ArticleJournal of comparative physiology. A, Neuroethology, sensory, neural, and behavioral physiology2017
Electrophysiological measures of temporal resolution, contrast sensitivity and spatial resolving power in sharks.
Article in Journal of comparative physiology. A, Neuroethology, sensory, neural, and behavioral physiology, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers, 1 of them a synthesis that pooled it.
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Who cites it
9 citing papers in PubMed, 1 synthesis or guideline pooled it, 31 citations in OpenAlex.
- A flashing light may not be that flashy: A systematic review on critical fusion frequencies.PloS one · 2022Pooled it
- Widespread and Convergent Evolution of Cone Monochromacy in Galeomorph Sharks.Molecular biology and evolution · 2025Article
- Dazzling damselfish: investigating motion dazzle as a defence strategy in humbug damselfish (PeerJ · 2024Article
- Physiological properties of the visual system in the Green Weaver ant, Oecophylla smaragdina.Journal of comparative physiology. A, Neuroethology, sensory, neural, and behavioral physiology · 2023Article
- NocturnaliScience · 2022Article
- Review: Use of Electrophysiological Techniques to Study Visual Functions of Aquatic Organisms.Frontiers in physiology · 2022Review
- A shark's eye view: testing the 'mistaken identity theory' behind shark bites on humans.Journal of the Royal Society, Interface · 2021Article
- Temporal vision: measures, mechanisms and meaning.The Journal of experimental biology · 2021Article
- Visual discrimination and resolution in freshwater stingrays (Potamotrygon motoro).Journal of comparative physiology. A, Neuroethology, sensory, neural, and behavioral physiology · 2021Article
Corrections and comments
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Authors and funding
4 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
In most animals, vision plays an important role in detecting prey, predators and conspecifics. The effectiveness of vision in assessing cues such as motion and shape is influenced by the ability of the visual system to detect changes in contrast in both space and time. Understanding the role vision plays in shark behaviour has been limited by a lack of knowledge about their temporal resolution, contrast sensitivity and spatial resolution. In this study, an electrophysiological approach was used to compare these measures across five species of sharks: Chiloscyllium punctatum, Heterodontus portusjacksoni, Hemiscyllium ocellatum, Mustelus mustelus and Haploblepharus edwardsii. All shark species were highly sensitive to brightness contrast and were able to detect contrast differences as low as 1.6%. Temporal resolution of flickering stimuli ranged from 28 to 44 Hz. Species that inhabit brighter environments were found to have higher temporal resolution. Spatial resolving power was estimated in C. punctatum, H. portusjacksoni and H. ocellatum and ranged from 0.10 to 0.35 cycles per degree, which is relatively low compared to other vertebrates. These results suggest that sharks have retinal adaptations that enhance contrast sensitivity at the expense of temporal and spatial resolution, which is beneficial for vision in dimly lit and/or low contrast aquatic environments.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.