CA2494167A1 - Sensors for use in magnetoencephalometers and a super-multichannel magnetoencephalography system using these sensors - Google Patents

Sensors for use in magnetoencephalometers and a super-multichannel magnetoencephalography system using these sensors Download PDF

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Publication number
CA2494167A1
CA2494167A1 CA002494167A CA2494167A CA2494167A1 CA 2494167 A1 CA2494167 A1 CA 2494167A1 CA 002494167 A CA002494167 A CA 002494167A CA 2494167 A CA2494167 A CA 2494167A CA 2494167 A1 CA2494167 A1 CA 2494167A1
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Canada
Prior art keywords
sensor
sensors
coils
super
sensor coils
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Granted
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CA002494167A
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French (fr)
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CA2494167C (en
Inventor
Tunehiro Takeda
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Japan Science and Technology Agency
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Individual
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Publication of CA2494167C publication Critical patent/CA2494167C/en
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Expired - Fee Related legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
    • A61B5/242—Detecting biomagnetic fields, e.g. magnetic fields produced by bioelectric currents
    • A61B5/245—Detecting biomagnetic fields, e.g. magnetic fields produced by bioelectric currents specially adapted for magnetoencephalographic [MEG] signals

Abstract

This invention relates to a super-multichannel MEG system comprising sensors produced by printing sensor coils on thin films in positions shifted from each other and by laminating multiple thin-film sensor coils together. Intended for use in a multichannel MEG system comprising a dewar, the sensors are arrayed in the dewar to detect biomagnetism and the squids to detect signals coming from the sensors. These sensors are characterized by the sensor coils being printed on thin films in positions shifted from each other laterally and longitudinally and by their being laminated in the required number.

Claims (4)

1. A sensor for use in a magnetoencephalometer, characterized by said sensor being produced by printing sensor coils on thin films in positions shifted from each other laterally and longitudinally and by laminating the required number of said sensor coils.
2. The sensor for use in the magnetoencephalometer, according to Claim 1, wherein said sensor is characterized by said sensor coils being shifted in positions precisely by a length of [aln] in the lateral and longitudinal directions and being laminated together in the number of n2 where [a] is the length of a side of the thin-film coil, and [n] is a natural number.
3. A sensor for use in the magnetoencephalometer, characterized by said sensor comprising said laminated sensor coils being arrayed longitudinally and end-to-end, while aligning them accurately, to make it possible to detect the difference in electric currents generated by the corresponding coils and to measure the primary derivative or the high-order derivative in the axial direction of the magnetic field.
4. A super-multichannel magnetoencephalography system, characterized by said system comprising the sensors of Claim 1, 2, or 3, high-speed switching means corresponding to each coil in the sensor, and squids arrayed to correspond with the high-speed switching means.
CA2494167A 2003-06-11 2003-06-11 Sensors for use in magnetoencephalometers and a super-multichannel magnetoencephalography system using these sensors Expired - Fee Related CA2494167C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2003/007419 WO2004110269A1 (en) 2003-06-11 2003-06-11 Sensor for magnetoencephalography meter and supermultichannel magnetoencephalography meter system using the same

Publications (2)

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CA2494167A1 true CA2494167A1 (en) 2005-02-02
CA2494167C CA2494167C (en) 2011-04-26

Family

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Family Applications (1)

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CA2494167A Expired - Fee Related CA2494167C (en) 2003-06-11 2003-06-11 Sensors for use in magnetoencephalometers and a super-multichannel magnetoencephalography system using these sensors

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US (1) US7672707B2 (en)
EP (1) EP1632176B1 (en)
CA (1) CA2494167C (en)
WO (1) WO2004110269A1 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9026194B2 (en) 2011-03-03 2015-05-05 Moment Technologies, Llc Current diverter for magnetic stimulation of biological systems
US8483795B2 (en) 2011-03-03 2013-07-09 Moment Technologies, Llc Primary source mirror for biomagnetometry
US8527029B2 (en) 2011-08-09 2013-09-03 Moment Technologies, Llc Modular arrays of primary source mirrors for biomagnetometry
US8907668B2 (en) 2011-10-14 2014-12-09 Moment Technologies, Llc High-resolution scanning prism magnetometry
US11723579B2 (en) 2017-09-19 2023-08-15 Neuroenhancement Lab, LLC Method and apparatus for neuroenhancement
US11717686B2 (en) 2017-12-04 2023-08-08 Neuroenhancement Lab, LLC Method and apparatus for neuroenhancement to facilitate learning and performance
US11478603B2 (en) 2017-12-31 2022-10-25 Neuroenhancement Lab, LLC Method and apparatus for neuroenhancement to enhance emotional response
US11364361B2 (en) 2018-04-20 2022-06-21 Neuroenhancement Lab, LLC System and method for inducing sleep by transplanting mental states
CN113382683A (en) 2018-09-14 2021-09-10 纽罗因恒思蒙特实验有限责任公司 System and method for improving sleep
US11786694B2 (en) 2019-05-24 2023-10-17 NeuroLight, Inc. Device, method, and app for facilitating sleep

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3769201D1 (en) * 1986-05-21 1991-05-16 Siemens Ag SQUID MAGNETOMETER FOR A DEVICE FOR MEASURING LOW MAGNETIC FIELDS.
US4913152A (en) * 1988-04-28 1990-04-03 The Johns Hopkins University Magnetoencephalograph (MEG) using a multi-axis magnetic gradiometer for localization and tracking of neuromagnetic signals
EP0363658B1 (en) * 1988-09-22 1993-08-04 Siemens Aktiengesellschaft Superconducting gradiometer loop system for a multichannel measuring device
US5122744A (en) * 1990-10-09 1992-06-16 Ibm Corporation Gradiometer having a magnetometer which cancels background magnetic field from other magnetometers
FI89130C (en) * 1990-11-01 1993-08-25 Neuromag Oy LOCALIZATION SPEAKERS FOR ORDERING FOR DESTINATION VID INTERVALS FOR USING MAGNETOENKEPHALOGRAPHIC MAETNING
JPH078467A (en) * 1992-02-06 1995-01-13 Biomagnetic Technol Inc Biomagnetometer and method for collecting magnetic data
JPH0817251B2 (en) * 1993-01-07 1996-02-21 株式会社超伝導センサ研究所 SQUID magnetometer
JP3139372B2 (en) * 1995-07-10 2001-02-26 住友電気工業株式会社 Magnetic sensor
JP3407520B2 (en) * 1995-12-14 2003-05-19 株式会社島津製作所 Biomagnetic measurement device
ATE209465T1 (en) * 1998-01-23 2001-12-15 Ctf Systems Inc METHOD FOR MEASUREMENT, DETERMINATION AND DISPLAY OF RMS VALUES OF CURRENT DENSITY DISTRIBUTION
JP2002243817A (en) * 2001-02-21 2002-08-28 Hitachi Ltd Detection coil-integrated gradiometer and magnetic field measuring instrument
JP3757815B2 (en) * 2001-04-27 2006-03-22 株式会社日立製作所 Biomagnetic field measurement device
US20030141868A1 (en) * 2001-08-23 2003-07-31 Bakharev Alexander A. High balance gradiometer
JP3566258B2 (en) * 2002-02-13 2004-09-15 独立行政法人 科学技術振興機構 Magnetoencephalography sensor and super multi-channel magnetoencephalography system using it
US7130675B2 (en) * 2002-06-28 2006-10-31 Tristan Technologies, Inc. High-resolution magnetoencephalography system and method

Also Published As

Publication number Publication date
CA2494167C (en) 2011-04-26
EP1632176B1 (en) 2010-07-21
US20050234328A1 (en) 2005-10-20
EP1632176A4 (en) 2008-11-05
EP1632176A1 (en) 2006-03-08
WO2004110269A1 (en) 2004-12-23
US7672707B2 (en) 2010-03-02

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Effective date: 20160613