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Related Experiment Videos

Auditory orientation in crickets: pattern recognition controls reactive steering.

James F A Poulet1, Berthold Hedwig

  • 1Laboratory of Sensory Processing, Brain Mind Institute, Faculty of Life Science, SV-BMI-LSENS AAB105, Station 15, Ecole Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland. james.poulet@epfl.ch

Proceedings of the National Academy of Sciences of the United States of America
|October 18, 2005
PubMed
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Crickets use a hardwired auditory-to-motor pathway to locate mates. Species-specific songs increase steering response gain, enabling precise orientation and pursuit of calling conspecifics.

Area of Science:

  • Animal Behavior
  • Neuroethology
  • Sensory Ecology

Background:

  • Insects utilize diverse sensory cues for orientation, including visual, olfactory, and acoustic signals.
  • Auditory orientation in insects, unlike visual or olfactory, is largely hardwired and genetically determined.
  • Effective orientation relies on integrating sensory recognition with motor localization processes.

Purpose of the Study:

  • To characterize the interaction between auditory recognition and motor localization in insect orientation.
  • To investigate how species-specific auditory cues modulate steering responses in crickets.
  • To elucidate the gain control mechanisms in the auditory-to-motor pathway.

Main Methods:

  • Utilized a sensitive trackball system to record cricket behavior.

Related Experiment Videos

  • Analyzed auditory evoked steering responses in female crickets.
  • Investigated the effect of species-specific songs on auditory steering gain.

    • Main Results:

    • Cricket auditory recognition, tuned to species-specific songs, controls the amplitude of steering responses.
    • Exposure to male calling songs rapidly increases auditory steering gain (within 2-5 seconds).
    • Crickets exhibited steering towards non-attractive sound patterns when embedded within the species-specific song.

    Conclusions:

    • A gain control mechanism in the auditory-to-motor pathway enhances cricket auditory localization.
    • This mechanism allows crickets to pursue conspecific songs despite environmental noise or interference.
    • The findings offer insights into the organization of recognition and localization networks in insects.