STDP-based Unsupervised Learning of Memristive Spiking Neural Network by Morris-Lecar Model

These days, there is an increasing interest in implementation of spiking neural systems that can be used to perform complex computations or solve pattern recognition tasks like mammalian neocortex. In this paper, Morris-Lecar neuron neuron is utilized to implement bio-inspired memristive spiking neural network for unsupervised learning applications. The spike timing dependent plasticity learning mechanism has been applied as the learning scheme in the system. The memristive implementation of the Morris-Lecar neuron has been analyzed. Also the memristors are utilized as the synapses for the proposed system to reproduce long term potentiation and long term depression. The proposed platform is tested for pattern classification applications and the results are successfully confirmed its functionality.