時系列パターンを保持可能なSTDPを有するパルス形ハードウェアニューラルネットワーク

概要

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In recent years, synaptic plasticity, which is dependent on the order and time interval of pre- and post-synaptic spikes (STDP: spike-timing-dependent synaptic plasticity), has been observed by physiological experiments. There is a type of STDP, which is characterized by a symmetric time window (a Mexican-hat-type window). It has been reported that a Mexican-hat window participates in an inhibitory interneuron. In this study, we investigate a memory of temporal sequences patterns using P-HNN (Pulse-type Hardware Neural Network) with STDP (Mexican-hat time window). To be more specific, we propose the construction of a P-HNN with STDP. In addition, we examine the temporal sequences patterns which were memorized by using a P-HNN with STDP. As a result, we show that a P-HNN with STDP memorize temporal sequences output voltage patterns which obeyed the temporal sequences input current patterns.
2009-07-01