventions in MS management.