Sensory physiology: Brainless eyes

@article{Wehner2005SensoryPB,
  title={Sensory physiology: Brainless eyes},
  author={R{\"u}diger Wehner},
  journal={Nature},
  year={2005},
  volume={435},
  pages={157-159}
}
  • R. Wehner
  • Published 12 May 2005
  • Biology, Medicine
  • Nature
The visual equipment of box jellyfish includes eight optically advanced eyes that operate with only a rudimentary nervous system. As they produce blurred images, their function remains an open question.Missing link?Cubozoans, or box jellyfish, each have twenty-four eyes of four types, but no central brain for information processing. An investigation of these eyes reveals optics as sophisticated as in vertebrates. Despite this, the retina is out of focus and the sharp image is not used to… Expand
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References

SHOWING 1-10 OF 24 REFERENCES
Advanced optics in a jellyfish eye
TLDR
It is shown that box-jellyfish lenses contain a finely tuned refractive index gradient producing nearly aberration-free imaging, demonstrating that even simple animals have been able to evolve the sophisticated visual optics previously known only from a few advanced bilaterian phyla. Expand
Visual Ecology and Functional Morphology of Cubozoa (Cnidaria)1
  • M. Coates
  • Biology, Medicine
  • Integrative and comparative biology
  • 2003
TLDR
This literature review collects, into one place, what is known about: the multiple eye types of box jellyfish, cubomedusan life history and ecology, and the sensory and neural systems of box Jellyfish. Expand
From Neuron to Brain
TLDR
Although the authors have achieved a masterful overview of neurophysiologic processes, they have not attempted a comprehensive treatment of the mammalian nervous system and this volume provides a strong basis for reading and digesting other texts which deal more directly with clinically relevant material. Expand
Animal eyes.
  • M. Wiener
  • Medicine
  • The American orthoptic journal
  • 1957
TLDR
For Aldo Leopold, the green fire in the wolf’s eyes symbolized a new way of seeing the authors' place in the world, and with his new insight, he provided a new ethical perspective for the environmental movement. Expand
Activity‐dependent receptive field changes in the surround of adult cat visual cortex lesions
TLDR
Small RF changes can be induced by visual stimulation within one hour in normal cells as well as in cells at the border of cortical lesions, which appears to be related to lesion‐induced changes of excitability. Expand
Neuronal control of swimming in jellyfish: a comparative story
TLDR
The swim-control systems of hydrozoan and scyphozoan medusae show distinct differences despite similarity in the mechanics of swimming in the two groups, and an elaboration of Romanes' dichotomy is used to suggest that cubomedusae are more closely aligned with the scy PHs, and to highlight areas of future research that could be used to look for common features of medusan conduction systems. Expand
The ocellar component of flight equilibrium control in dragonflies
  • G. Stange
  • Physics
  • Journal of comparative physiology
  • 2004
SummaryThis paper describes the dynamics of light-evoked head reflexes in the dragonflyHemicordulia tau under light conditions which were selected to optimally address the ocelli.1.The responsesExpand
Central control of swimming in the cubomedusan jellyfishCarybdea rastonii
TLDR
The swimming system of Carybdea is comparable to the “giant fiber nerve net (GFNN)” of other scyphomedusae, and increases in muscle cell depolarizations may be related to the facilitation in the size of extracellularly recorded muscle potentials. Expand
Desert ant navigation: how miniature brains solve complex tasks
  • R. Wehner
  • Biology, Medicine
  • Journal of Comparative Physiology A
  • 2003
TLDR
The general message is that Cataglyphis uses path integration as an egocentric guideline to acquire continually updated spatial information about places and routes, and relies on procedural knowledge, and largely context-dependent retrieval of such knowledge, rather than on all-embracing geocentred representations of space. Expand
Rock Magnetism: Fundamentals and Frontiers
Most observers of the geophysical scene, those involved with plate tectonics and continental drift in particular, are aware of the seminal contributions of rock magnetism and its sister discipline,Expand
...
1
2
3
...