Neuroscience 2001 Abstract
| Presentation Number: | 416.13 |
|---|---|
| Abstract Title: | DEVELOPMENT OF INTERLEAVED RECORDING OF FUNCTIONAL MRI AND ELECTROENCEPHALOGRAM : A STUDY OF NEURAL CORRELATES OF P300 DURING A VISUAL ODDBALL TASK. |
| Authors: |
Anami, K.*1
; Saitoh, O.1
; Yumoto, M.2
; Tanaka, F.3
; Mori, T.1
; Ohnishi, T.3
; Matsuda, H.3
1Psychiatry, National Center Hospital for Mental, Nervous, and Muscular Disorders, NCNP, Tokyo, Japan 2Clinical Laboratory, Tokyo University Hospital, Tokyo, Japan 3Radiology, National Center Hospital for Mental, Nervous, and Muscular Disorders, NCNP, Tokyo, Japan |
| Primary Theme and Topics |
Cognition and Behavior - Human Cognition and Behavior -- Attention |
| Session: |
416. Human cognition and behavior: attention II Poster |
| Presentation Time: | Monday, November 12, 2001 1:00 PM-2:00 PM |
| Location: | Exhibit Hall TT-30 |
| Keywords: | FMRI, ERP, EEG, ATTENTION |
Technique for interleaved recording of electroencephalogram(EEG) and functional magnetic resonance imaging(fMRI) was developed and used to investigate neurocognitive processes in a visual oddball task. One of the most serious artifacts during interleaved recording is ballistocardiogram. Sources of this artifact are related to the micro-movements of EEG cables on the head of the subject that oscillate in synchronization with heart pulsations. The conventional method to avoid the artifact, such as twisting EEG cables with bipolar montage gives rise to the reduction of the EEG signal and unequable reference. It was considered that preventing the head micro-movements was, therefore, a shortcut to realize multi-channel recording with monopolar montage, and so a vacuum head supporting system usually used for radiological oncology was employed. The quality of EEG during fMRI was validated by inspection, FFT ,and visual evoked potentials. Using interleaved EEG/fMRI, P300s of healthy subjects were recorded during a visual oddball task. There were 2 sessions categorized by target probability:15% and 30%. The preliminary results were that 1) P300 was successfully recorded, 2) fMRI activations were localized on frontal and parietal lobe, 3) the amplitude of P300 with 15% session was higher than that with 30%, 4) the areas of fMRI activation with 15% session were more extensive in frontal and parietal lobes than those with 30%.
Sample Citation:
[Authors]. [Abstract Title]. Program No. XXX.XX. 2001 Neuroscience Meeting Planner. San Diego, CA: Society for Neuroscience, 2001. Online.
Copyright © 2001-2026 Society for Neuroscience; all rights reserved. Permission to republish any abstract or part of any abstract in any form must be obtained in writing by SfN office prior to publication.
