The effects of auditory distraction on visual cognitive performance in multiple sclerosis

Area of Science:

• Neuroscience
• Cognitive Psychology

Background:

• Cognitive dysfunction is a common symptom in multiple sclerosis (MS).
• Auditory distractions can exacerbate cognitive deficits in neurological conditions.

Purpose of the Study:

• To investigate the impact of auditory distraction on visual cognitive reaction time in individuals with MS.
• To compare performance under quiet conditions versus three distinct auditory distraction scenarios.

Main Methods:

• Twenty-two patients with mild relapsing-remitting MS and 17 healthy controls were assessed.
• Cognitive visual processing was evaluated using simple reaction time, choice reaction time, and visual working memory tasks.
• Performance was measured under quiet conditions and during auditory distractions: four-talker babble, word repetition, and a combination of both.

Main Results:

• Multiple sclerosis patients exhibited significantly slower reaction times (528 ms) compared to controls (459 ms) in quiet conditions.
• Auditory distraction, particularly word repetition combined with four-talker babble, significantly degraded cognitive performance in both groups.
• Subtle deficits in visual cognitive processing were observed in MS patients even with mild disease severity.

Conclusions:

• Auditory distraction can elicit subtle visual cognitive processing deficits in individuals with even mild multiple sclerosis.
• These findings highlight the importance of considering environmental factors in managing cognitive function in MS patients.