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Titolo:
SIMULTANEOUS FUNCTIONAL MAGNETIC-RESONANCE-IMAGING AND ELECTROPHYSIOLOGICAL RECORDING
Autore:
HUANGHELLINGER FR; BREITER HC; MCCORMACK G; COHEN MS; KWONG KK; SUTTON JP; SAVOY RL; WEISSKOFF RM; DAVIS TL; BAKER JR; BELLIVEAU JW; ROSEN BR;
Indirizzi:
MASSACHUSETTS GEN HOSP,NMR CTR,DEPT RADIOL,BLDG 149,13TH ST BOSTON MA02129 MASSACHUSETTS GEN HOSP,NMR CTR,DEPT RADIOL BOSTON MA 02129 MASSACHUSETTS GEN HOSP,DEPT PSYCHIAT BOSTON MA 02129 MASSACHUSETTS GEN HOSP BOSTON MA 02114 NEW ENGLAND COLL OPTOMETRY BOSTON MA 00000 UNIV CALIF LOS ANGELES,SCH MED,REED NEUROL RES CTR,DEPT NEUROL LOS ANGELES CA 90024 UNIV CALIF LOS ANGELES,SCH MED,REED NEUROL RES CTR,DEPT RADIOL SCI LOS ANGELES CA 90024 ROWLAND INST SCI INC CAMBRIDGE MA 02142
Titolo Testata:
Human brain mapping
fascicolo: 1, volume: 3, anno: 1995,
pagine: 13 - 23
SICI:
1065-9471(1995)3:1<13:SFMAE>2.0.ZU;2-T
Fonte:
ISI
Lingua:
ENG
Soggetto:
CEREBRAL BLOOD-FLOW; HUMAN VISUAL-CORTEX; HUMAN-BRAIN; SENSORY STIMULATION; NEURONAL-ACTIVITY; POWER DEPOSITION; MRI; NMR; CONTRAST; SUSCEPTIBILITY;
Keywords:
ECHO PLANAR MRI; BRAIN; FUNCTION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
57
Recensione:
Indirizzi per estratti:
Citazione:
F.R. Huanghellinger et al., "SIMULTANEOUS FUNCTIONAL MAGNETIC-RESONANCE-IMAGING AND ELECTROPHYSIOLOGICAL RECORDING", Human brain mapping, 3(1), 1995, pp. 13-23

Abstract

The purpose of this study was to develop a method for obtaining simultaneous electrophysiological and functional magnetic resonance imagingdata. Using phantom experiments and tests on several of the investigators, a method for obtaining simultaneous electrophysiological and fMRI data was developed and then tested in three volunteers including twotask activation experiments. It was then applied in a sleep experiment (n = 12). Current limiting resistance and low-pass filtering were added to the electrophysiological circuit. Potential high frequency current loops were avoided in the electrical layout near the subject. MRI was performed at 1.5 T using conventional and echo planar imaging sequences. There was no evidence of subject injury. Expected correlations were observed between the electrophysiological and fMRI data in the task activation experiments. The fMRI data were not significantly degraded by the electrophysiological apparatus. Alpha waves were detected from within the magnet in seven of the 15 experimental sessions. There was degradation of the electrophysiological data due to ballistocardiographic artifacts (pulsatile whole body motion time-locked to cardiac activity) which varied between subjects from being minimal to becoming large enough to make detection of alpha waves difficult. We concluded that simultaneous fMRI and electrophysiological recording is possible with minor modifications of standard electrophysiological equipment. Our initial results suggest this can be done safely and without compromise of the fMRI data. The usefulness of this technique for studies of such things as sleep and epilepsy is promising. Applications requiringhigher precision electrophysiological data, such as evoked response measurements, may require modifications based on ballistocardiographic effects. (C) 1995 Wiley-Liss, Inc.

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Documento generato il 30/09/20 alle ore 09:28:19