Effects of surgical treatment on intellectual performance and memory in a Spanish sample of drug-resistant partial onset-temporal lobe epilepsy patients

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Publication Details

Author list: Maestu F
Publisher: Elsevier: 12 months
Publication year: 2002
Volume number: 11
Issue number: 3
Start page: 151
End page: 156
Number of pages: 6
ISSN: 1059-1311
Languages: English-Great Britain (EN-GB)


Knowledge of the effects of surgical treatment of epilepsy on mnesic
functions has been steadily increasing in recent years. However, while
some authors claim that this function remains seriously impaired after
surgery, others argue that there is some recovery. In this study, we
compare the pre- and post-operative results (one-year follow-up) of 55
patients (30 with right-temporal localization and 25 with left)
suffering from drug-resistant partial-temporal epilepsy. Results of
pre-surgical evaluation show that 42% of the patients had memory
alterations of both verbal and visuo-spatial types, this group being
made up of those patients that had been ill for longest (mean of 20
years). The remaining patients showed more specific deficits related to a
particular type of information. Post-surgical results show that the
general IQ increase was significant, even though no significant
differences were found for general memory.

Nevertheless, patients with right-temporal localization showed
considerable improvement in verbal memory tasks (contralateral to the
area operated on), while the performance of patients with left-temporal
localization deteriorated slightly in these tasks (ipsilateral to the
area operated on). In the visual memory tests no changes occurred in any
of the groups.


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Last updated on 2019-13-08 at 00:45