Engineering a thalamo-cortico-thalamic circuit on SpiNNaker: a preliminary study toward modeling sleep and wakefulness

Bhattacharya, Basabdatta S. and Patterson, Cameron and Galluppi, Francesco and Durrant, Simon J. and Furber, Steve (2014) Engineering a thalamo-cortico-thalamic circuit on SpiNNaker: a preliminary study toward modeling sleep and wakefulness. Frontiers in Neural Circuits, 8 . ISSN 1662-5110

Full content URL: http://dx.doi.org/10.3389/fncir.2014.00046

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Abstract

We present a preliminary study of a thalamo-cortico-thalamic (TCT) implementation on SpiNNaker (Spiking Neural Network architecture), a brain inspired hardware platform designed to incorporate the inherent biological properties of parallelism, fault tolerance and energy efficiency. These attributes make SpiNNaker an ideal platform for simulating biologically plausible computational models. Our focus in this work is to design a TCT framework that can be simulated on SpiNNaker to mimic dynamical behavior similar to Electroencephalogram (EEG) time and power-spectra signatures in sleep-wake transition. The scale of the model is minimized for simplicity in this proof-of-concept study; thus the total number of spiking neurons is �1000 and represents a "mini-column" of the thalamocortical tissue. All data on model structure, synaptic layout and parameters is inspired from previous studies and abstracted at a level that is appropriate to the aims of the current study as well as computationally suitable for model simulation on a small 4-chip SpiNNaker system. The initial results from selective deletion of synaptic connectivity parameters in the model show similarity with EEG power spectra characteristics of sleep and wakefulness. These observations provide a positive perspective and a basis for future implementation of a very large scale biologically plausible model of thalamo-cortico-thalamic interactivity-the essential brain circuit that regulates the biological sleep-wake cycle and associated EEG rhythms. © 2014 Bhattacharya, Patterson, Galluppi, Durrant and Furber.

Keywords:SpiNNaker, thalamo-cortico-thalamic circuitry, Computational model, Sleep, Izhikevich model, synaptic connectivity, PyNN, JCOpen
Subjects:G Mathematical and Computer Sciences > G750 Cognitive Modelling
G Mathematical and Computer Sciences > G510 Information Modelling
H Engineering > H100 General Engineering
Divisions:College of Science > School of Engineering
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ID Code:14364
Deposited On:19 Jun 2014 14:10

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