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동의어 포함
We have developed a whole-head MEG system for basic brain research and clinical application. The sensor system
consists of a 152 SQUID gradiometer array oriented and located in a suitable way to cover a whole head of the human. The
system measures magnetic fields generated by neuronal currents in the brain to get information on the brain activities. For
this purpose, the field sensitivity determined by the position, orientation and geometry of the pickup coil as well as
amplification factor of the electronic circuits should be known precisely. However, the position and orientation of the pickup
coil might be changed from the designed specifications during cool down of the dewar and it is necessary to characterize the
field sensitivity. In this study, we made calibration systems to determine the actual position and orientation of the 152 pickup
coils and compared the localization results of the N100m source in the auditory cortex.*표시는 필수 입력사항입니다.
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