Abstract: Disclosed is a device using a biological optical measurement technology to evaluate mood states in daily life of an examinee by presenting a first task once or a plurality of times and then presents a second task a plurality of times, calculating a hemoglobin signal of a predetermined measurement point for the first task and a hemoglobin signal of a predetermined measurement point for the second task, and calculating quantitative values using the obtained hemoglobin signals.

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 mental state, such as mood or emotion, of an individual can be apprehended by a method using non-invasive biological light measurement technology. A biological light measurement device, which has an irradiation section, presents different tasks (at least a first task and a second task) to a subject, hemoglobin signals based on changes in the concentration of oxygenated hemoglobin and deoxygenated hemoglobin in the subject are calculated from the strength of light detected by a detection section, and a relative value using the hemoglobin signal at a predetermined measurement channel with respect to the first task, and the hemoglobin signal at a different predetermined measurement channel with respect to the second task is calculated.

Abstract: An optical measurement instrument for a living body having an optical fiber removed, which is composed so as to transmit a driving signal for the light source to a plurality of an irradiation parts, as well as to convert a transmitted and received signal, between a processing and control unit and the probe unit, to a row of serial digital signals, by having one driving device for light source and one multiplexer, inside the probe unit.

Abstract: There is provided an optical bioinstrumentation device, with which measurement data reflect more correctly the information inside the living body with less noise even the subject moves when the information inside the living body is measured by using the light. In the present invention, the means for fixing the part other than the tips of the optical fibers for irradiation and detection on the fixing member which is to fix the tips of the optical fiber for irradiation and detection on the subject, or, the means for fixing the optical fiber is fixed on the fixing member which is to fix the end of the optical fiber on the subject, or the means for fixing the optical fiber at two or more positions on the subject.

Abstract: A head-coupled holder the optical measurement of a living body that securely brings a light irradiation module and a light detection module in close contact with the scalp of a person to be examined, and gives the person no excessive pressure feeling. Each light irradiation module and light detection module includes a contactor having a contact portion that comes in contact with the scalp at a leading end thereof, and exposes a leading end of a light guide to the contact portion to form the light guide, and a package having a lower portion to which the contactor is attached. The contactor is fixed to the lower portion of the package through an elastic body, and the package is fixed to an inner upper wall of the insertion hole with a series structure of the elastic body and the viscoelastic body.

Abstract: There is provided an optical bioinstrumentation device, with which measurement data reflect more correctly the information inside the living body with less noise even the subject moves when the information inside the living body is measured by using the light. In the present invention, the means for fixing the part other than the tips of the optical fibers for irradiation and detection on the fixing member which is to fix the tips of the optical fiber for irradiation and detection on the subject, or, the means for fixing the optical fiber is fixed on the fixing member which is to fix the end of the optical fiber on the subject, or the means for fixing the optical fiber at two or more positions on the subject.

Abstract: A head-coupled holder for living body optical measurement that securely brings a light irradiation module and a light detection module in close contact with a scalp, and gives the person to be examined no excessive pressure feeling. Each of the light irradiation module and the light detection module includes a contactor having a contact portion that comes in contact with a scalp of the person to be examined at a leading end thereof, and exposes a leading end of a light guide to the contact portion to form the light guide, and a package having a lower portion to which the contactor is attached. The contactor is fixed to the lower portion of the package through an elastic body, and the package is fixed to an inner upper wall of the insertion hole with a series structure of the elastic body and the viscoelastic body.

Abstract: To make the peak value of the driving current of light source smaller than the conventional one and to make the peak value of the light receiving level of light-sensitive elements smaller than the conventional one in order to save power consumption of the device and to improve the precision of measurement, codes of which the bits of the Hadamard codes are shifted by the same bit for each code series having the same bit cycle, or codes of which the bits of a PN code are shifted are used as different codes.

Abstract: An optical measurement instrument for a living body having an optical fiber removed, which is composed so as to transmit a driving signal for the light source to a plurality of an irradiation parts, as well as to convert a transmitted and received signal, between a processing and control unit and the probe unit, to a row of serial digital signals, by having one driving device for light source and one multiplexer, inside the probe unit.

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.