Abstract: The present invention provides a system for selecting appropriate brain-training content for each user. The selection system includes: a storage unit for storing detection values obtained by detecting blood flow rates in the head of a user, identifiers for predetermined test content to be performed by the user at the time of the detection of the detection values, and an identifier for the user in association with one another; a calculation unit for calculating, on the basis of the detection values stored in the storage unit, brain-activity values indicating the degree of brain-activity of the user when the predetermined test content is performed by the user; and a selection unit for selecting, on the basis of the brain-activity values calculated by the calculation unit during performance of the predetermined test content, brain-training content to be performed by the user.

Abstract: In a biophotonic measurement device based on the principles of near-infrared spectroscopy (NIRS), in order to realize appropriate conditions in any light-source/detector arrangement and various required specifications, a photoirradiation module 13 including a light source 101, a photodetection module 14 including a photodetector 102, and a central control/analysis unit 18 are provided. The central control/analysis unit 18 acquires correspondence relations between each of photodetection units and photoirradiation units by using a correspondence acquiring unit 19. The photoirradiation module 13 and the photodetection module 14 switch signal detection methods at each measurement point by utilizing an evaluation function value determined by detection output of the photodetector 102 so that the plurality of signal detection methods are mixable, and the high-precision and optimum biophotonic measurement device is realized.

Abstract: The present invention provides a system for selecting appropriate brain-training content for each user. The selection system includes: a storage unit for storing detection values obtained by detecting blood flow rates in the head of a user, identifiers for predetermined test content to be performed by the user at the time of the detection of the detection values, and an identifier for the user in association with one another; a calculation unit for calculating, on the basis of the detection values stored in the storage unit, brain-activity values indicating the degree of brain-activity of the user when the predetermined test content is performed by the user; and a selection unit for selecting, on the basis of the brain-activity values calculated by the calculation unit during performance of the predetermined test content, brain-training content to be performed by the user.

Abstract: This information processing device is provided with: a receiving unit which receives a detected value detected by means of a head-mounted device which is worn on the head of a user and detects the blood flow rate in the head; a calculating unit which extracts a first signal by passing the detected value through a first filter which extracts a signal in a first frequency band, extracts a second signal by passing the detected value through a second filter which extracts a signal in a second frequency band, which is a frequency band that is higher than the first frequency band, and extracts a third signal, which is the envelope of the second signal, from the second signal; and an output unit which outputs the first signal and the third signal in association with one another.

Abstract: In a biophotonic measurement device based on the principles of near-infrared spectroscopy (NIRS), in order to realize appropriate conditions in any light-source/detector arrangement and various required specifications, a photoirradiation module 13 including a light source 101, a photodetection module 14 including a photodetector 102, and a central control/analysis unit 18 are provided. The central control/analysis unit 18 acquires correspondence relations between each of photodetection units and photoirradiation units by using a correspondence acquiring unit 19. The photoirradiation module 13 and the photodetection module 14 switch signal detection methods at each measurement point by utilizing an evaluation function value determined by detection output of the photodetector 102 so that the plurality of signal detection methods are mixable, and the high-precision and optimum biophotonic measurement device is realized.

Abstract: The present invention is capable of separating/removing the influence of skin blood flow contained in near infrared spectroscopy (NIRS) signals and extracting a brain- or brain cortex-origin signal. Moreover, the present invention enables versatile separation of brain-origin and skin-origin signals in view of differences among individuals. A biological photometric device, wherein light transmitters and light receivers are located in such a manner that measurement can be conducted at a plurality of source-detector (SD) distances and light received by the individual light-receivers can pass through the gray matter to thereby separate a brain-origin signal and a skin-origin signal. Individual component analysis (ICA) is conducted on data obtained at the individual measurement points. Then, it is determined whether each individual component originates in the brain or in the skin with the use of the SD distance-dependency of the weighted value of each of the separated components.

Abstract: The present invention is capable of separating/removing the influence of skin blood flow contained in near infrared spectroscopy (NIRS) signals and extracting a brain- or brain cortex-origin signal. Moreover, the present invention enables versatile separation of brain-origin and skin-origin signals in view of differences among individuals. A biological photometric device, wherein light transmitters and light receivers are located in such a manner that measurement can be conducted at a plurality of source-detector (SD) distances and light received by the individual light-receivers can pass through the gray matter to thereby separate a brain-origin signal and a skin-origin signal. Individual component analysis (ICA) is conducted on data obtained at the individual measurement points. Then, it is determined whether each individual component originates in the brain or in the skin with the use of the SD distance-dependency of the weighted value of each of the separated components.

Abstract: An optical measurement instrument for living body includes: a plurality of light irradiation means for irradiating an object being tested with light; a plurality of light reception means for detecting the light that is irradiated to the object being tested and propagates inside the object being tested; and a calculation unit for calculating hemodynamics of a plurality of factors inside the object being tested from the detection signal detected by the light reception means, wherein the calculation unit includes a separation calculation unit for separating a plurality of signals from the detection signals; a selection unit for calculating a correlation coefficient between a plurality of the signals separated to select a signal in which a correlation coefficient is a predetermined value or greater as a noise signal; and a reconstruction calculation unit for reconfiguring the detection signal excluding the noise signal selected by the selection unit.

Abstract: A typical task assigned for measuring a brain activity signal lasts from 10 to 30 seconds. The frequency band of the Mayer wave noise signal is very close to the frequency bands of brain activity signals, a result, it is difficult to reduce the Mayer wave noise signal using a bandpass filter or a bandcut filter. Light irradiating units and light detecting units for detecting the emitted light that has been passed through or reflected within the tissue are provided. A biological signal measuring unit measures at least one of the pulsation, breathing, blood pressure, and temperature. The relationship between an optical signal obtained by the light detecting unit and a biological signal using non-linear analysis; and a computation for separating the biological noise signal from the optical signal on the basis of the obtained relationship.

Abstract: An optical measurement instrument for living body that comprises: a plurality of light irradiation means for irradiating an object being tested with light; a plurality of light reception means for detecting the light that is irradiated to the object being tested and propagates inside the object being tested; and a calculation unit for calculating hemodynamics of a plurality of factors inside the object being tested from the detection signal detected by the light reception means, wherein the calculation unit comprises: a separation calculation unit for separating a plurality of signals from the detection signals; a selection unit for calculating a correlation coefficient between a plurality of the signals separated to select a signal in which a correlation coefficient is a predetermined value or greater as a noise signal; and a reconstruction calculation unit for reconfiguring the detection signal excluding the noise signal selected by the selection unit.

Abstract: A response period is determined arbitrarily. A satisfactory detecting ability may not be provided because of an artifact or the like contained in a signal. Therefore, an effective detection method and an effective display method of presenting results of detection must be developed. A series of tasks (stimuli) or a selected measurement signal is used as a reference signal, and a phase difference of any other measurement signal from the reference signal is calculated. The synchronousness of the phase of the measurement signal with the phase of the reference signal is numerically expressed. The thus obtained numerical value is statistically processed in order to numerically express a degree of reliability. Thus, a brain activity or a functional connectivity is visualized.

Abstract: An image generating methodology for displaying brain activation areas with improved accuracy in a living body light measurement system for generating an image of the changes in blood volume of the brain. A spatial intensity distribution of changes in blood volume can be generated by detecting brain activation in many sampling points, and a spatial interpolation process is executed on this data. A threshold process is executed on the distribution to extract the distribution of coordinates having a signal intensity of at least the predetermined threshold. The displacement between the brain activation area and the maximal location of the distribution is stored in a recording unit of the system in order to compensate for the distribution extracted by the threshold process. Accordingly, brain activation areas can be estimated with greater location accuracy, and the diagnosis and medial treatment for brain diseases can likewise be executed with greater accuracy.

Abstract: Disclosed is an optical measurement apparatus for a living body to provide a means for measuring blood flow activity within a short time inside the body, even if the test subject cannot distinguish between the active task period and the rest period. An optical measurement apparatus for a living body comprises a light irradiating section, and a light detecting section for detecting light transmitting through or reflected from the interior of the body. The concentration of carbon dioxide gas taken into the body is controlled by the respiration of the test subject and the resulting change in output from the light detecting section is then evaluated.

Abstract: A typical task assigned for measuring a brain activity signal lasts from 10 to 30 seconds. The frequency band of the Mayer wave noise signal is very close to the frequency bands of brain activity signals, a result, it is difficult to reduce the Mayer wave noise signal using a bandpass filter or a bandcut filter. Light irradiating units and light detecting units for detecting the emitted light that has been passed through or reflected within the tissue are provided. A biological signal measuring unit measures at least one of the pulsation, breathing, blood pressure, and temperature. The relationship between an optical signal obtained by the light detecting unit and a biological signal using non-linear analysis; and a computation for separating the biological noise signal from the optical signal on the basis of the obtained relationship.

Abstract: A response period is determined arbitrarily. A satisfactory detecting ability may not be provided because of an artifact or the like contained in a signal. Therefore, an effective detection method and an effective display method of presenting results of detection must be developed. A series of tasks (stimuli) or a selected measurement signal is used as a reference signal, and a phase difference of any other measurement signal from the reference signal is calculated. The synchronousness of the phase of the measurement signal with the phase of the reference signal is numerically expressed. The thus obtained numerical value is statistically processed in order to numerically express a degree of reliability. Thus, a brain activity or a functional connectivity is visualized.

Abstract: An image generating methodology for displaying brain activation areas with improved accuracy in a living body light measurement system for generating an image of the changes in blood volume of the brain. A spatial intensity distribution of changes in blood volume can be generated by detecting brain activation in many sampling points, and a spatial interpolation process is executed on this data. A threshold process is executed on the distribution to extract the distribution of coordinates having a signal intensity of at least the predetermined threshold. The displacement between the brain activation area and the maximal location of the distribution is stored in a recording unit of the system in order to compensate for the distribution extracted by the threshold process. Accordingly, brain activation areas can be estimated with greater location accuracy, and the diagnosis and medial treatment for brain diseases can likewise be executed with greater accuracy.

Abstract: The training of a trainee is performed in response to an instruction from a training task presentation (110) and the trainee responds by using a trainee's response collection unit (111). At the same time, a brain activity measurement unit (101) and a signal converter (103) using a cable (102) for transmitting signals of brain activity measure the brain activity of the trainee. Through a comparison between a response from the trainee and the result of brain activity measurement, a training effect is evaluated and a next training task to be performed is determined. For optimum training, the training is evaluated based on both of a training effect which can be evaluated from the outer appearance and brain activity corresponding thereto.

Abstract: Disclosed is an optical measurement apparatus for a living body to provide a means for measuring blood flow activity within a short time inside the body, even if the test subject cannot distinguish between the active task period and the rest period. An optical measurement apparatus for a living body comprises a light irradiating section, and a light detecting section for detecting light transmitting through or reflected from the interior of the body. The concentration of carbon dioxide gas taken into the body is controlled by the respiration of the test subject and the resulting change in output from the light detecting section is then evaluated.