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Updated: Apr 18, 2026

Forebrain Electrophysiological Recording in Larval Zebrafish
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Recording field potentials from zebrafish larvae during escape responses.

Bryan D Monesson-Olson1, Eileen L Troconis1, Josef G Trapani1

  • 1Biology Department and Neuroscience Program, Amherst College, Amherst, MA 01002.

Journal of Undergraduate Neuroscience Education : JUNE : a Publication of FUN, Faculty for Undergraduate Neuroscience
|January 8, 2015
PubMed
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Zebrafish larvae exhibit a rapid escape response to stimuli, involving the Mauthner cell (M-cell) and generating a measurable field potential. This study details how to record these potentials in undergraduate labs, offering insights into neuroscience.

Area of Science:

  • Neuroscience
  • Physiology
  • Behavioral Biology

Background:

  • Vertebrates utilize startle responses to evade danger.
  • Zebrafish larvae display a well-characterized escape behavior triggered by stimuli.
  • This escape involves trigeminal neurons, the Mauthner cell (M-cell), and axial musculature, producing a C-bend.

Purpose of the Study:

  • To describe a method for recording field potentials during zebrafish escape responses in undergraduate teaching laboratories.
  • To provide a practical guide for setting up equipment and software for these recordings.
  • To discuss pedagogical outcomes and potential advanced exercises for students.

Main Methods:

  • Recording field potentials from larval zebrafish during evoked escape responses.
Keywords:
Mauthner cellselectromyography (EMG)electrophysiologyescape responsesfield potentialsmotor behaviorneurophysiologyzebrafish

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  • Utilizing tactile or acoustic stimuli to elicit the M-cell mediated escape.
  • Describing necessary equipment, software, and recording configurations for a teaching lab setting.

    • Main Results:

    • A large field potential is generated by the synchronized activation of the M-cell, motor neurons, and trunk muscles during the C-bend escape.
    • The described setup allows for reliable observation and study of the escape reflex circuit.
    • Low-cost alternatives for recording field potentials are also considered.

    Conclusions:

    • Recording field potentials in larval zebrafish provides a simple yet effective undergraduate laboratory experience.
    • This method facilitates learning about vertebrate reflexes, neurophysiology, and the M-cell escape response.
    • The study offers a valuable resource for neuroscience education, adaptable for various learning levels.