TY  - JOUR
AU  - Yang, Rui
AU  - Huang, He-Ming
AU  - Hong, Qing-Hui
AU  - Yin, Xue-Bing
AU  - Tan, Zheng-Hua
AU  - Shi, Tuo
AU  - Zhou, Ya-Xiong
AU  - Miao, Xiang-Shui
AU  - Wang, Xiao-Ping
AU  - Mi, Shao-Bo
AU  - Jia, Chun-Lin
AU  - Guo, Xin
TI  - Synaptic Suppression Triplet-STDP Learning Rule Realized in Second-Order Memristors
JO  - Advanced functional materials
VL  - 28
IS  - 5
SN  - 1616-301X
CY  - Weinheim
PB  - Wiley-VCH
M1  - FZJ-2019-01067
SP  - 1704455 -
PY  - 2018
AB  - The synaptic weight modification depends not only on interval of the pre‐/postspike pairs according to spike‐timing dependent plasticity (classical pair‐STDP), but also on the timing of the preceding spike (triplet‐STDP). Triplet‐STDP reflects the unavoidable interaction of spike pairs in natural spike trains through the short‐term suppression effect of preceding spikes. Second‐order memristors with one state variable possessing short‐term dynamics work in a way similar to the biological system. In this work, the suppression triplet‐STDP learning rule is faithfully demonstrated by experiments and simulations using second‐order memristors. Furthermore, a leaky‐integrate‐and‐fire (LIF) neuron is simulated using a circuit constructed with second‐order memristors. Taking the advantage of the LIF neuron, various neuromimetic dynamic processes, including local graded potential leaking out, postsynaptic impulse generation and backpropagation, and synaptic weight modification according to the suppression triplet‐STDP rule, are realized. The realized weight‐dependent pair‐ and triplet‐STDP rules are clearly in line with findings in biology. The physically realized triplet‐STDP rule is powerful in developing direction and speed selectivity for complex pattern recognition and tracking tasks. These scalable artificial synapses and neurons realized in second‐order memristors can intrinsically capture the neuromimetic dynamic processes; they are the promising building blocks for constructing brain‐inspired computation systems.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000423512300007
DO  - DOI:10.1002/adfm.201704455
UR  - https://juser.fz-juelich.de/record/860292
ER  -