WO2017006062A1 - Systeme et procede de caracterisation du sommeil d'un individu - Google Patents
Systeme et procede de caracterisation du sommeil d'un individu Download PDFInfo
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- WO2017006062A1 WO2017006062A1 PCT/FR2016/051730 FR2016051730W WO2017006062A1 WO 2017006062 A1 WO2017006062 A1 WO 2017006062A1 FR 2016051730 W FR2016051730 W FR 2016051730W WO 2017006062 A1 WO2017006062 A1 WO 2017006062A1
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- activity signal
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- 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
- A61B5/316—Modalities, i.e. specific diagnostic methods
-
- 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
- A61B5/4806—Sleep evaluation
- A61B5/4815—Sleep quality
-
- 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
- A61B5/24—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]
- A61B5/375—Electroencephalography [EEG] using biofeedback
-
- 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
- A61B5/4806—Sleep evaluation
-
- 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
- A61B5/4806—Sleep evaluation
- A61B5/4809—Sleep detection, i.e. determining whether a subject is asleep or not
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- 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
- A61B5/7225—Details of analog processing, e.g. isolation amplifier, gain or sensitivity adjustment, filtering, baseline or drift compensation
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/74—Details of notification to user or communication with user or patient ; user input means
- A61B5/746—Alarms related to a physiological condition, e.g. details of setting alarm thresholds or avoiding false alarms
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M21/00—Other devices or methods to cause a change in the state of consciousness; Devices for producing or ending sleep by mechanical, optical, or acoustical means, e.g. for hypnosis
- A61M21/02—Other devices or methods to cause a change in the state of consciousness; Devices for producing or ending sleep by mechanical, optical, or acoustical means, e.g. for hypnosis for inducing sleep or relaxation, e.g. by direct nerve stimulation, hypnosis, analgesia
-
- 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
- A61B5/4806—Sleep evaluation
- A61B5/4812—Detecting sleep stages or cycles
-
- 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
- A61B5/4836—Diagnosis combined with treatment in closed-loop systems or methods
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M21/00—Other devices or methods to cause a change in the state of consciousness; Devices for producing or ending sleep by mechanical, optical, or acoustical means, e.g. for hypnosis
- A61M2021/0005—Other devices or methods to cause a change in the state of consciousness; Devices for producing or ending sleep by mechanical, optical, or acoustical means, e.g. for hypnosis by the use of a particular sense, or stimulus
- A61M2021/0011—Other devices or methods to cause a change in the state of consciousness; Devices for producing or ending sleep by mechanical, optical, or acoustical means, e.g. for hypnosis by the use of a particular sense, or stimulus in a subliminal way, i.e. below the threshold of sensation
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2230/00—Measuring parameters of the user
- A61M2230/08—Other bio-electrical signals
- A61M2230/10—Electroencephalographic signals
Definitions
- the invention relates to a system and method for characterizing the sleep of an individual.
- the invention applies to increasing the density (that is to say, the number over a determined period of time) and / or the amplitude of the sleep spindles (or “sleep spindles” according to the Anglo-Saxon denomination). ).
- the present invention is not only for people prone to sleep disorders such as insomnia but more generally to anyone wishing to improve its recovery capacity including during or after an effort, a trip, a stressful situation or something else.
- Sleep spindles are signals of cerebral electrical activity of frequencies generally between 9 and 16 Hz (Molle et al., 2011) and of amplitude ranging from 25 to 150 microvolts. There are sleep spindles of low frequencies and high frequencies, variable and specific to each individual. Sleep spindles usually last between 0.5 to 2 seconds and are the product of reticulo-thalamo cortical network activity.
- Sleep spindles appear during sleep, especially during the light sleep phase (phase called sleep NREM stage N2) (De Gennaro & Ferrara, 2003, De Gennaro, Ferrara, Curcio, & Cristiani, 2001). Indeed, during this phase, we see that they appear in greater numbers. We still distinguish it in deep sleep (phase called N3 stage of sleep) but are more rare or even absent in so-called paradoxical sleep (phase called N4 stage of sleep or REM sleep). Sleep spindles are often referred to as "sleep wardens" and usually a high density of sleep spindles is associated with effective sleep. Conversely, the scientific literature has recently shown that a low density of sleep spindles seems to be a sign of sleep disturbed by stress (Dang-Vu et al., 2015).
- the neurological feedback treatment or Neuwfeedback in Anglo-Saxon terminology consists for example in a training of the individual to help him relax and encourage him to modify its cerebral activity, in particular by the production of a certain class of brain waves.
- This neurofeedback treatment device is designed to encourage the production of ⁇ or Sensori-Motor Rhythm (SMR) waves.
- SMR Sensori-Motor Rhythm
- the frequency of these waves is generally between 9 Hz and 16 Hz.
- These waves appear at sleep (phase called NI stage of sleep), that is to say the transition between wakefulness and sleep. This phase is often accompanied by signs of fatigue such as yawning.
- This phase is the seat of waves SMR and a.
- a waves have a frequency generally between 8 Hz and 13 Hz and are generally associated with attention and alertness.
- SMR waves can also be present in a state of relaxation in the waking state. They disappear with attention. Since alpha and SMR waves may have overlapping frequencies or some filters may pass some of the brain activity corresponding to the alpha wave frequency window, the specific training of SMR waves may be compromised in the as it is the alpha waves that will be driven and not the SMR waves.
- SMR wave training is also used in various applications such as those aimed at improving the symptoms of attention deficit disorder with or without hyperactivity (Arns, Feddema, & Kenemans, 2014). relaxation and, as described in US 2013/150659, improvement of sleep (see also Cortoos et al., 2010).
- the training of SMR waves would allow an improvement of certain cognitive performances (Schabus et al., Brain research (2008), 1191, 127-135 and Stuart et al., Neuroscience and Biobehaviour (2011), 35, 1154-1165) and drive.
- cognitive performances Schot al., Brain research (2008), 1191, 127-135 and Stuart et al., Neuroscience and Biobehaviour (2011), 35, 1154-1165
- there are certain disparities in the effectiveness of such neurological feedback treatment depending on the individual including the fact that until now, the teaching from the prior art has always bet on a failure to take into account a personalization or a specific adaptation of such treatment to a particular individual.
- the invention therefore aims to overcome the problems mentioned above.
- the inventors have thus discovered that sleep spindles, which have a frequency specific to each individual, play an important role during the light sleep phase by their waking inhibitory effect.
- a training of the brain waves emitted by the individual in the awake state and based on frequency intervals of Standardized SMR waves without taking into account any specific frequency range corresponding to sleep spindles specifically emitted by an individual in the asleep state does not allow effective customization of a treatment to a particular individual.
- Such a treatment only allows the stimulation of certain SMR waves whose frequencies do not necessarily correspond to those of the sleeping spindles of said individual in the asleep state.
- This type of training which does not guarantee or at least obtain in a simple and fast way an increase in the density and amplitude of the spindles of sleep, does not offer a satisfactory efficiency on the treatment of disorders especially sleep.
- the invention proposes a system for characterizing the sleep of an individual, comprising:
- a measurement device adapted to measure a signal of brain activity representative of the brain waves
- an electronic central unit adapted to:
- a communication interface connected to the central unit and adapted to emit a warning signal perceptible by the individual when the parameter of the cerebral activity signal in the frequency range corresponding to the reduced range of sleep spindles exceeds the threshold, preferably during a determined period of time, such as at least 0.25 seconds.
- the system that is the subject of the present invention can also make it possible to characterize the individual frequency of an Alpha peak (iAPF of English, "individual alpha peak frequency”) during the first two minutes during which the eyes of the individual are closed.
- This characterization informs about the best choice of filtering parameters to set up in order to select at least a reduced range of sleep spindles and / or to modify frequency parameters, for example by installing higher order filters and more specific.
- This selection makes it possible to avoid any overlap between the specific frequency band to be trained corresponding to the sleep spindles and the specific frequency band of the alpha waves that one does not wish to cause.
- These provisions make it possible to better characterize the range of reduced spindles of sleep proper to the individual and thus to improve the training. The user can thus more effectively improve the quality of his sleep.
- the frequency of the alpha waves is generally between 7 and 13 Hz.
- the spectral power density of the alpha waves corresponds to the distribution of the amplitude in volts of these waves between the frequencies ranging from 7 to 13 Hz.
- alpha waves we subtract the power spectrum between 7 and 13 Hz, that is to say the amplitude of these waves, obtained in the subject in the awake state having the eyes open to the spectrum of the same individual to the awake state with eyes closed. This amounts to keeping only the overall power spectrum of the alpha waves which therefore defines the individual frequency of the alpha peak of a particular individual.
- the individual frequency of the alpha peak thus corresponds to the absolute maximum of the amplitude in this frequency window ranging from 7 to 13 Hz. (Klimesch W.
- the individual frequency of the alpha peak can be measured (in Hertz) according to another embodiment by the following calculation: a ratio of the weighted sum of the spectral powers in a frequency window between 7 and 13 Hz on the total spectral power of the alpha waves in the window, the spectral powers of the weighted sum being weighted by the frequencies of the window:
- the characterization system comprises an electronic central unit which is adapted to identify, beforehand, the sleep spindles and within a frequency window of between 7 and 13 Hz, the individual frequency of the alpha peak of the 'individual.
- the latter is therefore defined within a window of frequencies between 7 and 13 Hz and after subtraction of the power spectrum obtained in an individual with open eyes from that obtained in an individual with eyes closed.
- the question of the specificity of the training can also be improved by measuring this individual frequency of the alpha waves in order to provide a more specific feedback at the level of the generation of the spindles of sleep while avoiding that a unwanted alpha signal does not interfere with these.
- the characterization system implements, during the first use or at each new use, a learning phase to specifically characterize the individual's sleep by identifying the sleep zones that are specific to him and to allow him to driving said sleep spindles. By particularizing each individual the range of frequencies to be trained, the effectiveness of the neurological feedback treatment on a set of individuals can be improved.
- the electronic central unit may be adapted to detect, in the 9 to 16 Hz frequency range of the cerebral activity signal of the sleeping individual, the brain waves of the sleeping individual with an amplitude greater than 15 ⁇ and a duration between 0.5 seconds and 2 seconds.
- the electronic central unit can be adapted to:
- the reduced range of sleep spindles as the reduced range of frequencies in which the cerebral activity signal exceeds the threshold at a greater number of times.
- the measuring device may comprise:
- At least one ground electrode, a reference electrode and a measurement electrode which can optionally be combined within the same electrode having both functions, more particularly for the reference and measurement functions, connected to the CPU and arranged on the support for measuring an electrical potential difference between the reference, mass and measurement electrodes as a cerebral activity signal.
- the central unit can be mounted on the support and be adapted to amplify the cerebral activity signal.
- the central unit can be adapted to digitize the cerebral activity signal.
- the reference electrodes can be dry electrodes. They may, however, also be wet electrodes semi-dry electrodes or semi-wet electrodes. According to a particular embodiment of the invention, each type of electrode may have a particular and different nature.
- the communication interface can be portable by hand by the individual.
- the central unit can be within a headset connected to the communication interface or within an external device or remote, such as a server.
- the CPU may be adapted to modify, i.e., raise or lower, the threshold and / or a time period above the threshold.
- the parameter of the cerebral activity signal may be selected from an amplitude and a density.
- the invention proposes a method for characterizing the sleep of an individual, comprising the steps of: measure a signal of brain activity representative of the brain waves,
- the step of identifying the reduced range of sleep spindles may include detecting, within the 9 to 16 Hz frequency range of the cerebral activity signal of the dormant individual, brain waves of the sleeping individual exhibiting an amplitude greater than 15 ⁇ and a duration of between 0.5 seconds and 2 seconds.
- the step of identifying the reduced range of sleep spindles may include:
- the reduced range of sleep spindles as the reduced range of frequencies in which the parameter of the cerebral activity signal exceeds the threshold at a greater number of times.
- the method of characterization may comprise during the step of identifying the reduced range of sleep spindles, a prior identification of the individual frequency of the individual's alpha peak, defined within a window of frequencies between 7 to 13 Hz.
- the spectral power density of the alpha waves corresponds to the distribution of the amplitude in volt of these waves between the frequencies ranging from 7 to 13 Hz.
- To obtain the signal of the alpha waves one subtract the power spectrum between 7 and 13 Hz, that is to say the amplitude of these waves, obtained in the awake subject having the eyes open to the spectrum of the same individual in the awake state having the eyes closed.
- the individual frequency of the alpha peak thus corresponds to the absolute maximum of the amplitude in this frequency window ranging from 7 to 13 Hz.
- the individual frequency of the peak alpha can be measured (in Hertz), according to another embodiment, by the following calculation: a ratio of the weighted sum of the spectral powers in a frequency window of between 7 and 13 Hz on the spectral power total of the alpha waves in the window, the spectral powers of the weighted sum being weighted by the frequencies of the window:
- the individual frequency of the alpha peak is defined specifically for a particular individual, it then makes it possible to characterize one or more tangible terminals making it possible to discriminate the frequencies of the alpha waves and those of the sleep spindles of the individual in question. thus to get rid of all the alpha waves having a frequency close to that of the sleep spindles in order to allow an analysis of the frequencies of the spindles of unpolluted sleep by the frequencies of the alpha waves.
- the step of measuring the cerebral activity signal may include measuring an electrical potential difference between reference, mass and measurement electrodes.
- the characterization method may provide, during the step of comparing the parameter of the cerebral activity signal to the threshold, to modify the threshold.
- “Change threshold” means any action to raise or lower the threshold level.
- the method of characterization may provide, during the step of comparing the parameter of the cerebral activity signal to the threshold, to select the parameter from an amplitude and a density.
- FIG. 1 is a representation of a sleep characterization system of an individual, comprising a measuring device in the form of a helmet adapted to measure a cerebral activity signal representative of the brain waves, and a central unit electronics adapted to identify at least a reduced range of individual sleep spindles, and a portable hand-held communication interface for providing a warning signal when a cerebral activity signal parameter in the reduced range of sleep spindles exceeds a threshold,
- FIG. 2 is a schematic representation of the frequency ranges of ⁇ waves and ⁇ or Sensori-Motor Rhythm (SMR) waves emitted in the drowsiness phase, and sleep spindles (spindle) emitted in the sleep phase. light by two different individuals,
- SMR Sensori-Motor Rhythm
- FIG. 3 is a representation of the cerebral activity signal representative of the brain waves of the individual acquired by the measuring device of FIG. 1, identifying the reduced range of sleep spindles specific to the individual,
- FIG. 4 is a diagram illustrating a method of characterization of sleep implemented by the sleep characterization system of FIG. 1.
- FIG. 1 shows an embodiment of a user 2 sleep characterization system 1 for use in neurological feedback processing to improve the user's sleep speed and sleep quality 2.
- the characterization system 1 comprises:
- a measuring device 5 adapted to measure a cerebral activity signal representative of the brain waves of the user's brain 2, and
- the measuring device 5 is in the form of a helmet 6 comprising a support 7, possibly adjustable, intended to be placed on the head of the user 2.
- the cerebral activity signal is measured in the form of a electrical potential difference between one or more reference electrodes 8, a ground electrode 11 and one or more measuring electrodes 9 arranged on the support 7 as appropriate.
- the reference electrodes 8, 9 and mass 11 are preferably dry electrodes.
- the reference electrodes 8, of mass 11 and measurement 9 and the electronic processor are connected by a wired link 23 or wirelessly to the central unit 21.
- the central unit 21 may comprise an electronic processor, an amplifier adapted to amplify the cerebral activity signal and an analog-to-digital converter adapted to digitize the cerebral activity signal.
- the cerebral activity signal acquired by the reference electrodes 8, of mass 11 and measuring electrode 9 and then digitized and amplified can thus be transmitted to the processor of the central processing unit 21 for processing.
- the central unit 21 may be provided in the helmet 6.
- the central unit 21 is connected to the communication interface 22 with the user.
- the communication interface 22 comprises two earphones 10 mounted on the helmet 6 to be placed on the ears of the user 2 in order to be able to deliver a sound warning signal representative of the transmission of a particular brain wave.
- the communication interface 22 also includes any other appropriate electronic device portable by hand such as a mobile phone, a tablet, a PDA or other.
- the communication interface 22 may in particular comprise a screen for displaying a warning signal, in particular a visual signal.
- the screen can be touch-sensitive to interact with the central unit 21. In a complementary or alternative way, an interaction with the central unit 21 can be obtained via a keyboard, one or more activation buttons. , a memory card reader or other belonging to the communication interface 22.
- Figure 2 illustrates the frequency decomposition of the cerebral activity signal of two individuals.
- the brain activity of each individual is characterized by: - waves emitted in a frequency range between 8 Hz and 13 Hz for one of the individuals identified as subject 1, and in a frequency range between 8 Hz and 12 Hz for the other individual identified as subject 2 ,
- SMR Sensori-Motor Rhythm
- the brain activity of each individual is characterized by sleep spindles or spindles emitted in a reduced range of sleep spindles between 12 Hz and 15 Hz for the subject 1, and in a reduced range of sleep spindles between 13.5 Hz and 16 Hz for subject 2. It appears that the reduced range of sleep spindles, whose waking inhibitory effect plays an important role during the light sleep phase, is specific to each individual.
- the central unit 21 is adapted to perform a frequency decomposition of the cerebral activity signal and to identify, in a frequency range of 9 to 16 Hz, the range or ranges.
- the reduced range (s) of sleep spindles comprise the brainwave frequencies of the user 2 in the state. asleep having an amplitude greater than 15 ⁇ and a duration of between 0.5 seconds and 2 seconds.
- the identification of a reduced range of sleep spindles can be performed in the asleep state of the user 2 by detecting, in the 9 to 16 Hz frequency range of the cerebral activity signal during the light sleep phase, brain waves having an amplitude greater than 15 ⁇ and a duration of between 0.5 second and 2 seconds.
- identification of the reduced range of sleep spindles could be accomplished by an iterative process of modulating a reduced range of frequencies to identify the reduced range of frequencies corresponding to that of the sleep spindles.
- the iterative process provides for determining, in the 9 to 16 Hz frequency range of the cerebral activity signal of the sleeping individual, a plurality of reduced frequency ranges.
- a parameter such as an amplitude or a density, that is to say a number of peaks having a minimum amplitude over a determined period of time, of the cerebral activity signal of the individual asleep is compared to a representative threshold of the same parameter for sleep spindles.
- the reduced range of sleep spindles can then be defined as the reduced range of frequencies in which the signal of brain activity exceeds the threshold at a greater number of times.
- the central unit 21 can then compare at least one parameter of the cerebral activity signal to the awake state in the frequency range corresponding to the reduced range of sleep spindles to one. threshold.
- the frequency range corresponding to the reduced range of sleep spindles is different, generally narrower and possibly offset, from the SMR frequency range.
- the parameter is, for example, chosen from an amplitude and a density, that is to say a number of peaks having a minimum amplitude determined over a predetermined period.
- the central unit 21 is then adapted to control the transmission of the audible warning signal in the earphones 10 and the visual warning signal on the screen of the communication interface 22 when the parameter of the cerebral activity signal in the frequency range corresponding to the reduced range of sleep spindles exceeds the threshold, preferably for a specified period of time, such as at least 0.25 seconds.
- the difference in electrical potential between the reference electrodes 8, of mass 11 and measurement 9 is measured by the headphones 6 to obtain the cerebral activity signal representative of the brain waves of the user 2.
- This cerebral activity signal is amplified and digitized by the central unit 21.
- the central unit 21 identifies the reduced range of sleep spindles of the user 2.
- This reduced range of sleep spindles includes the brainwave frequencies of the sleeping user having an amplitude greater than 15 ⁇ and a duration of between 0.5 seconds and 2 seconds.
- the difference in electrical potential between the reference electrodes 8, of mass 11 and measurement 9 is measured by the headphones 6 to obtain the cerebral activity signal representative of the brain waves of the user 2.
- This cerebral activity signal is amplified and digitized by the central unit 21.
- the CPU 21 compares to the threshold at least one of the following two parameters such as amplitude or density.
- the audible warning signal is emitted in the 10 and the visual warning signal is displayed via the communication interface 22.
- the communication interface 22 can be adapted to issue any other type of warning signal and in particular , tactile, olfactory or taste.
- the user 2 is thus warned of the emission of brain waves promoting the quality of sleep.
- a Neurofeedback treatment can be set up to improve the quality of the user's sleep 2.
- the Neurofeedback treatment then comprises a training aimed at encouraging the user 2 to produce the desired brain waves.
- the training includes one or more relaxation and exercise sequences rewarding the emission of brain waves desired by particular warning signals.
- the threshold may be increased to advance user 2 in the production of appropriate brainwaves.
- the threshold can also be lowered to make it easier for a user who is not performing well. Complementarily or alternatively, it is possible to play on the determined period during which the threshold must be exceeded to emit the warning signal to complicate or simplify training.
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Abstract
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Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
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KR1020187000295A KR20180026720A (ko) | 2015-07-07 | 2016-07-07 | 개인의 수면을 특성화하는 시스템 및 방법 |
EP16750933.0A EP3319516A1 (fr) | 2015-07-07 | 2016-07-07 | Systeme et procede de caracterisation du sommeil d'un individu |
CN201680039762.XA CN107847177B (zh) | 2015-07-07 | 2016-07-07 | 用于表征个体的睡眠的系统和方法 |
JP2017567245A JP6913036B2 (ja) | 2015-07-07 | 2016-07-07 | 個人の睡眠の特性化のためのシステム |
CA2989986A CA2989986A1 (fr) | 2015-07-07 | 2016-07-07 | Systeme et procede de caracterisation du sommeil d'un individu |
US15/738,316 US11051752B2 (en) | 2015-07-07 | 2016-07-07 | System and method for characterizing the sleep of an individual |
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FR1556421 | 2015-07-07 | ||
FR1556421A FR3038509B1 (fr) | 2015-07-07 | 2015-07-07 | Systeme et procede de caracterisation du sommeil d'un individu |
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WO2017006062A1 true WO2017006062A1 (fr) | 2017-01-12 |
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US (1) | US11051752B2 (fr) |
EP (1) | EP3319516A1 (fr) |
JP (1) | JP6913036B2 (fr) |
KR (1) | KR20180026720A (fr) |
CN (1) | CN107847177B (fr) |
CA (1) | CA2989986A1 (fr) |
FR (1) | FR3038509B1 (fr) |
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JP2018524084A (ja) | 2018-08-30 |
CN107847177A (zh) | 2018-03-27 |
CN107847177B (zh) | 2021-06-08 |
JP6913036B2 (ja) | 2021-08-04 |
US20180263553A1 (en) | 2018-09-20 |
FR3038509B1 (fr) | 2017-08-11 |
US11051752B2 (en) | 2021-07-06 |
EP3319516A1 (fr) | 2018-05-16 |
CA2989986A1 (fr) | 2017-01-12 |
FR3038509A1 (fr) | 2017-01-13 |
KR20180026720A (ko) | 2018-03-13 |
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