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The relationship between memory performance, perceived cognitive function, and mood in patients with epilepsy.

A Elixhauser1, N K Leidy, K Meador

  • 1Agency for Health Care Policy and Research, Rockville, MD 20852, USA. aelixhau@ahcpr.gov

Epilepsy Research
|October 9, 1999
PubMed
Summary

Memory performance and perceived cognitive function in epilepsy patients are weakly linked. Mood significantly impacts perceived cognition, highlighting the need to assess memory, self-perception, and mood separately for comprehensive patient understanding.

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Area of Science:

  • Neuroscience
  • Clinical Psychology

Background:

  • Subjective memory and objective performance often show low correlations.
  • Discrepancies may arise from differences between neuropsychological tests and daily life cognitive experiences.
  • Understanding these relationships is crucial for patients with epilepsy.

Purpose of the Study:

  • To evaluate the relationship between everyday memory performance, perceived cognitive functioning, and mood in epilepsy patients.
  • To investigate how objective memory tests, self-reported cognition, and mood interact.

Main Methods:

  • 138 epilepsy patients were recruited from three US epilepsy centers.
  • Everyday memory was assessed using the Rivermead Behavioural Memory Test (RBMT).
  • Perceived cognitive function (Quality of Life in Epilepsy Inventory, QOLIE-89) and mood (Profile of Mood States, POMS) were measured via questionnaires.

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Main Results:

  • Memory performance showed a weak correlation with perceived cognitive functioning (r=0.22, P<0.01).
  • Perceived cognitive functioning was strongly correlated with mood (r=-0.75, P<0.0001).
  • Mood (POMS) was a stronger independent predictor of perceived cognitive functioning than memory performance (RBMT).

Conclusions:

  • Objective memory tests and subjective self-reports capture distinct aspects of cognitive experience.
  • Assessing memory performance, perceived cognitive function, and mood separately is vital for a comprehensive understanding of epilepsy patients' cognitive status.
  • These constructs are related but not redundant, necessitating multi-faceted evaluation.