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1. WO2013131932 - SYSTEM AND METHOD FOR IMPROVED DETERMINATION OF A BRAIN RESPONSE STATE

Publication Number WO/2013/131932
Publication Date 12.09.2013
International Application No. PCT/EP2013/054450
International Filing Date 05.03.2013
Chapter 2 Demand Filed 07.01.2014
IPC
A61B 5/0484 2006.01
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
5Measuring for diagnostic purposes; Identification of persons
04Measuring bioelectric signals of the body or parts thereof
0476Electroencephalography
0484using evoked response
A61B 5/00 2006.01
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
5Measuring for diagnostic purposes; Identification of persons
CPC
A61B 5/04012
A61B 5/04845
A61B 5/165
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
5Measuring for diagnostic purposes
16Devices for psychotechnics
165Evaluating the state of mind, e.g. depression, anxiety
A61B 5/38
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
5Measuring for diagnostic purposes
24Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
316Modalities, i.e. specific diagnostic methods
369Electroencephalography [EEG]
377using evoked responses
38Acoustic or auditory stimuli
A61B 5/4088
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
5Measuring for diagnostic purposes
40Detecting, measuring or recording for evaluating the nervous system
4076Diagnosing or monitoring particular conditions of the nervous system
4088Diagnosing of monitoring cognitive diseases, e.g. Alzheimer, prion diseases or dementia
A61B 5/4848
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
5Measuring for diagnostic purposes
48Other medical applications
4848Monitoring or testing the effects of treatment, e.g. of medication
Applicants
  • SENSODETECT AB [SE]/[SE]
Inventors
  • KÄLLSTRAND, Johan
Agents
  • KIPA AB
Priority Data
12158150.805.03.2012EP
61/606,85405.03.2012US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) SYSTEM AND METHOD FOR IMPROVED DETERMINATION OF A BRAIN RESPONSE STATE
(FR) SYSTÈME ET PROCÉDÉ POUR LA DÉTERMINATION AMÉLIORÉE D'UN ÉTAT DE RÉPONSE CÉRÉBRALE
Abstract
(EN)
A device and a method for detecting a brain response state of a subject id disclosed. The detection comprises repeatedly presenting the subject with a sound stimulus for evoking a brain response. Detecting the evoked brain response signal related to each of said sound stimulus. Determining a window having a time width covering at least partly an area of at least one neuron's evoked response in the brain response signal. Calculating an average response signal over the window and comparing the at least one neuron's evoked response with the average response signal for determining a cellular variance and/or volatility.
(FR)
La présente invention concerne un dispositif et un procédé pour détecter un état de réponse cérébrale d'un sujet. La détection comprend l'application répétée au sujet d'un stimulus sonore pour induire une réponse cérébrale, la détection du signal de réponse cérébrale évoquée associé à chacun desdits stimulus sonores, la détermination d'une fenêtre ayant une durée couvrant au moins partiellement une zone de réponse évoquée d'au moins un neurone dans le signal de réponse cérébrale, le calcul d'un signal de réponse moyen sur la fenêtre et la comparaison de la réponse évoquée d'au moins un neurone au signal de réponse moyen pour déterminer une variance et/ou une volatilité cellulaire.
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