Abstract: A dementia symptom detection system includes an information processor which determines the level of dementia of a user based on (i) a reference value which is for an index corresponding to behavioral and psychological symptoms of dementia and which is determined based on the history of the activity amount stored in storage and the history of device operation information stored in the storage, and (ii) a personal value of the user which is for the index and which is determined based on the detected activity amount of the user and the obtained device operation information of the user.

Abstract: A biological signal measurement system includes: a biological signal measurer that measures a biological signal including external noise of biological noise and of environmental noise; biological noise measurer that measures a signal including the biological noise; a biological noise estimator that estimates the biological noise from the signal measured by the biological noise measurer; an environmental noise measurer that measures a signal including the environmental noise; an environmental noise estimator that estimates the environmental noise from the signal measured by the environmental noise measurer; and a calculator that calculates the biological signal in consideration of an effect of the external noise using the signal measured by the biological signal measurer, the biological noise estimated by the biological noise estimator and the environmental noise estimated by the environmental noise estimator.

Abstract: An electroencephalogram measurement system includes an acquisition unit, a decision unit, and an output unit. The acquisition unit acquires electroencephalogram information representing an electroencephalogram obtained by an electrode unit placed on a region of interest that forms part of a subject's head. The decision unit makes a decision, based on the electroencephalogram information acquired by the acquisition unit, whether or not there are any artifacts. The output unit outputs the decision made by the decision unit.

Abstract: A dementia symptom detection system includes an information processor which determines the level of dementia of a user based on (i) a reference value which is for an index corresponding to behavioral and psychological symptoms of dementia and which is determined based on the history of the activity amount stored in storage and the history of device operation information stored in the storage, and (ii) a personal value of the user which is for the index and which is determined based on the detected activity amount of the user and the obtained device operation information of the user.

Abstract: An intellectual-productivity analysis apparatus includes a presentation device, an input device, and an evaluation device. The presentation device presents a plurality of questions to a test subject. The input device allows the test subject input an answer to each question. The evaluation device includes a work memory part and an evaluating arithmetic part. The work memory part stores the answering time from a time when a question is presented on the presentation device to a time when the answer is inputted into the input device for each of the plurality of questions. The evaluating arithmetic part calculates an evaluation value on the intellectual productivity of the test subject during a measurement period of measuring the answering time of each of the plurality of questions by extracting a feature amount from the set of the answering time stored in the work memory part.

Abstract: A biological signal measurement system includes: a biological signal measurer that measures a biological signal including external noise of biological noise and of environmental noise; biological noise measurer that measures a signal including the biological noise; a biological noise estimator that estimates the biological noise from the signal measured by the biological noise measurer; an environmental noise measurer that measures a signal including the environmental noise; an environmental noise estimator that estimates the environmental noise from the signal measured by the environmental noise measurer; and a calculator that calculates the biological signal in consideration of an effect of the external noise using the signal measured by the biological signal measurer, the biological noise estimated by the biological noise estimator and the environmental noise estimated by the environmental noise estimator.

Abstract: A presentation device is configured to present a plurality of recognition objects to a test subject. An input device is configured to allow the test subject input an answer of a work problem as a mental work to each recognition object. The evaluation device includes a work memory part configured to store, as work information, an answering time from a time when a recognition object is presented on the presentation device to a time when the answer is inputted into the input device. Also, the evaluation device includes an evaluating arithmetic part configured to calculate an evaluation value of a concentration ratio of the test subject using a statistics value of the work information stored in the work memory part while the plurality of recognition objects are presented on the presentation device.

Abstract: An intellectual-productivity analysis apparatus includes a presentation device, an input device, and an evaluation device. The presentation device presents a plurality of questions to a test subject. The input device allows the test subject input an answer to each question. The evaluation device includes a work memory part and an evaluating arithmetic part. The work memory part stores the answering time from a time when a question is presented on the presentation device to a time when the answer is inputted into the input device for each of the plurality of questions. The evaluating arithmetic part calculates an evaluation value on the intellectual productivity of the test subject during a measurement period of measuring the answering time of each of the plurality of questions by extracting a feature amount from the set of the answering time stored in the work memory part.