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Abstract

Grant Number:	5R44NS039264-03
PI Name:	ERIKSEN, K JEFFREY.
PI Email:	jeriksen@egi.com
PI Title:	SCIENTIST
Project Title:	Integrated EEG/fMRI Acquisition and Analysis System

Abstract: DESCRIPTION (provided by applicant): Functional MRI is capable of achieving millimeter spatial resolution in measurements of blood oxygenation associated with neural tissue activation in the brain, while the EEG is capable of achieving sub-millisecond temporal resolution of the electrical activity. Many studies can now benefit from the synergy of these two techniques, but simultaneous recording is difficult at present. To fill this gap, we propose to design a prototype and test an integrated system that will make it easy to record EEG in an MRI scanner during fMRI acquisition. For studies not requiring simultaneous recording the system will be designed to carry out EEG studies as if they were done in the magnet for better comparison. In Phase I a 32-channel system was built and tested with a physical phantom to demonstrate feasibility. In Phase II a complete 256-channel system will be built to include integrated head stabilization, specialized head-coils, rapid and painless application of 256 EEG electrodes. ERP/fMRI experimental design and control software, joint EEG/fMRI segmentation and analysis software, and combined EEG/fMRI source modeling software. The Phase II system will be tested with a dual EEG/fMRI phantom as well as in human subjects with a visual perceptual experiment.

Thesaurus Terms:
biomedical equipment development, brain imaging /visualization /scanning, electroencephalography, functional magnetic resonance imaging
electrode, electronic recording system, evoked potential, image enhancement, phantom model
bioimaging /biomedical imaging, clinical research, human subject

Institution:	ELECTRICAL GEODESICS, INC.
	1850 MILLRACE DR, STE 3
	EUGENE, OR 97403
Fiscal Year:	2003
Department:
Project Start:	01-JUN-1999
Project End:	31-AUG-2004
ICD:	NATIONAL INSTITUTE OF NEUROLOGICAL DISORDERS AND STROKE
IRG:	ZRG1

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