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Instrumentation for MEG and EEG 

Instrumentation for MEG and EEG
Chapter:
Instrumentation for MEG and EEG
Author(s):

Riitta Hari

, and Aina Puce

DOI:
10.1093/med/9780190497774.003.0005
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date: 06 March 2021

This chapter examines the characteristics of instrumentation needed to perform MEG and EEG recordings, and some practicalities of the recordings. It introduces MEG sensors (SQUIDs), EEG electrodes, and the internationally accepted standard electrode position systems. For EEG, the effects of different reference electrodes are compared. Important characteristics of amplifiers for EEG and MEG recordings are presented. Shielding against external artifacts, and the nature of specialized shielded rooms and their use is described. The special requirements for sensory stimulators and monitoring devices for use in the MEG/EEG environment are also examined. Finally, future developments in EEG and MEG systems are explored.

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