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Multiple Sclerosis l: Introduction01:19

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Multiple sclerosis is a chronic autoimmune disease of the central nervous system (CNS) that affects the brain, spinal cord, and optic nerves. It is an inflammatory demyelinating disorder and a leading cause of neurological disability in young adults.EpidemiologyMS commonly begins between 20 and 40 years of age and is twice as common in women. Its exact cause remains unclear, but genetic susceptibility contributes, with higher risk in first-degree relatives and identical twins. A greater...
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The Multiple Sclerosis Performance Test MSPT: An iPad-Based Disability Assessment Tool
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Decision-making impairment in patients with multiple sclerosis: a case-control study.

Mauricio F Farez1, Lucía Crivelli1, Ramón Leiguarda1

  • 1Department of Neurology, Raúl Carrea Institute for Neurological Research (FLENI), Buenos Aires, Argentina.

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Summary

Patients with multiple sclerosis (MS) exhibit impaired decision-making under risk, performing worse on tasks like the Game of Dice Task and Iowa Gambling Task. These deficits correlate with impaired visuospatial learning, processing speed, and working memory.

Keywords:
Decision-makingExecutive functionGame of Dice TaskIowa Gambling Task

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Area of Science:

  • Neuroscience
  • Cognitive Psychology
  • Clinical Neurology

Background:

  • Multiple Sclerosis (MS) is a chronic neurological disease affecting the central nervous system.
  • Cognitive impairments are common in MS, impacting daily functioning.
  • Decision-making abilities, particularly under risk, are not fully understood in MS patients.

Purpose of the Study:

  • To evaluate decision-making under explicit risk in relapsing-remitting MS patients.
  • To examine the relationship between decisions made under risk and ambiguity.
  • To assess cognitive functions associated with decision-making performance in MS.

Main Methods:

  • A study involving 27 relapsing-remitting MS patients and 27 matched healthy controls.
  • Utilized the Game of Dice Task and Iowa Gambling Task for decision-making assessment.
  • Neuropsychological assessments were conducted to evaluate cognitive functions.

Main Results:

  • MS patients demonstrated significantly poorer performance on the Game of Dice Task and lower overall Iowa Gambling Task scores.
  • MS patients struggled particularly in later blocks of the Iowa Gambling Task, indicating risk-related decision-making deficits.
  • Performance deficits correlated with visuospatial learning, processing speed, and working memory, but not executive functioning.

Conclusions:

  • Relapsing-remitting MS patients exhibit deficits in decision-making under risk.
  • These decision-making impairments may stem from underlying deficits in visuospatial learning, processing speed, and working memory.