Title:
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Bio-Inspired Autonomous Hardware Neuro-controller Device on an FPGA Inspired by the Hippocampus
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One method in achieving artificial intelligence is by emulating biological
concepts onto an electronic device, specifically how a biological organism governs
its behaviour. This research project investigates how the hippocampus works; and
attempts to model this region of the brain onto an electronic device. The
hippocampus is chosen because this is one of the regions in the brain responsible for
learning and memory. This study uses models of the pyramidal neurons in the
hippocampus as well as its spatial representation as the design components for a
hardware neuro-controller module. The method chosen to model the individual
neurons is the two-dimensional bio-inspired Izhikevich algorithm that has the ability
to describe a variety of neuron dynamic behaviours observed in the brain. The
hippocampus-inspired spiking neural network architecture also includes place
cells/place field representation, a rate-based representation that provides spatial
representation of the environment to the hippocampus. A biological nervous system
is a dynamical system; it is governed by the learning rules that adjust the strength of
connectivity between the neurons in the neural network. These learning rules are
implemented to the hippocampus-inspired spiking neural network to allow the neural
network to perform its task of path navigation. Following successful simulations of
the software prototype of the neural network architecture in performing its desired
task, this architecture is then synthesized onto a Field Programmable Gate Array
(FPGA) device. This is to allow the neural network architecture to be utilized as a
neuro-controller device for the purpose of path navigation, creates memories, and
thus achieving autonomy.
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