National Institute of Information and Communications Technology, Incorporated

Takanori Maesako

Hideo Eda

Katsuo Sugai

Yasufumi Kuroda

Sayaka Tanaka

A body activity measurement device is provided with a light irradiation unit that irradiates near infrared light of a specified wavelength on a specified measurement site of a brain of a subject; a light detector that detects the intensity of the light exiting from the measurement site; a light absorbance data generator that from the time sequence changes of the intensity of the exiting light generates light absorbance time sequence data suggesting the changes in the concentration of oxyHb, deoxyHb and totalHb; and multiple baseline correction units that correct baselines that mutually differ in relation to the light absorbance time sequence data obtained when the subject performs specified assignments; and configured such that the baseline correction of the light absorbance time sequence data can be conducted using the baseline correction units corresponding to the assignment performed by the subject.

Body activity measurement device

In order to offer a new and useful device in being able to objectively assess the psychological state when a subject performs an assignment, a psychological state assessment device is configured to irradiate a specified measurement site in the brain of a subject with near infrared light of a specified wavelength, to obtain time change data indicating time change data for the amount of blood and/or amount of blood components respectively while performing a task and while at rest, and to assess the psychological state of the subject while performing the assignment based on time change data during the rest period in comparison with time change data while performing the task.

Psychological state assessment device, psychological state assessment method

A deviceto measure a degree of acquisition is provided to present objective scientific data of an educational effect by applying brain science to an educational field. A deviceto measure a degree of acquisition comprises a measuring portionthat measures a blood amount or/and a blood component amount in a predetermined measuring region S of brains of a subject P, a diachronic change data producing portionthat obtains the blood amount or/and the blood component amount measured in the above-mentioned measuring portionchronologically and produces diachronic change data as data showing diachronic change of the blood amount or/and the blood component amount, and a waveform output portionthat outputs a waveform of the diachronic change data in each work in a comparable manner in case the subject P repeatedly conducts the predetermined work several times.

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Osaka, Japan

Takanori Maesako