Time-varying brain network reconstruction method facing dynamic video target detection

Abstract

The invention belongs to the technical field of electroencephalogram recognition, and particularly relates to a time-varying brain network reconstruction method facing dynamic video target detection. The method comprises the following steps that a scalp electroencephalogram signal of a testee under an acquired dynamic video is mapped to a cortex space, and a cortex signal with high temporal-spatial resolution is reconstructed; and an interested brain area is selected from the cortex space to serve as a network analysis node, and a cortex time-varying brain network connection graph reflecting the cognitive processing process is obtained by analyzing the neural information processing process from target search to target discovery according to cortex signal. According to the method, a neural processing mechanism of the process from search to discovery of a dynamic visual target is expanded, scalp electroencephalogram with the high temporal-spatial resolution is selected to be mapped into cortex electroencephalogram with the high temporal-spatial resolution, a finer brain activity diagram can be obtained, the brain neural information processing process is further explored through a time-varying network analysis method, the application of a brain-computer interface in an actual environment is facilitated, and the application prospect is good.

Description

technical field [0001] The invention belongs to the technical field of electroencephalogram recognition, in particular to a time-varying brain network reconstruction method for dynamic video target detection. Background technique [0002] Rapid detection of events of interest from complex visual scenes is an essential survival skill. However, it is not easy for patients with neurological and psychiatric diseases with cognitive impairment. Cognitive neuroscience calls this cognitive process object detection, and its important position in daily life highlights the importance of studying the neural mechanism of this core cognitive process. Exploring the neural information processing mechanism of the human brain on the events of concern will provide more comprehensive theoretical guidance for human beings to further explore neuroscience, and provide answers to important questions such as "the cooperation mechanism of multiple brain regions in complex thinking activities" and "t...

AI Technical Summary

Problems solved by technology

Different from image object detection, the time when dynamic visual objects appear is unknown, so the detection process of such visual objects is more complicated. Although the existing research on the neural mechanism of image object detection has made some progress, however, the objects in dynamic scenes cannot be searched for. There is still a lack of relevant research and analysis on the complete cognitive processing process that has been discovered.

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