Functional connectivity analysis of cortical networks in Functional Near Infrared Spectroscopy using phase synchronization

Author

Molavi, B. ; Gervain, J. ; Dumont, Guy A. ; Noubari, H.A.

Author_Institution

Dept. of Electr. & Comput. Eng., Univ. of British Columbia, Vancouver, BC, Canada

fYear

2012

fDate

Aug. 28 2012-Sept. 1 2012

Firstpage

5182

Lastpage

5185

Abstract

Functional Near Infrared Spectroscopy (fNIRS) is a non invasive functional neuroimaging method used for studying brain activity using blood oxygen level dependent (BOLD) signal. We use phase synchronization between fNIRS channels to detect functional connections between brain regions in a speech study. Data is collected from 22 neonates whose brain activity was monitored by fNIRS while being exposed to two different types of auditory stimuli. The wavelet based phase locking analysis reveals functional connections between temporal regions and most other regions in general and frontal areas in particular.

Keywords

biomedical optical imaging; blood; brain; hearing; infrared imaging; infrared spectroscopy; medical signal processing; neurophysiology; oxygen; paediatrics; synchronisation; wavelet transforms; auditory stimuli; blood oxygen level dependent signal; brain activity; cortical networks; data collection; functional connection detection; functional connectivity analysis; functional near infrared spectroscopy; neonates; noninvasive functional neuroimaging method; patient monitoring; phase synchronization; speech study; temporal regions; wavelet based phase locking analysis; Brain; Coherence; Continuous wavelet transforms; Pediatrics; Spectroscopy; Synchronization; Wavelet analysis; Auditory Cortex; Auditory Perception; Brain Mapping; Cerebrovascular Circulation; Connectome; Cortical Synchronization; Female; Humans; Infant, Newborn; Male; Oxygen; Spectroscopy, Near-Infrared;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering in Medicine and Biology Society (EMBC), 2012 Annual International Conference of the IEEE

Conference_Location

San Diego, CA

ISSN

1557-170X

Print_ISBN

978-1-4244-4119-8

Electronic_ISBN

1557-170X

Type

conf

DOI

10.1109/EMBC.2012.6347161

Filename

6347161