| Summary: | The purpose of this study was to investigate the neuropsychological outcomes of pediatric subjects undergoing temporal lobe surgery, and then compare the outcomes between subjects in the iMRI and the standard operating suites. This study involved 77 children ages one to 21 years (M = 11.98) at time of surgery for intractable epilepsy. Forty-seven returned for repeat neuropsychological assessment. At baseline, subjects with early onset of epilepsy (≤ 7 years) scored worse on a measure of attention (p = .02), FSIQ (p < .01), perceptual reasoning (p < .01), and processing speed (p = .06). At one-year follow-up, interactions were observed for the response style domain of the attention measure (p = .03), FSIQ (p = .06) and working memory (p = .08). Follow-up at one year, for the group as a whole, revealed decline in verbal memory (p = .04) and reading comprehension (p = .02); and improvement for word reading (p = .05). No significant differences were observed between the iMRI and standard operating suite. Though, hemisphere, duration of epilepsy, preoperative seizure frequency, lesional disease, seizure type, presence of epileptogenic focus, and number of lobes involved accounted for variance in neuropsychological outcomes. These results provide further support for that certain preoperative individual, disease, and therapeutic variables are predictive of neurocognitive outcome following surgery for temporal lobe epilepsy. Additionally, the results demonstrated that surgery may also impact attention.
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