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    Accelerated long-term forgetting after amygdalohippocampectomy in temporal lobe epilepsy
    (Elsevier, 2020) Polat, Burcu; Helvacı Yılmaz, Nesrin; Mantar, Nagihan; Çadırcı, Fadime; Sitrava, Sevilay; Ozmansur, Elif Nurdan; Uzan, Mustafa; Özkara, Çiğdem; Hano?lu, Lütfü
    Aim of the study: Temporal lobe epilepsy (TLE) has been associated with the phenomenon of accelerated long-term forgetting (ALF). In this study, we aimed to demonstrate the effect of surgery on the ALF phenomena thus contributing to potential explanation of the causal mechanism.Materials and methods: We evaluated 51 patients with TLE related to hippocampal sclerosis who had amygdalohippocampectomy and had remained seizure-free after surgery. A control group consisted of 24 healthy individuals. All were given a verbal learning test assessing recall after 30 min, 1 week and 6 weeks.Results: In our study, the Left-TLE (L-TLE) group showed a statistically significant reduction in the performance at all assessment intervals from 30 min to 1 week compared to the Right-TLE and control groups regarding verbal learning memory test (VLMT) as well as for logical memory. The forgetting rates in the VLMT from 30 min to 1 week were not statistically significantly different between all 3 groups. The logical memory test results equally showed no statistically significant difference in the forgetting rates for the 3 groups between 30 min and 1 week.Conclusions and clinical implications: These results may support ongoing debates assuming the initial low performance in the memory of L-TLE patients to be directly related with left hippocampal-temporal tissue loss irrespective of epileptic activity. The discovery of the ALF phenomenon explains that standard memory tests are unable to detect memory loss in some patients who are experiencing a significant level of problems with forgetfulness in their daily lives.