Visual naming performance after ATL resection: Impact of atypical language dominance |
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Authors: | S Kovac G Möddel J Reinholz T Syed SU Schuele T Lineweaver T Loddenkemper |
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Institution: | a Neurological Institute, Cleveland Clinic, 9500 Euclid Avenue, Cleveland, OH, USA b Department of Neurology, University of Muenster, Muenster, Germany c Epilepsy Center, University Hospitals, Case Western Reserve University, Cleveland, OH, USA d Department of Neurology, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA e Butler University, 4600 Sunset Avenue, Indianapolis, IN, USA f Children's Hospital Boston, Harvard Medical School, 300 Longwood Ave, Boston, MA, USA |
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Abstract: | PurposeTo characterize the interaction between language dominance and lateralization of the epileptic focus for pre- and postoperative Boston Naming Test (BNT) performance in patients undergoing anterior temporal lobectomy (ATL).MethodsAnalysis of pre- and postoperative BNT scores depending on lateralization of language as measured by the intracarotid amobarbital procedure (IAP) versus lateralization of the temporal lobe epileptic focus.ResultsChanges between pre- and postoperative BNT performance depended on epilepsy lateralization (effect size = 0.189) with significant decrease in patients undergoing left ATL. Subgroup analysis in these showed that postoperative decline in BNT scores was significant in patients with atypical (n = 14; p < 0.05), but did not reach statistical significance in patients with left language dominance (n = 36; p = 0.09). Chi-square test revealed a trend of higher proportions of patients experiencing significant postsurgical deterioration in naming performance in atypical (57.1%) as compared to left language dominance (30.6%; p = 0.082). Surgical failure was also associated with greater decline of BNT scores and was more common in atypical than in left language dominant patients (χ2 (1, n = 98) = 4.62, p = 0.032). Age of onset, duration of epilepsy, and seizure frequency had no impact on changes in BNT performance.ConclusionAtypical language dominance is a predictor of change in visual naming performance after left ATL and may also impact postsurgical seizure control. This should be considered when counseling surgical candidates. |
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Keywords: | Temporal lobe epilepsy Confrontation naming Language lateralization Boston Naming Test |
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