Wang, Y; Liu, S C (2011). Mismatch reduction through dendritic nonlinearities in a 2D silicon dendritic neuron array. In: IEEE International Symposium on Circuits and Systems (ISCAS) 2011, Rio de Janeiro, Brazil, 15 May 2011 - 18 May 2011, 677-680.
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This paper describes a novel 2D programmable dendritic neuron array consisting of a 3×32 dendritic compartment array and a 1×32 somatic compartment array. Each dendritic compartment contains two types of regenerative nonlinearities: an NMDA nonlinearity and a dendritic spike nonlinearity. The chip supports the programmability of local synaptic weights and the configuration of dendritic morphology for individual neurons through the address-event representation protocol. With a novel local cable circuit between neighboring compartments, different dendritic morphologies can be constructed. From results measured on a chip fabricated in a 4-metal, 2-poly, 0.35µm CMOS technology, we show one instance of how dendritic nonlinearities can contribute to neuronal computation: the dendritic spike mechanism dynamically reduces the mismatch-induced coefficient of variation of the somatic response amplitude from approximately 40% to 3.5%.
|Item Type:||Conference or Workshop Item (Paper), refereed, original work|
|Communities & Collections:||07 Faculty of Science > Institute of Neuroinformatics|
|DDC:||570 Life sciences; biology|
|Event End Date:||18 May 2011|
|Deposited On:||09 Mar 2012 14:31|
|Last Modified:||04 Apr 2012 14:26|
|Series Name:||IEEE International Symposium on Circuits and Systems (ISCAS) 2011|
|Number of Pages:||3|
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