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Dual-Tasking in Multiple Sclerosis - Implications for a Cognitive Screening Instrument.

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Multiple sclerosis (MS) patients show significant deficits in dual-tasking, particularly in complex situations, impacting executive functions. These findings highlight the need for targeted cognitive assessments in MS management.

Keywords:
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Area of Science:

  • Neuroscience
  • Cognitive Psychology
  • Clinical Neurology

Background:

  • Cognitive function monitoring is crucial for multiple sclerosis (MS) management.
  • Everyday cognitive processes, such as dual-tasking, are often overlooked in MS assessments.
  • Understanding dual-tasking deficits is essential for comprehensive MS care.

Purpose of the Study:

  • To investigate dual-task performance in multiple sclerosis (MS) patients using a psychological refractory period (PRP) task.
  • To compare dual-tasking abilities between MS patients and healthy controls.
  • To determine if observed deficits are related to executive control functions or motor speed.

Main Methods:

  • A psychological refractory period (PRP) task was administered to 21 MS patients and healthy controls.
  • Standard neuropsychological tests were conducted alongside the PRP task.
  • Dual-task performance was analyzed under varying difficulty levels.

Main Results:

  • MS patients made more errors during difficult dual-task conditions compared to controls.
  • Performance did not differ between groups in easier dual-task conditions.
  • Response times were unaffected by task difficulty, indicating deficits in executive control and response selection, not motor speed.

Conclusions:

  • Cognitive control and dual-tasking deficits are present in MS patients.
  • These deficits are not attributable to simple motor speed impairments.
  • The developed dual-tasking test is suitable for various MS patients and can enhance clinical and research assessments.