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Abstract
To identify the real-time effects of interictal rolandic spikes (or centrotemporal spikes [CTS]) on language, behavior, and cognitive function in patients with rolandic epilepsy (RE). We studied 22 medication-naive patients with RE using EEG-fMRI with a 3T MRI scanner. We used simultaneous EEG to define the pre-CTS, CTS, and post-CTS periods. We analyzed the dynamic functional connectivity maps of the rolandic network during the 3 interictal CTS periods. The analysis of dynamic changes revealed positive correlations between the bilateral rolandic areas and the left inferior frontal gyrus (IFG; Broca area), the left inferior parietal lobe and the supramarginal gyrus (areas responsible for receptive language function), and the right IFG and left caudate. Anti-correlations were found in the default mode network (bilateral superior frontal gyrus, left middle frontal gyrus, left middle temporal gyrus, and right precuneus). Interictal CTS directly disrupts the functional brain networks responsible for language, behavior, and cognition in children with typical RE. It is important to suppress discharges to reduce the risk of neuropsychological impairments in children with RE.
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