Magnetoencephalography with an Array of Squid Sensors.

Williamson, S. J.; Pelizzone, M.; Okada, Y.; Kaufman, L.; Crum, D. B.

Magnetoencephalography with an Array of Squid Sensors.

Active / Technical Report | Accession Number: ADA146170 |

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Abstract:

A novel installation was developed for unshielded measurements of the neuromagnetic field near the scape with a cryogenic system incorporating nine SQUID sensors in a single dewar. Five dc-SQUIDs measure the field of interest sensed by a radial array of five detection coils, while four rf-SQUIDs monitor three components of the ambient field and the axial gradient. The latter are applied to electronic cancellation of background noise. The dewar is mounted in a scanning device for rapid and accurate positioning about the head. This system provides major advantages over conventional single-sensor systems.

Author(s):

Williamson, S. J. ; Pelizzone, M. ; Okada, Y. ; Kaufman, L. ; Crum, D. B.

Author Organization(s):

NEW YORK UNIV NY NEUROMAGNETISM LAB

Descriptive Note:

Publication rept.,

Supplementary Note:

Prepared in cooperation with S.H.E. Corporation, San Diego, CA.

Pagination:

0011

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:

Approved For Public Release

RECORD

Collection: TR

Identifying Numbers

Report Number(s):

17

Contract/Grant Number(s):

N00014-76-C-0568

Subject Terms

Joint Capability Areas:

JCA_1.2.3_Educating

Communities of Interest:

Sensors

Descriptor(s):

*MAGNETIC DETECTORS, *BIOMAGNETISM, *MAGNETOENCEPHALOGRAMS, SCANNING, MEASUREMENT, MAGNETIC FIELDS, BRAIN, MONITORING, ARRAYS

Field(s)/Group(s):

Anatomy and Physiology

Keyword(s):

Neuromagnetism, Squid sensors, SQUID(Superconducting Quantum Interference Device), WUNR201209

Report Date:

1983 Jan 01