Neuropsychologische Schätzdefizite bei rechtsfrontaler und rechtstemporaler Epilepsie.

Background: Previous studies revealed a right-hemispheric dominance for cognitive estimation processes. Objectives: This study explored estimation impairments in patients with focal temporal and frontal lobe epilepsies. Methods: 109 patients (right frontal, left frontal, right temporal-mesial, right temporal-neocortical, left temporal-mesial, left temporal-neocortical) and a control group with 67 subjects were included. All subjects underwent an extensive neuropsychological assessment including the Test zum kognitiven Schätzen (TKS; Brand et al., 2002). Hypothesis: It was expected that right-hemispheric lesions would be associated with impairments in cognitive estimation. Results: Patients with right-frontal and right-temporal mesial focus showed significant estimation deficits compared to the other groups. Conclusion: This study shows that the right hemisphere dominantly participates in cognitive estimation. [ABSTRACT FROM AUTHOR]