Photopic and scotopic spatiotemporal tuning of adult zebrafish vision.

Hollbach, Nadine; Tappeiner, Christoph; Jazwinska, Anna; Enzmann, Volker; Tschopp, Markus (2015). Photopic and scotopic spatiotemporal tuning of adult zebrafish vision. Frontiers in systems neuroscience, 9(20), p. 20. Frontiers Research Foundation 10.3389/fnsys.2015.00020

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Sensitivity to spatial and temporal patterns is a fundamental aspect of vision. Herein, we investigated this sensitivity in adult zebrafish for a wide range of spatial (0.014 to 0.511 cycles/degree [c/d]) and temporal frequencies (0.025 to 6 cycles/s) to better understand their visual system. Measurements were performed at photopic (1.8 log cd m(-2)) and scotopic (-4.5 log cd m(-2)) light levels to assess the optokinetic response (OKR). The resulting spatiotemporal contrast sensitivity (CS) functions revealed that the OKR of zebrafish is tuned to spatial frequency and speed but not to temporal frequencies. Thereby, optimal test parameters for CS measurements were identified. At photopic light levels, a spatial frequency of 0.116 ± 0.01 c/d (mean ± SD) and a grating speed of 8.42 ± 2.15 degrees/second (d/s) was ideal; at scotopic light levels, these values were 0.110 ± 0.02 c/d and 5.45 ± 1.31 d/s, respectively. This study allows to better characterize zebrafish mutants with altered vision and to distinguish between defects of rod and cone photoreceptors as measurements were performed under different light conditions.

Item Type:

Journal Article (Original Article)

Division/Institute:

04 Faculty of Medicine > Department of Head Organs and Neurology (DKNS) > Clinic of Ophthalmology

UniBE Contributor:

Hollbach, Nadine; Tappeiner, Christoph; Enzmann, Volker and Tschopp, Markus

Subjects:

600 Technology > 610 Medicine & health

ISSN:

1662-5137

Publisher:

Frontiers Research Foundation

Language:

English

Submitter:

Sebastian Wolf

Date Deposited:

05 May 2015 15:15

Last Modified:

15 Mar 2021 13:00

Publisher DOI:

10.3389/fnsys.2015.00020

PubMed ID:

25788878

Uncontrolled Keywords:

adult zebrafish, contrast sensitivity, optokinetic response, photopic, scotopic, spatiotemporal vision

BORIS DOI:

10.7892/boris.67502

URI:

https://boris.unibe.ch/id/eprint/67502

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