A simple latency-dependent spiking-neuron model of cricket phonotaxis |
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Authors: | Barbara Webb Tom Scutt |
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Institution: | (1) Department of Psychology & ICL Institute for IT, University of Nottingham, Nottingham, UK, |
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Abstract: | A simple hypothesis regarding the recognition behaviour of crickets for conspecific songs is implemented in a dynamic simulation
of spiking neurons and tested on a robot base. The model draws on data from cricket neurophysiology but requires only four
neurons to reproduce a wide range of the observed behaviour. The directional response depends on relative latencies in firing
onset, and the `recognition' emerges from the implicit filtering properties of leaky-integrate-and-fire neurons. Experimental
conditions reproduced include tests of syllable rate preference, song from above with sound from one side, and choice between
songs. The robot produces behaviour closely comparable to the cricket in all but a `split-song' condition. A number of properties
can be observed in the neural circuit that correspond to cricket neurophysiology including apparent `recognition neurons'.
Limitations of the model, extensions and alternative models are discussed.
Received: 14 July 1997 / Accepted in revised form: 7 September 1999 |
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