How to use magnetoencephalogram in a sentence? Find typical usage patterns (collocations)/phrases/context for "magnetoencephalogram" and check conjugation/comparative form for "magnetoencephalogram". Mastering all the usages of "magnetoencephalogram" from sentence examples published by news publications.
Evoked fields are part of the magnetoencephalogram. They are brain signals evoked by sensory stimulation, but usually buried by the ongoing brain activity. Repeating the stimulus multiple times and averaging the signals reduces the uncorrelated ongoing activity and reveals the evoked field. Evoked fields are the magnetoencephalographic equivalent to evoked potentials, which are part of the electroencephalogram.
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The first valid measurement was actually made in 1963, but the field of research began to expand only after a low-noise technique was developed in 1970. Today the community of biomagnetic researchers does not have a formal organization, but international conferences are held every two years, with about 600 attendees. Most conference activity centers on the MEG (magnetoencephalogram), the measurement of the magnetic field of the brain.
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He also made the first measurement of the MEG (magnetoencephalogram, the magnetic field of the brain). However, all these early biomagnetic measurements were generally too noisy, both because of the use of insensitive detectors, and incomplete magnetic shielding. To obtain clearer results, in 1969 Cohen built an elaborate shielded room at MIT, but still needed a more sensitive detector. James Zimmerman had just developedZimmerman JE, Theine P, and Harding JT. Design and operation of stable rf-biased superconducting point-contact quantum devices, etc. Journal of Applied Physics 1970; 41:1572-1580.
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Gamma band activation (25 to 100 Hz) has been shown to be present during the perception of sensory events and the process of recognition. In a 2000 study by Kneif and colleagues, subjects were presented with eight musical notes to well-known tunes, such as Yankee Doodle and Frère Jacques. Randomly, the sixth and seventh notes were omitted and an electroencephalogram, as well as a magnetoencephalogram were each employed to measure the neural results. Specifically, the presence of gamma waves, induced by the auditory task at hand, were measured from the temples of the subjects.
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