The Memory Assessment Scales and lateralized temporal lobe epilepsy

David W. Loring, Bruce P. Hermann, Gregory P. Lee, Daniel L. Drane, Kimford J. Meador

Research output: Contribution to journalArticlepeer-review

24 Scopus citations


We report Memory Assessment Scales (MAS) performance in 101 patients with unilateral temporal lobe epilepsy (TLE; left, n = 51: right, n = 50) with left cerebral language dominance. A significant multivariate group effect was present for the major summary indices (Verbal Memory, Visual Memory, and Global Memory, p < .04). Univariate analyses revealed no significant differences for either the Global Memory or Verbal Memory summary scores, although a significant group difference was present for Visual Memory (p < .04). The Verbal Memory-Visual Memory discrepancy score was significantly different between right and left TLE groups (p < .004). Verba Memory scores were at least 14 points lower than Visual Memory scores in 34 patients (left = 20, 59%; right = 14, 41%). Visual Memory scores were at least 14 points lower than Verbal Memory performance in 20 patients (left = 5.25%; right = 15.75%). Diagnostic efficiency statistics show higher sensitivity but lower specificity in group classification for left TLE patients. These data suggest that the MAS is sensitive to material-specific memory deficits associated with a unilateral temporal lobe seizure focus. However, over one-third of the patients (19/54) with at least a 14-point Verbal Memory-Visual Memory discrepancy were classified incorrectly. The MAS, like other material-specific memory measures, should be interpreted within the context of other clinical findings. (C) 2000 John Wiley and Sons, Inc.

Original languageEnglish (US)
Pages (from-to)563-570
Number of pages8
JournalJournal of Clinical Psychology
Issue number4
StatePublished - Apr 2000


  • Assessment
  • Epilepsy
  • Memory
  • Neuropsychology
  • Temporal lobectomy

ASJC Scopus subject areas

  • Arts and Humanities (miscellaneous)
  • Clinical Psychology


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