APPARATUS, METHOD, AND COMPUTER PROGRAM FOR ADJUSTMENT OF ELECTROENCEPHALOGRAMS DISTINCTION METHOD
First Claim
1. An adjustment apparatus used for adjusting a distinction method in an electroencephalogram interface section in an electroencephalogram interface system, the electroencephalogram interface system including:
- an output section for, based on data of a content, presenting the content to a user;
a biological signal measurement section for acquiring an electroencephalogram signal from the user; and
the electroencephalogram interface section for distinguishing a request of the user based on the electroencephalogram signal and identifying a function which is in accordance with the request,wherein the apparatus comprises;
an analysis section for measuring and analyzing a physical quantity corresponding to a visual and/or auditory stimulation given to the user, the physical quantity being measured and analyzed as a characteristic quantity of the stimulation, and for detecting a change in the characteristic quantity of the stimulation that affects an event-related potential contained in the electroencephalogram signal, thus detecting a change in the stimulation;
a storage section for storing a waveform of the event-related potential during a predetermined period at least spanning after a starting point which is a point in time when the change in the stimulation is detected;
a user characteristic extraction section for extracting a characteristic quantity of the user based on the stored waveform of the event-related potential; and
a distinction method adjustment section for, based on the extracted characteristic quantity of the user, adjusting in the electroencephalogram interface section the distinction method for a request based on the electroencephalogram signal.
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Accused Products
Abstract
In a system having an interface utilizing electroencephalograms, a user'"'"'s burden of calibration for accurately measuring electroencephalograms is eliminated, and it becomes possible to maintain a high distinction accuracy of electroencephalograms.
An electroencephalogram interface (IF) system 1 includes an electroencephalogram IF section (13) for distinguishing a request of a user based on electroencephalograms, and identifies a function which is in accordance with the request. An electroencephalogram distinction method adjustment apparatus (2, 50) includes: an analysis section (14, 52) for detecting a change in a characteristic quantity of a stimulation given to the user, thus detecting a change in the stimulation; a storage section (15) for storing a waveform of an event-related potential during a period after a point in time when the change in the stimulation is detected; an extraction section (16) for extracting a characteristic quantity of the user based on the stored waveform; and an adjustment section (17) for, based on the extracted characteristic quantity, adjusting in the electroencephalogram IF section (13) a distinction method for a request based on an electroencephalogram signal.
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Citations
15 Claims
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1. An adjustment apparatus used for adjusting a distinction method in an electroencephalogram interface section in an electroencephalogram interface system, the electroencephalogram interface system including:
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an output section for, based on data of a content, presenting the content to a user; a biological signal measurement section for acquiring an electroencephalogram signal from the user; and the electroencephalogram interface section for distinguishing a request of the user based on the electroencephalogram signal and identifying a function which is in accordance with the request, wherein the apparatus comprises; an analysis section for measuring and analyzing a physical quantity corresponding to a visual and/or auditory stimulation given to the user, the physical quantity being measured and analyzed as a characteristic quantity of the stimulation, and for detecting a change in the characteristic quantity of the stimulation that affects an event-related potential contained in the electroencephalogram signal, thus detecting a change in the stimulation; a storage section for storing a waveform of the event-related potential during a predetermined period at least spanning after a starting point which is a point in time when the change in the stimulation is detected; a user characteristic extraction section for extracting a characteristic quantity of the user based on the stored waveform of the event-related potential; and a distinction method adjustment section for, based on the extracted characteristic quantity of the user, adjusting in the electroencephalogram interface section the distinction method for a request based on the electroencephalogram signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method used for adjusting a distinction method in an electroencephalogram interface section in an electroencephalogram interface system, the electroencephalogram interface system including:
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an output section for, based on data of a content, presenting the content to a user; a biological signal measurement section for acquiring an electroencephalogram signal from the user; and the electroencephalogram interface section for distinguishing a request of the user based on the electroencephalogram signal and identifying a function which is in accordance with the request, wherein the method comprises the steps of; measuring a physical quantity corresponding to a visual and/or auditory stimulation given to the user, the physical quantity being measured as a characteristic quantity of the stimulation; detecting a change in the characteristic quantity of the stimulation that affects an event-related potential contained in the electroencephalogram signal, thus detecting a change in the stimulation; storing a waveform of the event-related potential during a predetermined period at least spanning after a starting point which is a point in time when the change in the stimulation is detected; extracting a characteristic quantity of the user based on the stored waveform of the event-related potential; and based on the extracted characteristic quantity of the user, adjusting in the electroencephalogram interface section the distinction method for a request based on the electroencephalogram signal.
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15. A computer program to be executed by a computer implemented in an electroencephalogram distinction method adjustment apparatus used for adjusting a distinction method in an electroencephalogram interface section in an electroencephalogram interface system, the electroencephalogram interface system including:
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an output section for, based on data of a content, presenting the content to a user; a biological signal measurement section for acquiring an electroencephalogram signal from the user; and the electroencephalogram interface section for distinguishing a request of the user based on the electroencephalogram signal and identifying a function which is in accordance with the request, wherein the computer program causes the computer to execute the steps of; measuring a physical quantity corresponding to a visual and/or auditory stimulation given to the user, the physical quantity being measured as a characteristic quantity of the stimulation; detecting a change in the characteristic quantity of the stimulation that affects an event-related potential contained in the electroencephalogram signal, thus detecting a change in the stimulation; storing a waveform of the event-related potential during a predetermined period at least spanning after a starting point which is a point in time when the change in the stimulation is detected; extracting a characteristic quantity of the user based on the stored waveform of the event-related potential; and based on the extracted characteristic quantity of the user, adjusting in the electroencephalogram interface section the distinction method for a request based on the electroencephalogram signal.
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Specification