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Title: Noise cancellation in magnetoencephalography and electroencephalography with isolated reference sensors

Patent ·
OSTI ID:1176328

An apparatus measures electromagnetic signals from a weak signal source. A plurality of primary sensors is placed in functional proximity to the weak signal source with an electromagnetic field isolation surface arranged adjacent the primary sensors and between the weak signal source and sources of ambient noise. A plurality of reference sensors is placed adjacent the electromagnetic field isolation surface and arranged between the electromagnetic isolation surface and sources of ambient noise.

Research Organization:
Los Alamos National Security, LLC, Los Alamos, NM (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
W-7405-ENG-36
Assignee:
Los Alamos National Security, LLC (Los Alamos, NM)
Patent Number(s):
7,729,740
Application Number:
11/096,142
OSTI ID:
1176328
Country of Publication:
United States
Language:
English

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Magnetoencephalography: Detection of the Brain's Electrical Activity with a Superconducting Magnetometer journal February 1972
Magnetocardiograms Taken Inside a Shielded room with a Superconducting Point‐Contact Magnetometer journal April 1970
Visually evoked magnetic fields of the human brain journal October 1975