CATEGORIZING PERCEPTUAL STIMULI BY DETECTING SUBCONCIOUS RESPONSES
First Claim
1. A computer-implemented process for identifying a stimuli category of a perceptual stimulus that has been presented to one or more people whose brain activity is being monitored, comprising using a computer to perform the following process actions for each person:
- training a detection module to recognize the part of the brain activity generated in response to a presentation of a stimulus belonging to each of one or more categories of perceptual stimuli using the monitored brain activity;
once the detection module is trained, detecting a subsequent instance or instances of a stimulus belonging to a trained stimuli category being presented to the person based on the monitored brain activity;
identifying the trained stimuli category that the presented stimulus belongs to; and
designating that the presented stimulus belongs to the identified trained stimuli category.
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Abstract
A perceptual stimulus categorization technique is presented which identifies the stimuli category of a perceptual stimulus that has been presented to a person whose brain activity is being monitored. This generally accomplished by first training a detection module to recognize the part of the brain activity generated in response to the presentation of a stimulus belonging to each of one or more stimuli categories using brain activity information. Once the detection module is trained, a subsequent instance of a stimulus belonging to a trained stimuli category being presented to the person is detected, and this detection is used to identify the trained stimuli category to which the presented stimulus belongs.
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Citations
20 Claims
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1. A computer-implemented process for identifying a stimuli category of a perceptual stimulus that has been presented to one or more people whose brain activity is being monitored, comprising using a computer to perform the following process actions for each person:
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training a detection module to recognize the part of the brain activity generated in response to a presentation of a stimulus belonging to each of one or more categories of perceptual stimuli using the monitored brain activity; once the detection module is trained, detecting a subsequent instance or instances of a stimulus belonging to a trained stimuli category being presented to the person based on the monitored brain activity; identifying the trained stimuli category that the presented stimulus belongs to; and designating that the presented stimulus belongs to the identified trained stimuli category.
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2. A computer-implemented process for identifying a stimuli category of a perceptual stimulus that has been presented to one or more people whose brain activity is being monitored, comprising using a computer to perform the following process actions for each person:
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prior to presenting the stimulus to the person, presenting to the person, at least once, a training stimulus belonging to each of one or more stimuli categories of interest, inputting signals from a brain activity sensing device captured during a time the training stimulus was presented and beyond, wherein the signals exhibit different distinguishing characteristics whenever a stimulus belonging to a different one of the one or more stimuli categories is presented to the person, and wherein the distinguishing characteristics are indicative of an involuntary, subconscious response of the brain of the person to the stimulus, and employing the inputted signals to train a detection module to recognize the respective distinguishing characteristics associated with each of the stimuli categories of interest; and once the detection module is trained, presenting a stimulus belonging to a trained stimuli category to the person, inputting signals from the brain activity sensing device captured during a time the stimulus was presented and beyond, using the detection module to determine if distinguishing characteristics associated with a stimulus belonging to one of the trained stimuli categories are present in the inputted signal, and outputting an indicator identifying the trained stimuli category that the stimulus belongs to, whenever it is determined distinguishing characteristics associated with a stimulus belonging to one of the trained stimuli categories are present in the inputted signal. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A computer-implemented process for identifying a stimuli category of a perceptual stimulus that has been presented to a person whose brain activity is being monitored, comprising using a computer to perform the following process actions:
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in a training phase, presenting to the person, at least once, a training stimulus belonging to each of one or more stimuli categories of interest, inputting signals from a brain activity sensing device, wherein the signals exhibit different distinguishing characteristics whenever a stimulus belonging to a different one of the one or more stimuli categories is presented to the person, and wherein the distinguishing characteristics are indicative of an involuntary, subconscious response of the brain of the person to the stimulus, and employing the inputted signals to train a detection module to recognize the respective distinguishing characteristics associated with each of the stimuli categories of interest; and in a detection phase, presenting a stimulus belonging to a trained stimuli category to the person a prescribed number of times, inputting signals from the brain activity sensing device captured during a period encompassing the time the stimulus is repeatedly presented to the person and beyond, using the detection module to identify each time distinguishing characteristics associated with a stimulus belonging to one of the trained stimuli categories are present in the inputted signals and capturing the results of the identifying, determining which of the one or more trained stimuli categories the presented stimulus belongs to based on the captured results, and outputting an indicator identifying the trained stimuli category that the presented stimulus belongs to. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification