Brain activity analyzer, brain activity analysis method, and brain activity analysis program

摘要

PROBLEM TO BE SOLVED: To provide a brain activity analysis device capable of identifying an object category from a brain activity signal which is measured during a period when a subject is looking at an object image containing an object which is not used in training of a decoder, or when a subject imagines such an object image.SOLUTION: A brain activity analysis device comprises: a feature vector extraction part 3016 for extracting a vision feature vector about plural pieces of reference image data stored in a general purpose image database 4000; a feature vector prediction part 3014 for generating an estimated vision feature vector which is estimated based on a brain activity pattern of the subject; and an identification processing part 3020 for identifying an object category corresponding to the brain activity pattern which occurs in a prescribed region in a brain of the subject, based on a degree of correlation between the extracted vision feature vector and the estimated vision feature vector.SELECTED DRAWING: Figure 3