Graph Theoretical Analysis of BOLD Functional Connectivity during Human Sleep without EEG Monitoring.

ABSTRACT:

Background

Functional brain networks of human have been revealed to have small-world properties by both analyzing electroencephalogram (EEG) and functional magnetic resonance imaging (fMRI) time series.

Methods & results

In our study, by using graph theoretical analysis, we attempted to investigate the changes of paralimbic-limbic cortex between wake and sleep states. Ten healthy young people were recruited to our experiment. Data from 2 subjects were excluded for the reason that they had not fallen asleep during the experiment. For each subject, blood oxygen level dependency (BOLD) images were acquired to analyze brain network, and peripheral pulse signals were obtained continuously to identify if the subject was in sleep periods. Results of fMRI showed that brain networks

SUBMITTER: Lv J 

PROVIDER: S-EPMC4567068 | biostudies-literature | 2015

REPOSITORIES: biostudies-literature