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Related Experiment Videos

Mismatch negativity contribution in multiple sclerosis patients.

Marco Aurélio Rocha Santos1, Mário Sérgio Lei Munhoz, Marco Aurélio L Peixoto

  • 1Programa de Pós-graduação em Otorrinolaringologia e Cirurgia de Cabeça em Pescoço, Escola Paulista de Medicina, Universidade Federal de São Paulo, SP.

Brazilian Journal of Otorhinolaryngology
|February 20, 2007
PubMed
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Mismatch Negativity (MMN) can indicate cognitive deficits in multiple sclerosis (MS) patients. A lack of MMN wave correlated with cognitive impairment identified by the Paced Auditory Addition Task (PASAT).

Area of Science:

  • Neuroscience
  • Auditory Neuroscience
  • Clinical Neurophysiology

Background:

  • Mismatch Negativity (MMN) serves as a functional index of the supratemporal auditory cortex.
  • Multiple Sclerosis (MS) is a neurological condition that can impact cognitive functions.

Purpose of the Study:

  • To investigate the correlation between Mismatch Negativity (MMN) and cognitive deficits in patients with Multiple Sclerosis (MS).
  • To determine if MMN, assessed via auditory stimulation protocols, can predict cognitive impairment measured by the Paced Auditory Addition Task (PASAT).

Main Methods:

  • A clinical study involving 60 participants (40 female, 20 male) divided into MS and control groups.
  • MMN was assessed using auditory stimulation protocols with varied durations and frequencies.

Related Experiment Videos

  • Cognitive function was evaluated using the Paced Auditory Addition Task (PASAT), and MMN results were correlated with PASAT scores.

    • Main Results:

    • MMN was detected in 60% of MS patients with duration variations and 45% with frequency variations.
    • No statistically significant differences in MMN latencies and amplitudes were observed between MS patients and controls.
    • A significant correlation was found between the absence of the MMN wave and cognitive impairment as identified by the PASAT.

    Conclusions:

    • Mismatch Negativity (MMN) is correlated with cognitive deficits in Multiple Sclerosis (MS) patients.
    • The Paced Auditory Addition Task (PASAT) can be used in conjunction with MMN to assess cognitive impairment in MS.