Signal phase-amplitude coupling strength measurement method and device based on Omega complexity

• Main Authors: BAI XIAOCHEN, CUI GUANGZHI, MA JUN, SHEN MAODONG, HE FANG, LI XINQI
• Format: Patent
• Language: Chinese; English
• Published: 09.02.2024
• Subjects: BASIC ELECTRONIC CIRCUITRY; DIAGNOSIS; ELECTRICITY; HUMAN NECESSITIES; HYGIENE; IDENTIFICATION; IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; MEDICAL OR VETERINARY SCIENCE; RESONATORS; SURGERY

The invention relates to a signal phase-amplitude coupling strength measurement method and device based on Omega complexity, and the method comprises the steps: obtaining the instantaneous phase of a narrowband low-frequency signal and the instantaneous amplitude of a narrowband high-frequency signal in an electroencephalogram original signal, and respectively forming the time sequences of the instantaneous phase and amplitude values; dividing the time sequence of the phase instantaneous value and the amplitude instantaneous value into equal-length time windows; dividing the time sequence of the amplitude instantaneous values into a plurality of amplitude distribution sequences with equal length according to the phase distribution of the phase instantaneous values in each time window; according to the amplitude distribution sequences, constructing a correlation matrix for measuring the similarity between the amplitude distribution sequences corresponding to different phase segments; and performing Omega-compl