SLEEP STAGE ESTIMATION DEVICE, BIOLOGICAL DATA ESTIMATION DEVICE, SLEEP STAGE ESTIMATION METHOD, BIOLOGICAL DATA ESTIMATION METHOD, SLEEP STAGE ESTIMATION PROGRAM, AND BIOLOGICAL DATA ESTIMATION PROGRAM

摘要

The present invention makes it possible to estimate a sleep stage at a time for which there is no data present. The present invention is provided with: an acquiring means for acquiring biological data indicating a heartbeat wave; a parameter estimation means for estimating, for a numerical expression in which an intermediate-frequency component of the heartbeat wave is defined using a parameter, the parameter using the biological data; and a sleep stage estimation means for estimating a sleep stage from the value of the intermediate-frequency component at an arbitrary time on the basis of the numerical expression, the estimated parameter being applied to the numerical expression.