Pairing frequency experiments in visual cortex reproduced in a neuromorphic STDP circuit

Rahimiazghadi, Mostafa Rahimi, Al-Sarawi, Said, Abbott, Derek, and Iannella, Nicolangelo (2013) Pairing frequency experiments in visual cortex reproduced in a neuromorphic STDP circuit. In: Proceedings of the IEEE 20th International Conference on Electronics, Circuits, and Systems, pp. 229-232. From: ICECS 2013: IEEE 20th International Conference on Electronics, Circuits, and Systems, 8-11 December 2013, Abu Dhabi, United Arab Emirates.

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Abstract

Previous studies show that the conventional pair-based form of STDP (PSTDP), is not able to account for many biological experiments including frequency-dependent pairing experiments performed in the visual cortex region of the brain. However, new improved synaptic plasticity rules, such as Triplet-based Spike Timing Dependent Plasticity (TSTDP), are capable of replicating many biological experiments outcomes including the results of the experiments carried out in the visual cortex. This paper proposes a programmable analog neuromorphic circuit, which is capable of reproducing pairing frequency experiments in the visual cortex. The circuit utilizes transistors working in their subthreshold region of operation. In addition, it implements a minimal model TSTDP learning rule, which needs a low number of transistors compared to its PSTDP circuit counterparts. These features result in low-power compact circuits that are suitable for large-scale VLSI implementations of Spiking Neural Networks (SNNs) with improved synaptic plasticity and learning capabilities.

Item ID: 45719
Item Type: Conference Item (Research - E1)
ISBN: 978-1-4799-2452-3
Date Deposited: 04 Nov 2016 00:50
FoR Codes: 09 ENGINEERING > 0906 Electrical and Electronic Engineering > 090601 Circuits and Systems @ 100%
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