Selective Attention and Information Processing-Speed in Multiple Sclerosis Patients versus Non-patients Based on Depression, Anxiety and Stress Status

Cognitive dysfunctions are commonly seen in patients with multiple sclerosis (MS). The aim of this study was to compare the selective attention and information processing speed in MS patients versus non-patients considering their level of depression، anxiety and stress. This causal-comparative investigation recruited 108 participants (54 relapsing- remitting MS patients and 54 non-patients). DASS-2 questionnaire and computerized Stroop test were administered to all enrolled subjects. Results revealed a significant difference for selective attention and information processing-speed between the two groups. There were differences in cognitive function when considering the level of depression، anxiety and stress. Meanwhile، we observed no difference between male and female subjects. MS may potentially result in impaired selective attention and information processing-speed. Besides، depression، anxiety and stress can intensify such cognitive impairments.