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Related Experiment Videos

Directional hearing in a silicon cricket.

Richard Reeve1, André van Schaik, Craig Jin

  • 1Institute of Perception, Action and Behaviour, School of Informatics, JCMB, University of Edinburgh, Mayfield Road, Edinburgh, UK.

Bio Systems
|October 13, 2006
PubMed
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Crickets use phonotaxis to find mates and evade predators. A simulation and analog very large scale integrated (aVLSI) circuit model revealed directional sound processing, aiding cricket navigation.

Area of Science:

  • Neuroscience
  • Bioacoustics
  • Robotics

Background:

  • Phonotaxis enables animals to orient towards or away from sound sources.
  • Crickets exhibit phonotaxis for mating (calling song) and predator evasion (bat echolocation).
  • The cricket auditory system's unique mechanisms for sound localization are complex.

Purpose of the Study:

  • To investigate the directional signaling of the cricket auditory system.
  • To validate simulation findings with an analog very large scale integrated (aVLSI) circuit model.
  • To explore the role of acoustic input positioning in sound localization during locomotion.

Main Methods:

  • Development and testing of a simulation model of the cricket auditory system.
  • Design and construction of an aVLSI circuit model replicating the auditory mechanism.

Related Experiment Videos

  • Experimental testing of the aVLSI circuit to assess sound localization hypotheses.

    • Main Results:

    • The simulation model demonstrated directional signaling for calling and echolocation frequencies.
    • The aVLSI circuit model's results corroborated the simulation findings.
    • No significant advantage was found for the directionality of acoustic inputs during walking.

    Conclusions:

    • The cricket auditory system generates distinct directional signals for different sound frequencies, simplifying neural processing.
    • aVLSI circuit modeling provides a viable platform for studying sensorimotor pathways.
    • Further research will integrate aVLSI circuitry with neural models for robotic applications.