This invention discloses a method and
system for early
autism screening based on fNIRS and action feature bimodal fusion, comprising a neural
signal acquisition module, a behavioral video acquisition module, a
brain network analysis unit, an action analysis unit, and a multimodal fusion
decision unit. The
brain network analysis unit constructs a dynamic brain
functional connectivity map and introduces a graph
attention network to automatically learn the importance of key brain regions and their connections. The action analysis unit uses the AlphaPose
algorithm to extract key point sequences of the
human body and combines bidirectional long short-
term memory networks to model action temporal dependencies. The multimodal fusion
decision unit employs an attention-based decision-
level fusion mechanism, adaptively weighting the classification probabilities of the two branches. This invention achieves multidimensional information complementarity and intelligent fusion for
autism by fusing brain signals and behavioral action features, exhibiting strong screening objectivity, high
interpretability, and excellent classification accuracy, providing an efficient and automated solution for early
autism screening in primary healthcare settings.