ADJUSTMENT DEVICE, METHOD, AND COMPUTER PROGRAM FOR A BRAINWAVE IDENTIFICATION SYSTEM
First Claim
1. In an electroencephalogram interface system havingan output section for visually presenting a manipulation menu for a device,a biological signal measurement section for acquiring an electroencephalogram signal from a user, andan electroencephalogram interface section for presenting via the output section a plurality of menu items of the manipulation menu in a regular order, distinguishing by a previously determined distinction method a component of an event-related potential which is contained in the electroencephalogram signal after each menu item is highlighted, and operating the device based on the distinguished event-related potential,an apparatus used for adjusting the distinction method in the electroencephalogram interface section, whereinthe distinction method is a method of distinguishing the component of the event-related potential depending on whether the electroencephalogram signal satisfies a predetermined criterion or not, the adjustment apparatus for the electroencephalogram distinction method comprising:
- an analysis section for determining a gradient of a waveform of the event-related potential before the menu item is highlighted; and
a determination section for comparing the gradient of the waveform as determined by the analysis section against a threshold value, and determining that the menu item corresponding to the gradient is a menu item which the user wishes to select based on a result of comparison.
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Abstract
In a system having an interface which utilizes an electroencephalogram, device operations which are not intended by the user are reduced.
An adjustment apparatus for an electroencephalogram distinction method is used for an electroencephalogram interface system. The system has a biological signal measurement section for acquiring an electroencephalogram signal from a user, and an electroencephalogram interface section for presenting via an output section a plurality of menu items of the manipulation menu in a regular order, distinguishing by a previously determined distinction method a component of an event-related potential which is contained in the electroencephalogram signal after each menu item is highlighted, and operating a device based on the distinguished event-related potential. The adjustment apparatus includes: an analysis section for determining a gradient of a waveform of the event-related potential before the menu item is highlighted; and a determination section for comparing the gradient of the waveform as determined by the analysis section against a threshold value, and determining that the menu item corresponding to the gradient is a menu item which the user wishes to select based on a result of comparison.
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Citations
9 Claims
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1. In an electroencephalogram interface system having
an output section for visually presenting a manipulation menu for a device, a biological signal measurement section for acquiring an electroencephalogram signal from a user, and an electroencephalogram interface section for presenting via the output section a plurality of menu items of the manipulation menu in a regular order, distinguishing by a previously determined distinction method a component of an event-related potential which is contained in the electroencephalogram signal after each menu item is highlighted, and operating the device based on the distinguished event-related potential, an apparatus used for adjusting the distinction method in the electroencephalogram interface section, wherein the distinction method is a method of distinguishing the component of the event-related potential depending on whether the electroencephalogram signal satisfies a predetermined criterion or not, the adjustment apparatus for the electroencephalogram distinction method comprising: -
an analysis section for determining a gradient of a waveform of the event-related potential before the menu item is highlighted; and a determination section for comparing the gradient of the waveform as determined by the analysis section against a threshold value, and determining that the menu item corresponding to the gradient is a menu item which the user wishes to select based on a result of comparison. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. In an electroencephalogram interface system having
an output section for visually presenting a manipulation menu for a device, a biological signal measurement section for acquiring an electroencephalogram signal from a user, and an electroencephalogram interface section for presenting via the output section a plurality of menu items of the manipulation menu in a regular order, distinguishing by a previously determined distinction method a component of an event-related potential which is contained in the electroencephalogram signal after each menu item is highlighted, and operating the device based on the distinguished event-related potential, a method used for adjusting the distinction method in the electroencephalogram interface section, wherein the distinction method is a method of distinguishing the component of the event-related potential depending on whether the electroencephalogram signal satisfies a predetermined criterion or not, the adjustment method comprising the steps of: -
determining a gradient of a waveform of the event-related potential before the menu item is highlighted; and comparing the gradient of the waveform as determined by the step of determining a gradient against a threshold value, and determining that the menu item corresponding to the gradient is a menu item which the user wishes to select based on a result of comparison.
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9. In an electroencephalogram interface system having
an output section for visually presenting a manipulation menu for a device, a biological signal measurement section for acquiring an electroencephalogram signal from a user, and an electroencephalogram interface section for presenting via the output section a plurality of menu items of the manipulation menu in a regular order, distinguishing by a previously determined distinction method a component of an event-related potential which is contained in the electroencephalogram signal after each menu item is highlighted, and operating the device based on the distinguished event-related potential, a computer program used for adjusting the distinction method in the electroencephalogram interface section, wherein the distinction method is a method of distinguishing the component of the event-related potential depending on whether the electroencephalogram signal satisfies a predetermined criterion or not, the computer program causing a computer which is provided in the electroencephalogram interface system to execute the steps of: -
determining a gradient of a waveform of the event-related potential before the menu item is highlighted; and comparing the gradient of the waveform as determined by the step of determining a gradient against a threshold value, and determining that the menu item corresponding to the gradient is a menu item which the user wishes to select based on a result of comparison.
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Specification