scholarly journals The presence of UV wavelengths improves the temporal resolution of the avian visual system

2010 ◽  
Vol 213 (19) ◽  
pp. 3357-3363 ◽  
Author(s):  
D. Rubene ◽  
O. Hastad ◽  
R. Tauson ◽  
H. Wall ◽  
A. Odeen
Keyword(s):  
Visual System ◽  
Temporal Resolution ◽  
Avian Visual System

scholarly journals Expression of TrkB receptor isoforms in the developing avian visual system

1996 ◽  
Vol 16 (5) ◽  
pp. 1740-1752 ◽  
Author(s):  
AS Garner ◽  
HJ Menegay ◽  
KL Boeshore ◽  
XY Xie ◽  
JM Voci ◽  
...  
Keyword(s):  
Visual System ◽  
Trkb Receptor ◽  
Receptor Isoforms ◽  
Avian Visual System

scholarly journals Daily rhythm of vigilance assessed by temporal resolution of the visual system

2000 ◽  
Vol 40 (25) ◽  
pp. 3467-3473 ◽  
Author(s):  
Martin Lotze ◽  
Bernhard Treutwein ◽  
Till Roenneberg
Keyword(s):  
Visual System ◽  
Temporal Resolution ◽  
Daily Rhythm

scholarly journals OCCHIO E VISIONE: MERAVIGLIA DELLA NATURA O PROGETTO DIFETTOSO?

2020 ◽  
Author(s):  
Pier Giorgio Gobbi
Keyword(s):  
Visual System ◽  
Physical Model ◽  
Temporal Resolution ◽  
Human Visual System ◽  
Dynamic Range ◽  
Evolutionary Design ◽  
Human Eye ◽  
Quantitative Estimates ◽  
Chromatic Aberrations

The behavior of the human visual system exhibits some flaws, including monochromatic and chromatic aberrations, finite dynamic range, limited spatial and temporal resolution. Why did it evolve this way? Can it be improved somehow, for example with the support of technology? The answer is obtained from a neuro-physical model developed by the author, which provides quantitative estimates of the optical and visual performances of the human eye, in agreement with experimental records. The conclusion, based on the principle of utility, is that the evolutionary design of the visual system is perfectly tailored for the primary survival needs of our primitive ancestors in daylight illumination, and it can hardly be improved with the help of human technology.

Roles of Microglia in the Developing Avian Visual System

2002 ◽  
pp. 15-35 ◽  
Author(s):  
Julio Navascués ◽  
Miguel A. Cuadros ◽  
Ruth Calvente ◽  
José L. Marín-Teva
Keyword(s):  
Visual System ◽  
Avian Visual System

scholarly journals Host and brood parasite coevolutionary interactions covary with comparative patterns of the avian visual system

2021 ◽  
Vol 17 (9) ◽  
Author(s):  
Ian J. Ausprey ◽  
Mark E. Hauber
Keyword(s):  
Visual System ◽  
Bird Species ◽  
Sensory Systems ◽  
Host Recognition ◽  
Avian Host ◽  
Brood Parasite ◽  
Evolutionary Origins ◽  
Eye Size ◽  
Avian Visual System ◽  
Host Parasite

In coevolutionary arms-races, reciprocal ecological interactions and their fitness impacts shape the course of phenotypic evolution. The classic example of avian host–brood parasite interactions selects for host recognition and rejection of increasingly mimetic foreign eggs. An essential component of perceptual mimicry is that parasitic eggs escape detection by host sensory systems, yet there is no direct evidence that the avian visual system covaries with parasitic egg recognition or mimicry. Here, we used eye size measurements collected from preserved museum specimens as a metric of the avian visual system for species involved in host–brood parasite interactions. We discovered that (i) hosts had smaller eyes compared with non-hosts, (ii) parasites had larger eyes compared with hosts before but not after phylogenetic corrections, perhaps owing to the limited number of independent evolutionary origins of obligate brood parasitism, (iii) egg rejection in hosts with non-mimetic parasitic eggs positively correlated with eye size, and (iv) eye size was positively associated with increased avian-perceived host–parasite eggshell similarity. These results imply that both host-use by parasites and anti-parasitic responses by hosts covary with a metric of the visual system across relevant bird species, providing comparative evidence for coevolutionary patterns of host and brood parasite sensory systems.

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