2D co-ordinate transformation based on a spike timing-dependent plasticity learning mechanism

Neural Networks : the Official Journal of the International Neural Network Society
QingXiang WuBrendan Glackin

Abstract

In order to plan accurate motor actions, the brain needs to build an integrated spatial representation associated with visual stimuli and haptic stimuli. Since visual stimuli are represented in retina-centered co-ordinates and haptic stimuli are represented in body-centered co-ordinates, co-ordinate transformations must occur between the retina-centered co-ordinates and body-centered co-ordinates. A spiking neural network (SNN) model, which is trained with spike-timing-dependent-plasticity (STDP), is proposed to perform a 2D co-ordinate transformation of the polar representation of an arm position to a Cartesian representation, to create a virtual image map of a haptic input. Through the visual pathway, a position signal corresponding to the haptic input is used to train the SNN with STDP synapses such that after learning the SNN can perform the co-ordinate transformation to generate a representation of the haptic input with the same co-ordinates as a visual image. The model can be applied to explain co-ordinate transformation in spiking neuron based systems. The principle can be used in artificial intelligent systems to process complex co-ordinate transformations represented by biological stimuli.

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Citations

Oct 1, 2012·IEEE Transactions on Neural Networks and Learning Systems·Narayan Srinivasa, Youngkwan Cho
Mar 12, 2021·Bioinspiration & Biomimetics·Omar AbdAllah ZahraDavid Navarro-Alarcon

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