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Electronic neuromorphic system, synaptic circuit with resistive switching memory and method of performing spike-timing dependent plasticity
Electronic neuromorphic system, synaptic circuit with resistive switching memory and method of performing spike-timing dependent plasticity
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机译:电子神经形态系统,具有电阻性开关记忆的突触电路和执行依赖于尖峰时序的可塑性的方法
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摘要
A synaptic circuit performing spike-timing dependent plasticity STDP interposed between a pre-synaptic neuron and a post-synapse neuron includes a memristor having a variable resistance value configured to receive a first signal from the pre-synaptic neuron. The circuit has an intermediate unit connected in series with the memristor for receiving a second signal from the pre-synaptic neuron and provides an output signal to the post-synaptic neuron. The intermediate unit receives a retroaction signal generated from the post-synaptic neuron and the memristor modifies the resistance value based on a delay between two at least partially overlapped input pulses, a spike event of the first signal and a pulse of the retroaction signal, in order to induct a potentiated state STP or a depressed state STD at the memristor. An electronic neuromorphic system having synaptic circuits and a method of performing spike timing dependent plasticity STDP by a synaptic circuit are also provided.
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