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Analogue summation of electrical spike trains in semiconductor nerve fibres

Samardak, A., Taylor, S., Nogaret, A., Hollier, G., Austin, J., Farrer, I. and Ritchie, D. (2008) Analogue summation of electrical spike trains in semiconductor nerve fibres. Physica E-Low Dimensional Systems and Nanostructures, 40 (6). pp. 2214-2216. ISSN 1386-9477

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We fabricate and investigate electrical pulse propagation in modulation-doped semiconductor nerve fibres made of sub-micron pn wires. We report the analogue summation of electrical impulses at the junction of three or more fibres. These wires model the longitudinal conductivities of potassium and sodium ions inside and outside a nerve capillary as well as the transverse capacitance of the nerve membrane and the non-linear conductance of its ion channels. We demonstrate the summation and annihilation of electrical impulses at both 300 and 77 K, which forms the basis for making spike-timing neural networks. A comparison of experimental and theoretical parameters of pulse propagation at these two temperatures is presented. The successful implementation of artificial nerve fibres promises parallel computation devices and spiking neural networks.

Item Type: Article
Institution: The University of York
Academic Units: The University of York > Computer Science (York)
Depositing User: Sherpa Assistant
Date Deposited: 08 Aug 2008 13:48
Last Modified: 08 Aug 2008 13:48
Published Version: http://dx.doi.org/10.1016/j.physe.2007.11.028
Status: Published
Publisher: Elsevier B.V.
Refereed: Yes
Identification Number: 10.1016/j.physe.2007.11.028
URI: http://eprints.whiterose.ac.uk/id/eprint/3947

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