143 Channel Whole-Cortex MEG System
Whole-cortex helmet-type SQUID MEG systems have been in operation in a number of laboratories since 1992, e.g. . Recently, a whole-cortex integrated MEG/EEG system consisting of 143 MEG sensor Channels, 40 EEG Channels, 8 A/D and D/A Channels and 8 logical Channels was developed and operated in an unshielded environment and, more recently, in a shielded room. This paper presents the resulting noise Performance and several examples of unshielded recordings of spontaneous and evoked brain activity with response to DC.
KeywordsTemporal Lobe Epilepsy Noise Cancellation Interictal Spike Dynamic Range Requirement Amplitude Slow Variation
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