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AU2001233857A1 - Monitoring electrical activity - Google Patents

Monitoring electrical activity

Info

Publication number
AU2001233857A1
AU2001233857A1 AU2001233857A AU3385701A AU2001233857A1 AU 2001233857 A1 AU2001233857 A1 AU 2001233857A1 AU 2001233857 A AU2001233857 A AU 2001233857A AU 3385701 A AU3385701 A AU 3385701A AU 2001233857 A1 AU2001233857 A1 AU 2001233857A1
Authority
AU
Australia
Prior art keywords
signal
electrical activity
monitoring electrical
produce
random noise
Prior art date
Legal status (The legal status 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 status listed.)
Abandoned
Application number
AU2001233857A
Inventor
Mark Griffiths
Alan Preece
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
University of Bristol
Original Assignee
University of Bristol
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 University of Bristol filed Critical University of Bristol
Publication of AU2001233857A1 publication Critical patent/AU2001233857A1/en
Abandoned legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/48—Other medical applications
    • A61B5/4821—Determining level or depth of anaesthesia
    • 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]
    • A61B5/372—Analysis of electroencephalograms
    • A61B5/374—Detecting the frequency distribution of signals, e.g. detecting delta, theta, alpha, beta or gamma waves
    • 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
    • A61B5/30—Input circuits therefor
    • A61B5/301—Input circuits therefor providing electrical separation, e.g. by using isolating transformers or optocouplers

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • Pathology (AREA)
  • Physics & Mathematics (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Veterinary Medicine (AREA)
  • Surgery (AREA)
  • Biophysics (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Anesthesiology (AREA)
  • Psychiatry (AREA)
  • Psychology (AREA)
  • Power Engineering (AREA)
  • Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
  • Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
  • Measuring Or Testing Involving Enzymes Or Micro-Organisms (AREA)

Abstract

A method and apparatus for monitoring electrical activity, such as brainwaves, in an animal comprising detecting said activity to produce a corresponding output signal, combining the output signal with a random noise signal to produce a modified signal, and analysing the modified signal using an autocorrelation technique to detect the relative power density values at a plurality of different frequencies. The random noise signal may be a random number. The autocorrelation technique may involve the Yule-Walker method.
AU2001233857A 2000-02-17 2001-02-16 Monitoring electrical activity Abandoned AU2001233857A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB0003665A GB2359367B (en) 2000-02-17 2000-02-17 Monitoring electrical activity
GB0003665 2000-02-17
PCT/GB2001/000629 WO2001060252A1 (en) 2000-02-17 2001-02-16 Monitoring electrical activity

Publications (1)

Publication Number Publication Date
AU2001233857A1 true AU2001233857A1 (en) 2001-08-27

Family

ID=9885786

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2001233857A Abandoned AU2001233857A1 (en) 2000-02-17 2001-02-16 Monitoring electrical activity

Country Status (8)

Country Link
US (1) US6748263B2 (en)
EP (1) EP1255486B1 (en)
AT (1) ATE322861T1 (en)
AU (1) AU2001233857A1 (en)
CA (1) CA2400348A1 (en)
DE (1) DE60118705T2 (en)
GB (1) GB2359367B (en)
WO (1) WO2001060252A1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009004403A2 (en) 2006-09-29 2009-01-08 The Regents Of The University Of California Burst suppression monitor for induced coma
US8444559B2 (en) * 2007-05-04 2013-05-21 Reproductive Research Technologies, Lp Skin impedance matching system and method for skin/electrode interface
BR112012024065A2 (en) * 2010-03-23 2017-08-08 Reproductive Research Tech Lp operating method for predicting true premature labor and childbirth, and operating system for predicting true premature labor and childbirth
US8386026B2 (en) * 2010-04-12 2013-02-26 Reproductive Research Technologies, L.P. System and method for acquiring and displaying abdominal EMG signals
US8821397B2 (en) 2010-09-28 2014-09-02 Masimo Corporation Depth of consciousness monitor including oximeter
US9775545B2 (en) 2010-09-28 2017-10-03 Masimo Corporation Magnetic electrical connector for patient monitors
GB201209638D0 (en) 2012-05-30 2012-07-11 Isis Innovation Perception loss detection
WO2016057553A1 (en) 2014-10-07 2016-04-14 Masimo Corporation Modular physiological sensors

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4846190A (en) 1983-08-23 1989-07-11 John Erwin R Electroencephalographic system data display
US4616659A (en) * 1985-05-06 1986-10-14 At&T Bell Laboratories Heart rate detection utilizing autoregressive analysis
US4974162A (en) * 1987-03-13 1990-11-27 University Of Maryland Advanced signal processing methodology for the detection, localization and quantification of acute myocardial ischemia
US5047930A (en) 1987-06-26 1991-09-10 Nicolet Instrument Corporation Method and system for analysis of long term physiological polygraphic recordings
US5010891A (en) * 1987-10-09 1991-04-30 Biometrak Corporation Cerebral biopotential analysis system and method
ATE95618T1 (en) * 1989-07-14 1993-10-15 Haberl Ralph EQUIPMENT FOR EVALUATION OF SELECTED SIGNAL COMPONENTS IN PHYSIOLOGICAL MEASUREMENT SIGNALS, PARTICULARLY OF DELATE POTENTIAL IN ELECTROCARDIOGRAM.
US5109863A (en) * 1989-10-26 1992-05-05 Rutgers, The State University Of New Jersey Noninvasive diagnostic system for coronary artery disease
US5458117A (en) 1991-10-25 1995-10-17 Aspect Medical Systems, Inc. Cerebral biopotential analysis system and method
JP3585971B2 (en) * 1994-12-21 2004-11-10 富士通株式会社 Synchronizer for speech encoder and decoder
DE19538925C2 (en) * 1995-10-19 2000-07-27 Wieland Friedmund Device for evaluating anesthesia or intensive EEG
US5792062A (en) * 1996-05-14 1998-08-11 Massachusetts Institute Of Technology Method and apparatus for detecting nonlinearity in an electrocardiographic signal
US5940798A (en) * 1997-12-31 1999-08-17 Scientific Learning Corporation Feedback modification for reducing stuttering

Also Published As

Publication number Publication date
DE60118705D1 (en) 2006-05-24
US6748263B2 (en) 2004-06-08
EP1255486A1 (en) 2002-11-13
EP1255486B1 (en) 2006-04-12
WO2001060252A1 (en) 2001-08-23
DE60118705T2 (en) 2007-04-12
GB2359367B (en) 2003-11-05
ATE322861T1 (en) 2006-04-15
GB2359367A (en) 2001-08-22
CA2400348A1 (en) 2001-08-23
US20030109796A1 (en) 2003-06-12
GB0003665D0 (en) 2000-04-05

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