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Some voluntary C-bends may be Mauthner neuron initiated.

James G Canfield1

  • 1Department of Psychology, University of Washington, Campus Box 351525, Seattle, WA 98195, USA. jamescan@u.washington.edu

Journal of Comparative Physiology. A, Neuroethology, Sensory, Neural, and Behavioral Physiology
|August 4, 2007
PubMed
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Goldfish exhibit voluntary C-bends, similar to escape responses, when striking prey. This suggests Mauthner neurons can be voluntarily activated without feeding stimuli.

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Area of Science:

  • Neuroscience
  • Ethology
  • Ichthyology

Background:

  • Predatory fish use rapid body flexion, a "C-bend", to stun prey.
  • This C-bend maneuver is similar to the C-start escape response in many fish species.
  • Mauthner neurons typically initiate the C-start escape response.

Purpose of the Study:

  • To investigate previously undescribed voluntary behaviors in goldfish.
  • To determine if goldfish can voluntarily perform C-bends similar to their escape responses.
  • To explore the role of Mauthner neurons in voluntary actions.

Main Methods:

  • Observation of goldfish behavior during prey capture attempts.
  • Analysis of kinematic data (turn duration, angle, angular velocity) of voluntary C-bends.
  • Comparison of voluntary C-bend kinematics with C-start escape responses.

Main Results:

  • Goldfish were observed striking objects using voluntary C-bends.
  • Kinematic analysis revealed similarities between voluntary C-bends and C-start escape responses.
  • Data suggest Mauthner neuron involvement in voluntary C-bends.

Conclusions:

  • Goldfish can voluntarily execute C-bends resembling escape responses.
  • The Mauthner neuron may be voluntarily activated for non-escape behaviors.
  • This implies voluntary control over a neural circuit typically associated with reflexes.