Cookies on this website

We use cookies to ensure that we give you the best experience on our website. If you click 'Accept all cookies' we'll assume that you are happy to receive all cookies and you won't see this message again. If you click 'Reject all non-essential cookies' only necessary cookies providing core functionality such as security, network management, and accessibility will be enabled. Click 'Find out more' for information on how to change your cookie settings.

Bilateral perisylvian polymicrogyria (BPP) is a malformation of cortical development, frequently associated with severe dysarthria or anarthria. BPP patients are therefore often labeled as severely retarded, but a detailed neuropsychological profile has not been reported to date. In a series of 14 patients, we demonstrated that only a minority had extremely low intelligence, and that some aspects of cognitive function correlated with the extent of the cortical disorganization. Early age at seizure onset correlated positively with Performance IQ scores (P<0.05) and negatively with the extent of the lesion (P<0.01), reflecting that patients with more severe BPP are more likely to have early seizure onset, resulting in greater interference with ongoing cognitive development. Receptive and expressive language skills were found to be equally poor. Frontal lobe function and memory abilities were relatively well preserved, suggesting that the observed cognitive profiles were related, at least in part, to specific areas of cortical dysfunction and not only to global dysfunction.

Original publication

DOI

10.1016/j.yebeh.2005.01.012

Type

Journal article

Journal

Epilepsy Behav

Publication Date

05/2005

Volume

6

Pages

393 - 404

Keywords

Adult, Brain Mapping, Cerebral Cortex, Cognition, Electroencephalography, Female, Functional Laterality, Humans, Image Processing, Computer-Assisted, Intelligence, Magnetic Resonance Imaging, Male, Memory, Middle Aged, Neurologic Examination, Neuropsychological Tests, Problem Solving, Seizures, Verbal Behavior