Journal
NEUROPSYCHOLOGY
Volume 19, Issue 6, Pages 806-813Publisher
AMER PSYCHOLOGICAL ASSOC
DOI: 10.1037/0894-4105.19.6.806
Keywords
design fluency; frontal-lobe epilepsy; temporal-lobe epilepsy
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Funding
- NIMH NIH HHS [T32-MH18399, T32 MH018399] Funding Source: Medline
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Patients with frontal-lobe epilepsy (FLE) or temporal-lobe epilepsy (TLE) and matched control participants were given a design fluency test that assessed nonverbal fluency and switching ability. Patients with FLE generated fewer designs in the switching condition relative to the TLE patients and controls, whereas group differences did not emerge in the basic fluency condition,,. When the side of the seizure focus and the presence or absence of a structural lesion were considered in patients with FLE, only those with left-lesional FLE generated fewer designs than controls did in the switching condition. Furthermore. patients with left-lesional and nonlesional FLE produced a greater proportion of set-loss errors than did controls. These results indicate that patients with FLE are impaired when they Must simultaneously generate new designs and engage in cognitive switching: however. the pattern of impairment may depend on the side of the seizure focus and the presence of a Structural lesion.
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