Knowledge discovery based on brainwave response to external stimulation

A method for obtaining information of at least one of knowledge, interest or experience of a subject for a specific category of knowledge, the method comprising:

• receiving, by a processor, a first signal, wherein the first signal represents a first psychophysiological response of the subject to a first stimulus;
• determining, by the processor, a first correlation between the first psychophysiological response and a knowledge, interest or experience category, wherein the knowledge, interest or experience category is a first node of a hierarchical tree structure for categories of knowledge;
• based on determining the first correlation between the first psychophysiological response and the knowledge, interest or experience category, selecting for presentation to the subject, a second stimulus;
• receiving, by the processor, a second signal, wherein the second signal represents a second psychophysiological response of the subject to the second stimulus;
• determining, by the processor, a second correlation between the second psychophysiological response and a sub-category of the knowledge, interest or experience category, wherein the sub-category is a second node representing the specific category of knowledge of the hierarchical tree structure for the categories of knowledge;
• and
• obtaining information of at least one of knowledge, interest or experience of the subject based on the determined second correlation between the second psychophysiological response and the sub-category of the knowledge, interest or experience category.

A non-transitory computer-readable medium storing computer code for execution by a processor for obtaining information of at least one of knowledge, interest or experience of a subject for a specific category of knowledge, the computer code including instructions to cause the processor to:

• receive a first signal, wherein the first signal represents a first psychophysiological response of the subject to a first stimulus;
• determine a first correlation between the first psychophysiological response and a knowledge, interest or experience category, wherein the knowledge, interest or experience category is a first node of a hierarchical tree structure for categories of knowledge;
• based on determining the first correlation between the first psychophysiological response and the knowledge, interest or experience category, selecting for presentation to the subject, a second stimulus;
• receive, after a determination of the first correlation, a second signal, wherein the second signal represents a second psychophysiological response of the subject to the second stimulus;
• determine a second correlation between the second psychophysiological response and a sub-category of the knowledge, interest or experience category, wherein the sub-category is a second node representing the specific category of knowledge of the hierarchical tree structure for the categories of knowledge;
• and
• obtain information of at least one of knowledge, interest or experience of the subject based on the determined second correlation between the second psychophysiological response and the sub-category of the knowledge, interest or experience category.

A system for obtaining information of at least one of knowledge, interest or experience of a subject for a specific category of knowledge, the system comprising:

• a memory configured to store a first signal and a second signal;
• and
• a processor configured to:
• receive the first signal, wherein the first signal represents a first psychophysiological response of the subject to a first stimulus;
• determine a first correlation between the first psychophysiological response and a knowledge, interest or experience category, wherein the knowledge, interest or experience category is a first node of a hierarchical tree structure for categories of knowledge;
• based on determining the first correlation between the first psychophysiological response and the knowledge, interest or experience category, selecting for presentation to the subject, a second stimulus;
• receive, after a determination of the first correlation, the second signal, wherein the second signal represents a second psychophysiological response of the subject to the second stimulus;
• determine a second correlation between the second psychophysiological response and a subcategory of the knowledge, interest or experience category, wherein the sub-category is a second node representing the specific category of knowledge of the hierarchical tree structure for the categories of knowledge;
• and
• obtain information of at least one of knowledge, interest or experience of the subject based on the determined second correlation between the second psychophysiological response and the sub-category of the knowledge, interest or experience category.