US 11,678,833 B2
Brain activity feature amount extraction method
Satoshi Yomota, Kyoto (JP); Shin Nakamura, Kyoto (JP); Kenta Chinomi, Kyoto (JP); and Nobuyuki Akinaga, Kyoto (JP)
Assigned to Shimadzu Corporation, Kyoto (JP)
Filed by Shimadzu Corporation, Kyoto (JP)
Filed on Feb. 4, 2020, as Appl. No. 16/781,174.
Claims priority of application No. JP2019-029663 (JP), filed on Feb. 21, 2019.
Prior Publication US 2020/0268305 A1, Aug. 27, 2020
Int. Cl. A61B 5/00 (2006.01); A61B 5/026 (2006.01); A61B 5/16 (2006.01); G16H 40/63 (2018.01)
CPC A61B 5/4064 (2013.01) [A61B 5/0261 (2013.01); A61B 5/16 (2013.01); A61B 5/6803 (2013.01); A61B 5/7278 (2013.01); A61B 5/7425 (2013.01); G16H 40/63 (2018.01); A61B 2503/12 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A brain activity feature amount extraction method, comprising:
giving, displayed on a display device, an assignment for triggering brain activity to a subject including a group of healthy persons and a group of non-healthy persons;
measuring a change in a cerebral blood flow rate for each measurement region of the subject when the assignment is given to the subject;
acquiring a feature amount relating to the change in the cerebral blood flow rate;
calculating an index value serving as an index indicating effectiveness or non-effectiveness for discriminating the group of healthy persons and the group of non-healthy persons from each other with respect to each combination of the assignment, the measurement region, and the feature amount that the each combination includes the assignment, the measurement region, and the feature amount;
acquiring a plurality of data items in which the set of the assignment, the measurement region, and the feature amount is associated with the calculated index value;
acquiring a combination of the plurality of data items in order of higher effectiveness for discriminating whether the subject is a healthy person or a non-healthy person, among the plurality of data items on a basis of the calculated index value; and
displaying, on the display device to the subject, the combination of the plurality of acquired data items in order of higher effectiveness.