The invention discloses a closed-loop feedback target extraction method based on a frontal top electroencephalogram
network activity reference model, and relates to the fields of neural information decoding,
neuroscience application and brain-computer interfaces. According to the method, the problem of insufficient target selection and
feedback regulation and control precision in traditional electroencephalogram closed-loop feedback is solved, and a new electroencephalogram network target extraction mode which is good in ecological property and high in robustness is provided. The method mainly comprises the steps that firstly, a
brain network path closely related to memory cognitive function abnormity of mild
cognitive impairment (MCI) is extracted in a natural film watching state, network characteristics are refined in combination with metabolic map information, a new
brain network target fed back by a real-time electroencephalogram
closed loop is formed, and the ecological property of the target and the pertinence of feedback are remarkably improved. Besides, based on a large amount of normal elderly group electroencephalogram data, a frontal top electroencephalogram
network activity reference model of the normal elderly group in a movie recalling state is constructed, key feedback indexes are extracted by using a
machine learning
algorithm, real-time evaluation of the relative performance level of MCI individuals is realized, and the accuracy of evaluation is improved. And a
technical support is provided for improving the cognitive function of the MCI patient.