Learning temporal correlations in biologically-inspired aVLSI

Temporally-asymmetric Hebbian learning is a class of algorithms motivated by data from recent neurophysiology experiments. While traditional Hebbian learning rules use mean firing rates to drive learning, this new form of learning involves precise firing times. Hence, such algorithms can capture temporal spike correlations. We present circuits and methods to implement temporally-asymmetric Hebbian learning in analog VLSI. We also describe a small feed-forward 2 layer network that learns spike trains correlations. A chip including a single neuron and a network of adaptive spiking neurons has been fabricated in a CMOS 0.6  process to validate the ideas presented.

• Type: Conference
• Year: 2003
• Where: ISCAS
• Authors: Adria Bofill-i-Petit, Alan F. Murray
• Keywords: Hebbian Learning, Hebbian Learning Rules, ISCAS 2003, Temporally-asymmetric Hebbian Learning