Positioning method and system based on electroencephalogram signals

• Main Authors: SUN YU, WANG SUJIE, FENG ZHAO
• Format: Patent
• Language: Chinese; English
• Published: 28.06.2024
• Subjects: CALCULATING; COMPUTER SYSTEMS BASED ON SPECIFIC COMPUTATIONAL MODELS; COMPUTING; COUNTING; DIAGNOSIS; ELECTRIC DIGITAL DATA PROCESSING; HUMAN NECESSITIES; HYGIENE; IDENTIFICATION; MEDICAL OR VETERINARY SCIENCE; PHYSICS; SURGERY

The embodiment of the invention discloses a positioning method and system based on electroencephalogram signals, and the method comprises the steps: responding to the electroencephalogram signals obtained after nerve stimulation, and converting the electroencephalogram signals into a linear equation of a preset source imaging model; the linear equation of the source imaging model comprises a relation matrix of brain power supply activity mapped from the cerebral cortex to a scalp surface acquisition electrode, a time domain basis function of the electroencephalogram signal, and a weighting coefficient of the time domain basis function of each source dipole; representing a linear equation of the source imaging model as a probability distribution form, and applying a prior probability to the source imaging model in the probability distribution form according to a Bayesian method; performing posterior estimation on the source imaging model after the prior probability is applied, and iteratively updating a time-d