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Using the optokinetic response to study visual function of zebrafish
Published on: February 2, 2010
Computer-based analysis of the optokinetic response in zebrafish larvae
Corinne Hodel1, Stephan C F Neuhauss
1Institute of Zoology, Neurobiology, University of Zurich, 8057 Zurich, Switzerland.
CSH Protocols
|March 2, 2011
Summary
Zebrafish larvae exhibit robust optokinetic responses (OKR) to visual stimuli. This study details a method for automatically recording and analyzing larval eye movements to assess visual performance after genetic modifications.
Area of Science:
- Neuroscience
- Vision Science
- Developmental Biology
Background:
- Vertebrates exhibit stereotypic eye movements in response to visual field motion.
- The optokinetic response (OKR) is a well-established visual reflex.
- Zebrafish (Danio rerio) larvae older than 4 days post-fertilization show a robust OKR, making them a suitable model for visual studies.
Purpose of the Study:
- To describe a simple, automated method for evaluating the optokinetic response (OKR) in zebrafish larvae.
- To provide a protocol for assessing visual performance in genetically modified zebrafish.
- To enable real-time or off-line analysis of larval eye movements.
Main Methods:
- Immobilizing zebrafish larvae (Danio rerio) older than 4 days post-fertilization.
- Presenting computer-generated visual stimuli to the immobilized larvae.
- Recording larval eye movements using a digital video camera.
- Automatically analyzing eye movements with computer software.
Main Results:
- The described protocol allows for the automated evaluation of optokinetic responses in zebrafish larvae.
- Visual performance can be assessed following genetic manipulations.
- Data analysis can be performed in real-time or off-line.
Conclusions:
- This automated method provides a straightforward and effective approach for studying visual function in zebrafish larvae.
- The protocol is valuable for research involving genetic modifications affecting visual pathways.
- The optokinetic response in zebrafish serves as a reliable indicator of visual performance.
