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Observation of Spontaneous Bursting Spike Patterns Simple Three Memristor Circuits
From
Arxiv – The memristor is the fourth fundamental circuit element which was predicted to exist from symmetry arguments in 1971. It is a two terminal passive device. It is stateful and the internal state is related to past history of the device. Because of the memristor's ability to learn it has been proposed that the memristor could be a route to neuromorphic or brain-like hardware. As the achievement of this is widely anticipated to lead to a step-change in not just computing, but science and even society itself (if it works we would be able to make a true machine intelligence which could enable us to answer fascinating philosophical questions about the nature of consciousness, intelligence and mankind).
The distinctive switching spikes seen in single memristor circuits can be suppressed in networks of memristors. Instead oscillatory behaviour interrupted by spontaneous irregular bursting spike patterns are observed. An investigation of two and three memistor circuits was undertaken to elucidate the origin and nature of these rich dynamics. No spiking or oscillations are seen in circuits where all the memristors are arranged with matching polarity. Spiking is seen in circuits where memristors are arranged anti-parallel. These dynamics may be due to increased sensitivity to initial conditions or deterministic chaos and are potentially useful for neuromorphic computing.
We have shown that three memristors can produce rich behaviour, including
brain-wave-like oscillations and spiking events. An interesting question is where
has the large spike at the start gone and where have the switching spikes ex-
pected from the I-V curve gone. We believe that the energy of the current spike,
in fact the current itself, has been `absorbed' into the memristor network and
is the cause of the latter spiking events
.
See more and subscribe to NextBigFuture at 2012-11-03 17:44:02 Source: http://nextbigfuture.com/2012/11/observation-of-spontaneous-bursting.html
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