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Related Experiment Videos

Effects of topiramate on cognitive function.

P J Thompson1, S A Baxendale, J S Duncan

  • 1Epilepsy Research Group, Institute of Neurology, University College London, and National Society for Epilepsy, Chalfont St Peter, Gerrards Cross, Bucks SL9 ORJ, UK. PamT@epilepsyrise.co.uk

Journal of Neurology, Neurosurgery, and Psychiatry
|October 14, 2000
PubMed
Summary

Topiramate negatively impacted patient cognition, particularly verbal skills, as shown by neuropsychological testing. Reversing these effects was possible by reducing or withdrawing topiramate.

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Area of Science:

  • Neuroscience
  • Pharmacology
  • Cognitive Psychology

Background:

  • Topiramate is an effective antiepileptic agent.
  • Cognitive side effects are a concern with antiepileptic drugs.

Purpose of the Study:

  • To investigate the effects of topiramate on cognitive functions.
  • To assess the impact on intellect, memory, language, and perceptual processing.

Main Methods:

  • Retrospective study comparing neuropsychological test scores.
  • 18 patients on topiramate vs. 18 controls matched for age and IQ.
  • Assessed verbal IQ, memory, fluency, and perceptual processing.

Main Results:

  • Topiramate group showed significant cognitive decline, especially in verbal IQ, fluency, and learning.

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  • Comparison group had no significant changes.
  • Withdrawal/reduction of topiramate led to improvements in verbal fluency, learning, and digit span.

    • Conclusions:

    • Topiramate has a negative impact on cognition, particularly verbal processing.
    • Subjective patient complaints align with objective test findings.
    • Further research is needed on factors like serum levels and comedication.