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Spiking computation and stochastic amplification in a neuron-like semiconductor microstructure


Reference:

Samardak, A. S., Nogaret, A., Janson, N. B., Balanov, A., Farrer, I. and Ritchie, D. A., 2011. Spiking computation and stochastic amplification in a neuron-like semiconductor microstructure. Journal of Applied Physics, 109 (10), 102408.

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    Official URL:

    http://dx.doi.org/10.1063/1.3577609

    Abstract

    We have demonstrated the proof of principle of a semiconductor neuron, which has dendrites, axon, and a soma and computes information encoded in electrical pulses in the same way as biological neurons. Electrical impulses applied to dendrites diffuse along microwires to the soma. The soma is the active part of the neuron, which regenerates input pulses above a voltage threshold and transmits them into the axon. Our concept of neuron is a major step forward because its spatial structure controls the timing of pulses, which arrive at the soma. Dendrites and axon act as transmission delay lines, which modify the information, coded in the timing of pulses. We have finally shown that noise enhances the detection sensitivity of the neuron by helping the transmission of weak periodic signals. A maximum enhancement of signal transmission was observed at an optimum noise level known as stochastic resonance. The experimental results are in excellent agreement with simulations of the FitzHugh-Nagumo model. Our neuron is therefore extremely well suited to providing feedback on the various mathematical approximations of neurons and building functional networks.

    Details

    Item Type Articles
    CreatorsSamardak, A. S., Nogaret, A., Janson, N. B., Balanov, A., Farrer, I. and Ritchie, D. A.
    DOI10.1063/1.3577609
    DepartmentsFaculty of Science > Physics
    Publisher StatementNogaret_JAP_2011_109_10_102408.pdf: Copyright 2011 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in: Samardak, A. S., Nogaret, A., Janson, N. B., Balanov, A., Farrer, I. and Ritchie, D. A., 2011. Spiking computation and stochastic amplification in a neuron-like semiconductor microstructure. Journal of Applied Physics, 109 (10), 102408 and may be found at http://dx.doi.org/10.1063/1.3577609; Nogaret_JAP_2011_109_10_102408.doc: Copyright 2011 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in: Samardak, A. S., Nogaret, A., Janson, N. B., Balanov, A., Farrer, I. and Ritchie, D. A., 2011. Spiking computation and stochastic amplification in a neuron-like semiconductor microstructure. Journal of Applied Physics, 109 (10), 102408 and may be found at http://dx.doi.org/10.1063/1.3577609
    RefereedYes
    StatusPublished
    ID Code24309

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