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In the nervous system, dendrites, branches of neurons that transmit signals between synapses and soma, play a critical role in processing functions, such as nonlinear integration of postsynaptic signals. The lack of these critical functions in artificial neural networks compromises their performance, for example in terms of flexibility, energy efficiency and the ability to handle complex tasks. Here, by developing artificial dendrites, we experimentally demonstrate a complete neural network fully integrated with synapses, dendrites and soma, implemented using scalable memristor devices. We perform a digit recognition task and simulate a multilayer network using experimentally derived device characteristics. The power consumption is more than three orders of magnitude lower than that of a central processing unit and 70 times lower than that of a typical application-specific integrated circuit chip. This network, equipped with functional dendrites, shows the potential of substantial overall performance improvement, for example by extracting critical information from a noisy background with significantly reduced power consumption and enhanced accuracy.


Xinyi Li, Jianshi Tang, Qingtian Zhang, Bin Gao, J Joshua Yang, Sen Song, Wei Wu, Wenqiang Zhang, Peng Yao, Ning Deng, Lei Deng, Yuan Xie, He Qian, Huaqiang Wu. Power-efficient neural network with artificial dendrites. Nature nanotechnology. 2020 Sep;15(9):776-782

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PMID: 32601451

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