Quantification of the relationship between, magnetoencephalographic (MEG) and blood oxygenation dependent (BOLD) images of brain function

Barnes, Gareth R., Singh, Krish D., Fawcett, Ian, Hadjipapas, Avgis and Hillebrand, Arjan (2003). Quantification of the relationship between, magnetoencephalographic (MEG) and blood oxygenation dependent (BOLD) images of brain function. IN: 2003 IEEE Workshop on Statistical Signal Processing. New York, NY (US): IEEE.

Abstract

Magnetoencephalography (MEG) is the measurement of the magnetic fields generated outside the head by the brain’s electrical activity. The technique offers the promise of high temporal and spatial resolution. There is however an ambiguity in the inversion process of estimating what goes on inside the head from what is measured outside. Other techniques, such as functional Magnetic Resonance Imaging (fMRI) have no such inversion problems yet suffer from poorer temporal resolution. In this study we examined metrics of mutual information and linear correlation between volumetric images from the two modalities. Measures of mutual information reveal a significant, non-linear, relationship between MEG and fMRI datasets across a number of frequency bands.

Publication DOI: https://doi.org/10.1109/SSP.2003.1289401
Divisions: Life & Health Sciences > Psychology
Life & Health Sciences > Optometry
Additional Information: 2003 IEEE Workshop on Statistical Signal Processing, 28 September - 1 October 2003, St Louis, Missouri (US).
Event Title: IEEE Workshop on Statistical Signal Processing, SSP 2003
Event Type: Other
Event Dates: 2003-09-28 - 2003-10-01
Uncontrolled Keywords: magnetoencephalography,MEG,magnetic fields,brain,electrical activity,temporal resolution,spatial resolution,outside,magnetic resonance imaging,fMRI,frequency bands,Electrical and Electronic Engineering,Applied Mathematics,Signal Processing,Computer Science Applications
Full Text Link: http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=1289401
Related URLs: http://www.scopus.com/inward/record.url?scp=84948651946&partnerID=8YFLogxK (Scopus URL)
Published Date: 2003-09
Authors: Barnes, Gareth R.
Singh, Krish D.
Fawcett, Ian
Hadjipapas, Avgis
Hillebrand, Arjan

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