The invention discloses a multi-scale quantitative analysis method of an electroencephalogram signal. The multi-scale quantitative analysis method comprises adopting a multi-channel digital electroencephalograph and a 16-bit A / D acquisition card; collecting different lead digital electroencephalograms and computerizing a collected raw electroencephalogram data; and setting a sampling frequency and analyzing the length of the data according to an analysis content; performing continuous wavelet transforms to the analyzed raw electroencephalogram data; decomposing a total signal energy accordance with a scale according to a multi-scale wavelet coefficient to reach that the sum of the energy occupied by each scale signal is equal to the total energy of the signal. The multi-scale quantitative analysis method of a wavelet analysis is applied to quantitative analysis of EEG, so seemingly complex disorder of the electroencephalogram signal can be decomposed on different scales, and the accurate expression of electroencephalogram signal at each scale is achieved. So that EEG technology in clinical diagnosis and basic research plays a greater role.
Multi-scale quantitative analysis method of electroencephalogram signal