TY - GEN
T1 - Stochastic synapse with short-term depression for silicon neurons
AU - Xu, Peng
AU - Horiuchi, Timothy K.
AU - Sarje, Anshu
AU - Abshire, Pamela
PY - 2007
Y1 - 2007
N2 - We report a stochastic dynamical synapse for VLSI spiking neural systems. The compactness of the circuit, real-time stochastic behavior, and probability tuning make it well suitable to implement stochastic synapses with variety of dynamics. The stochastic synapse implements short-term depression (STD) using a subtractive single release model. Preliminary experimental results show a good match with theoretical predictions. The output from the stochastic synapse with STD has negative autocorrelation and lower power spectral density at low frequencies which can remove the information redundancy in the input spike train. The mean transmission probability is inversely proportional to the input spike rate which has been suggested as an automatic gain control mechanism in neural systems. The silicon stochastic synapse with plasticity could potentially be a powerful addition to existing deterministic VLSI spiking neural systems.
AB - We report a stochastic dynamical synapse for VLSI spiking neural systems. The compactness of the circuit, real-time stochastic behavior, and probability tuning make it well suitable to implement stochastic synapses with variety of dynamics. The stochastic synapse implements short-term depression (STD) using a subtractive single release model. Preliminary experimental results show a good match with theoretical predictions. The output from the stochastic synapse with STD has negative autocorrelation and lower power spectral density at low frequencies which can remove the information redundancy in the input spike train. The mean transmission probability is inversely proportional to the input spike rate which has been suggested as an automatic gain control mechanism in neural systems. The silicon stochastic synapse with plasticity could potentially be a powerful addition to existing deterministic VLSI spiking neural systems.
KW - Short-term depression (STD)
KW - Spike
KW - Stochastic synapse
KW - Synaptic plasticity
KW - Synaptic transmission
UR - https://www.scopus.com/pages/publications/67651145920
U2 - 10.1109/BIOCAS.2007.4463318
DO - 10.1109/BIOCAS.2007.4463318
M3 - Conference contribution
AN - SCOPUS:67651145920
SN - 142441525X
SN - 9781424415250
T3 - Conference Proceedings - IEEE Biomedical Circuits and Systems Conference Healthcare Technology, BiOCAS2007
SP - 99
EP - 102
BT - Conference Proceedings - IEEE Biomedical Circuits and Systems Conference Healthcare Technology, BiOCAS2007
T2 - IEEE Biomedical Circuits and Systems Conference Healthcare Technology, BiOCAS2007
Y2 - 27 November 2007 through 30 November 2007
ER -