periods.In the model for critical periods, the hypothesis is that the best brain plasticity so far affects current brain plasticity and the best synapse formation so far affects current synapse formation.Furthermore, PNN takes into account the mnemonic gradient informational synapse formation, and brain plasticity and synapse formation change frame of NN is a new method of Deep Learning.The question we proposed is whether the promotion of neuroscience and brain cognition was achieved by model construction, formula derivation or algorithm testing. We resorted to the Artificial Neural Network (ANN), evolutionary computation and other numerical methods for hypotheses, possible explanations and rules, rather than only biological tests which include cutting-edge imaging and genetic tools.And it has no ethics of animal testing.
Based on the RNN frame, we accomplished the model construction, formula derivation and algorithm testing for PNN. We elucidated the mechanism of PNN based on the latest MIT research on synaptic compensation, and also grounded our study on the basis of findings of the Stanford research, which suggested that synapse formation is important for competition in dendrite morphogenesis. The influence of astrocytic impacts on brain plasticity and synapse formation is an important mechanism of our Neural Network at critical periods or the end of critical