Profound memory loss is a rare but serious complication of temporal-lobe surgery for the relief of medically intractable epilepsy. This paper examines the characteristics of the patients who have been reported to become amnesic following temporal-lobe surgery over the last four decades. The critical role of the hippocampi in memory function are implicated in autopsy studies and MRI investigations, but these cases suggest that a range of memory impairments result from bilateral hippocampal damage, rather than a pure amnesic syndrome in every case. There is some evidence that bilateral structural hippocampal abnormalities may not necessarily be associated with significant memory problems, if these abnormalities have a developmental basis. However, whilst not necessarily profound. any post-operative deterioration in memory function remains a significant consideration in the presurgical evaluation of temporal-lobe epilepsy patients.
Baxendale, S. (1998). Amnesia in temporal lobectomy patients: Historical perspective and review. Seizure, 7(1), 15–24. https://doi.org/10.1016/S1059-1311(98)90003-6