Patent ID: 8562525
Filing Date: 2013-10-22
Classification: A61B

Abstract:
1. A biological signal processing apparatus comprising: an obtaining unit that obtains a spectrum of a biological signal that has been observed; a generation unit that generates a three-dimensional waveform by plotting elements of the spectrum obtained by the obtaining unit in a space defined by a time axis, a frequency axis, and an intensity axis; and a detection unit that detects a specified waveform component using a position along the intensity axis at which a cross-section of the three-dimensional waveform in a time-frequency domain generated by the generation unit is to be observed, and uses a state of the cross-section at the position as criteria for recognition of the specified waveform component, wherein the state of the cross-section includes at least one of a width of the cross-section along the frequency axis, a center of gravity of the cross-section, and an area of the cross-section.