Altered functional connectivity in seizure onset zones revealed by fMRI intrinsic connectivity.

ABSTRACT:

Objective

The purpose of this study was to investigate functional connectivity (FC) changes in epileptogenic networks in intractable partial epilepsy obtained from resting-state fMRI by using intrinsic connectivity contrast (ICC), a voxel-based network measure of degree that reflects the number of connections to each voxel.

Methods

We measured differences between intrahemispheric- and interhemispheric-ICC (ICCintra-inter) that could reveal localized connectivity abnormalities in epileptogenic zones while more global network changes would be eliminated when subtracting these values. The ICCintra-inter map was compared with the seizure onset zone (SOZ) based on intracranial EEG (icEEG) recordings in 29 patients with at least 1 year of postsurgical follow-up. Two independent re

SUBMITTER: Lee HW 

PROVIDER: S-EPMC4277677 | biostudies-literature | 2014 Dec

REPOSITORIES: biostudies-literature