WO2009087486A3 - Biosensor noise reduction - Google Patents

Biosensor noise reduction Download PDF

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Publication number
WO2009087486A3
WO2009087486A3 PCT/IB2008/003960 IB2008003960W WO2009087486A3 WO 2009087486 A3 WO2009087486 A3 WO 2009087486A3 IB 2008003960 W IB2008003960 W IB 2008003960W WO 2009087486 A3 WO2009087486 A3 WO 2009087486A3
Authority
WO
WIPO (PCT)
Prior art keywords
biosensor
noise reduction
signal
user
electrode
Prior art date
Application number
PCT/IB2008/003960
Other languages
French (fr)
Other versions
WO2009087486A2 (en
Inventor
Emir Delic
Original Assignee
Emotiv Systems Pty Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Emotiv Systems Pty Ltd filed Critical Emotiv Systems Pty Ltd
Publication of WO2009087486A2 publication Critical patent/WO2009087486A2/en
Publication of WO2009087486A3 publication Critical patent/WO2009087486A3/en

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/16—Devices for psychotechnics; Testing reaction times ; Devices for evaluating the psychological state
    • A61B5/165—Evaluating the state of mind, e.g. depression, anxiety
    • 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
    • A61B5/316—Modalities, i.e. specific diagnostic methods
    • A61B5/369—Electroencephalography [EEG]
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
    • A61B5/6801—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
    • A61B5/6813—Specially adapted to be attached to a specific body part
    • A61B5/6814—Head
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/011—Arrangements for interaction with the human body, e.g. for user immersion in virtual reality
    • G06F3/015—Input arrangements based on nervous system activity detection, e.g. brain waves [EEG] detection, electromyograms [EMG] detection, electrodermal response detection
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B2560/00—Constructional details of operational features of apparatus; Accessories for medical measuring apparatus
    • A61B2560/02—Operational features
    • A61B2560/0223—Operational features of calibration, e.g. protocols for calibrating sensors
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B2560/00—Constructional details of operational features of apparatus; Accessories for medical measuring apparatus
    • A61B2560/02—Operational features
    • A61B2560/0242—Operational features adapted to measure environmental factors, e.g. temperature, pollution
    • 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
    • A61B5/25—Bioelectric electrodes therefor
    • A61B5/279—Bioelectric electrodes therefor specially adapted for particular uses
    • A61B5/291—Bioelectric electrodes therefor specially adapted for particular uses for electroencephalography [EEG]
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/72—Signal processing specially adapted for physiological signals or for diagnostic purposes
    • A61B5/7203—Signal processing specially adapted for physiological signals or for diagnostic purposes for noise prevention, reduction or removal
    • A61B5/7207—Signal processing specially adapted for physiological signals or for diagnostic purposes for noise prevention, reduction or removal of noise induced by motion artifacts
    • A61B5/721—Signal processing specially adapted for physiological signals or for diagnostic purposes for noise prevention, reduction or removal of noise induced by motion artifacts using a separate sensor to detect motion or using motion information derived from signals other than the physiological signal to be measured

Landscapes

  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biomedical Technology (AREA)
  • Physics & Mathematics (AREA)
  • General Health & Medical Sciences (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Molecular Biology (AREA)
  • Medical Informatics (AREA)
  • Psychiatry (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Pathology (AREA)
  • Biophysics (AREA)
  • General Engineering & Computer Science (AREA)
  • Psychology (AREA)
  • Theoretical Computer Science (AREA)
  • Educational Technology (AREA)
  • Hospice & Palliative Care (AREA)
  • Developmental Disabilities (AREA)
  • Child & Adolescent Psychology (AREA)
  • Social Psychology (AREA)
  • General Physics & Mathematics (AREA)
  • Human Computer Interaction (AREA)
  • Neurosurgery (AREA)
  • Neurology (AREA)
  • Dermatology (AREA)
  • Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)

Abstract

A method of measuring electroencephalograph (EEG) signals of a user includes generating a first signal from a first electrode in contact with the user's scalp, generating a second signal from a second electrode in proximity to the user's head, the second electrode not contacting the user's skin, and subtracting at least a portion of the second signal from the first signal.
PCT/IB2008/003960 2007-12-31 2008-12-30 Biosensor noise reduction WO2009087486A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US1818207P 2007-12-31 2007-12-31
US61/018.182 2007-12-31

Publications (2)

Publication Number Publication Date
WO2009087486A2 WO2009087486A2 (en) 2009-07-16
WO2009087486A3 true WO2009087486A3 (en) 2009-10-22

Family

ID=40853513

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2008/003960 WO2009087486A2 (en) 2007-12-31 2008-12-30 Biosensor noise reduction

Country Status (1)

Country Link
WO (1) WO2009087486A2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104822105A (en) * 2015-04-28 2015-08-05 成都腾悦科技有限公司 Brain wave induction headset-based computer real time interactive system
CN104850224A (en) * 2015-04-28 2015-08-19 成都腾悦科技有限公司 Computer real-time interaction system based on portable brain wave wired handset

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006122398A1 (en) 2005-05-16 2006-11-23 Cerebral Diagnostics Canada Incorporated Near-real time three-dimensional localization, display , recording , and analysis of electrical activity in the cerebral cortex
DE102012107838A1 (en) * 2012-08-24 2014-02-27 Albert-Ludwigs-Universität Freiburg Sensor device for detecting bioelectric signals
US9031631B2 (en) 2013-01-31 2015-05-12 The Hong Kong Polytechnic University Brain biofeedback device with radially adjustable electrodes
EP3027110A4 (en) * 2013-07-30 2017-06-28 Emotiv Lifesciences, Inc. Wearable system for detecting and measuring biosignals
US10108264B2 (en) 2015-03-02 2018-10-23 Emotiv, Inc. System and method for embedded cognitive state metric system
EP3187110A1 (en) 2015-12-30 2017-07-05 squipe GmbH Apparatus for detecting and providing brain signals by use of electroencephalography
CN106236080B (en) * 2016-08-19 2019-03-08 合肥工业大学 The removing method of myoelectricity noise in EEG signals based on multichannel
IT201700074576A1 (en) * 2017-07-04 2019-01-04 Luca Rastrelli Kit consisting of a headphone two bracelets and a driver
GB2582911B (en) * 2019-04-02 2022-08-17 Emteq Ltd Method and apparatus for measuring biological electrical activity

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020188216A1 (en) * 2001-05-03 2002-12-12 Kayyali Hani Akram Head mounted medical device
US20050234329A1 (en) * 2004-04-15 2005-10-20 Kraus Robert H Jr Noise cancellation in magnetoencephalography and electroencephalography with isolated reference sensors
US20050277826A1 (en) * 2004-06-10 2005-12-15 Conopco, Inc. Apparatus and method for reducing interference
US20070106170A1 (en) * 2005-11-10 2007-05-10 Conopco, Inc., D/B/A Unilever Apparatus and method for acquiring a signal

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020188216A1 (en) * 2001-05-03 2002-12-12 Kayyali Hani Akram Head mounted medical device
US20050234329A1 (en) * 2004-04-15 2005-10-20 Kraus Robert H Jr Noise cancellation in magnetoencephalography and electroencephalography with isolated reference sensors
US20050277826A1 (en) * 2004-06-10 2005-12-15 Conopco, Inc. Apparatus and method for reducing interference
US20070106170A1 (en) * 2005-11-10 2007-05-10 Conopco, Inc., D/B/A Unilever Apparatus and method for acquiring a signal

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104822105A (en) * 2015-04-28 2015-08-05 成都腾悦科技有限公司 Brain wave induction headset-based computer real time interactive system
CN104850224A (en) * 2015-04-28 2015-08-19 成都腾悦科技有限公司 Computer real-time interaction system based on portable brain wave wired handset

Also Published As

Publication number Publication date
WO2009087486A2 (en) 2009-07-16

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