Knowledge discovery based on brainwave response to external stimulation
First Claim
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1. A method comprising:
- exposing, via a presentation device, a subject to a first sequence of stimuli;
detecting, by a processor, a first brainwave response of the subject to at least one stimulus of the first sequence of stimuli;
determining, by the processor, an existence of a correlation between the first brainwave response and a knowledge category, the knowledge category being represented in the first sequence of stimuli, the knowledge category being a first node of a hierarchical tree structure for categories of knowledge;
selecting, by the processor after a determination of the existence of the correlation, a second sequence of stimuli, the second sequence of stimuli related to the knowledge category;
exposing, via the presentation device, the subject to the second sequence of stimuli;
detecting, by the processor, a second brainwave response of the subject to at least one stimulus of the second sequence of stimuli; and
determining, by the processor, an existence of a correlation between the second brainwave response and a sub-category of the knowledge category, the sub-category being represented in the second sequence of stimuli, the sub-category being a second node of the hierarchical tree structure for the categories of knowledge.
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Abstract
Techniques are disclosed for detecting knowledge based on brainwave response to external stimulation. A subject can be exposed to stimuli and brainwave responses indicating a p-300 signal can be detected. Further stimuli or sequences of stimuli can be selected be presented to the subject based on the category correlated with the stimuli that indicate a p-300 response.
29 Citations
30 Claims
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1. A method comprising:
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exposing, via a presentation device, a subject to a first sequence of stimuli; detecting, by a processor, a first brainwave response of the subject to at least one stimulus of the first sequence of stimuli; determining, by the processor, an existence of a correlation between the first brainwave response and a knowledge category, the knowledge category being represented in the first sequence of stimuli, the knowledge category being a first node of a hierarchical tree structure for categories of knowledge; selecting, by the processor after a determination of the existence of the correlation, a second sequence of stimuli, the second sequence of stimuli related to the knowledge category; exposing, via the presentation device, the subject to the second sequence of stimuli; detecting, by the processor, a second brainwave response of the subject to at least one stimulus of the second sequence of stimuli; and determining, by the processor, an existence of a correlation between the second brainwave response and a sub-category of the knowledge category, the sub-category being represented in the second sequence of stimuli, the sub-category being a second node of the hierarchical tree structure for the categories of knowledge. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A system comprising:
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at least one sensor; a presentation device; and a processor in communication with the presentation device and the at least one sensor and configured to; send a first sequence of stimuli to the presentation device, receive a first signal from the at least one sensor based upon a first brainwave response of a subject to at least one stimulus of the first sequence of stimuli, determine an existence of a correlation between the first brainwave response and a knowledge category, the knowledge category being represented in the first sequence of stimuli, the knowledge category being a first node of a hierarchical tree structure for categories of knowledge, select, after a determination of the existence of the correlation, a second sequence of stimuli, the second sequence of stimuli related to the knowledge category; send a second sequence of stimuli to the presentation device, receive a second signal from the at least one sensor based on a second brainwave response of the subject to at least one stimulus of the second sequence of stimuli, determine an existence of a correlation between the second brainwave response and a sub-category of the knowledge category, the sub-category being represented in the second sequence of stimuli, the sub-category being a second node of the hierarchical tree structure for the categories of knowledge. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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29. A method comprising:
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exposing, via a presentation device, a subject to a first sequence of stimuli, at least one stimulus of the first sequence of stimuli correlated with a category defining an occupation; detecting, by a processor, a brainwave response of the subject to the at least one stimulus of the first sequence of stimuli; correlating, by the processor, the brainwave response to a target category, the target category being the occupation, wherein an interest of the subject in the occupation is previously unknown to the subject; characterizing, by the processor, a set of potential stimuli, at least one of the potential stimuli characterized as a potential target stimulus, the potential target stimulus defined as being related to the target category and of interest to the subject, the at least one of the potential stimuli characterized as a potential non-target stimulus, the potential non-target stimulus defined as being related to the target category but of less or no interest to the subject, the potential target stimulus correlated with a sub-category of the target category, the target category having at least three sub-categories, the sub-categories further defining more specific occupations, the characterizing based upon an existence of a correlation between the brainwave response and the target category, the characterizing performed for each potential stimulus in the set of potential stimuli; and generating, by the processor and from the set of potential stimuli, a second sequence of stimuli.
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30. A system comprising:
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at least one sensor, a presentation device; and a processor in communication with the presentation device and the at least one sensor and configured to; send at least one stimulus, of a first sequence of stimuli correlated with a category defining an occupation, to the presentation device, receive a signal from the at least one sensor based upon a brainwave response of a subject to the at least one stimulus, correlate the brainwave response to a target category, the target category being the occupation, wherein an interest of the subject in the occupation is previously unknown to the subject, characterize a set of potential stimuli, at least one of the potential stimuli characterized as a potential target stimulus, the potential target stimulus defined as being related to the target category and of interest to the subject, the at least one of the potential stimuli characterized as a potential non-target stimulus, the potential non-target stimulus defined as being related to the target category but of less or no interest to the subject, the potential target stimulus correlated with a sub-category of the target category, the target category having at least three sub-categories, the sub-categories further defining more specific occupations, and perform, for each potential stimulus in the set of potential stimuli, a characterization based upon an existence of a correlation between the brainwave response and the target category, and generate, from the set of potential stimuli, a second sequence of stimuli.
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Specification