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Related Experiment Videos

Population-based case-control study of cognitive function in essential tremor.

Julián Benito-León1, Elan D Louis, Félix Bermejo-Pareja

  • 1Department of Neurology, Móstoles General Hospital, Móstoles, Madrid, Spain. jbenitol@meditex.es

Neurology
|January 13, 2006
PubMed
Summary
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Patients with essential tremor (ET) show cognitive deficits, particularly in global cognitive performance and frontal executive function, compared to controls. Forgetfulness was also more frequently reported in those with ET.

Area of Science:

  • Neurology
  • Neuropsychology
  • Geriatrics

Background:

  • Essential tremor (ET) is a common neurological disorder.
  • Previous studies suggest potential cognitive impairments in ET patients.
  • The extent and nature of these deficits require further investigation in larger, population-based samples.

Purpose of the Study:

  • To investigate cognitive function in a large cohort of patients with essential tremor.
  • To compare cognitive performance between ET patients and age-matched controls.
  • To identify specific cognitive domains affected in essential tremor.

Main Methods:

  • A population-based study in central Spain included 232 patients with ET and 696 controls (age ≥ 65).
  • Neuropsychological assessments evaluated global cognition, executive function, verbal fluency, and memory.

Related Experiment Videos

  • Participants reported subjective forgetfulness.

    • Main Results:

    • Essential tremor patients performed significantly worse on global cognitive performance tests (MMSE) and frontal executive function tests (Trail Making Test).
    • Forgetfulness was reported more frequently in patients with ET (50.4%) compared to controls (43.1%).
    • These findings were adjusted for age, gender, education, and other potential confounders.

    Conclusions:

    • Essential tremor is associated with measurable cognitive deficits, especially in executive function.
    • Cognitive impairment in ET patients is evident even in a largely untreated, population-based sample.
    • Subjective forgetfulness is marginally more prevalent in individuals with essential tremor.