Bogdan, Petrut, Pineda Garcia, Garibaldi, Davidson, Simon, Hopkins, Michael, James, Robert and Furber, Steve (2019) Event-based computation: unsupervised elementary motion decomposition. 2019 EMerging Technology Conference (EMiT), Huddersfield, UK, 9-11 April 2019. Published in: Bane, M K and Homes, V, (eds.) Proceedings of the 2019 Emerging Technology Conference. 20-23. EMiT/University of Huddersfield/High End Compute Ltd/University of Manchester ISBN 978-0-9933426-4-6
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Abstract
Fast, localised motion detection is crucial for an efficient attention mechanism. We show that modelling a network capable of such motion detection can be performed using spiking neural networks simulated on many-core neuromorphic hard-ware. Moreover, highly sensitive neurons arise from the presented network architecture through unsupervised self-organisation. We use a synaptic rewiring rule which has been shown to enable the formation and refinement of neural topographic maps. Our extension allows newly formed synapses to be initialised with a delay drawn from a uniform distribution. Repeated exposure to moving bars enables neurons to be sensitised to a preferred direction of movement. Incorporating heterogeneous delays results in more sensitive neural responses. A readout mechanism involving a neuron for each learnt motion is sufficient to establish the input stimulus class.
Item Type: | Conference Proceedings |
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Keywords: | SpiNNaker, Neuromorphic computing, Spiking Neural Network, structural plasticity, synaptic rewiring, topographic maps |
Schools and Departments: | School of Engineering and Informatics > Engineering and Design |
Research Centres and Groups: | Centre for Computational Neuroscience and Robotics |
Subjects: | Q Science > QA Mathematics > QA0075 Electronic computers. Computer science > QA0076.8.A-Z Special computers, computer systems, and microprocessors. By name, A-Z Q Science > QA Mathematics > QA0075 Electronic computers. Computer science |
Related URLs: | |
Depositing User: | Garibaldi Pineda Garcia |
Date Deposited: | 08 Oct 2019 08:42 |
Last Modified: | 08 Oct 2019 11:31 |
URI: | http://sro.sussex.ac.uk/id/eprint/80938 |
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📧 Request an updateProject Name | Sussex Project Number | Funder | Funder Ref |
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Human Brain Project Specific Grant Agreement 2 � HBP SGA2 | G2410 | EUROPEAN UNION | 785907 |