10 ENGLISH BOOKS RELATING TO «OMMATIDIUM»
Discover the use of
ommatidium in the following bibliographical selection. Books relating to
ommatidium and brief extracts from same to provide context of its use in English literature.
1
Studies on Excitation and Inhibition in the Retina: A ...
Each ommatidium has an optical aperture about 0.1 mm. in diameter; the facets
are spaced approximately 0.3 mm. apart, center to center, on the surface of the
eye. Each ommatidium has a "visual field" subtending a few square degrees of ...
2
Animal Models in Eye Research
Externally, the eye appears as a regular hexagonal array of facets, which are the
lenses of each ommatidium. This highly organized repetitive array of facets in the
compound eye is a direct consequence of the underlying cellular lattice of cells ...
3
Nerve Cells and Animal Behaviour
5' Scene Corneal .7 K Djmfl 3W lens > I. l Crystalline Lenses : ' cone
Rhabdomeres Images on Photoreceptors Photorecéptofs Ommatidium (a) Lens i
Lens Nucleus \I\ Photoreceptor Photoreceptor cell cell i Rhabdom Nucleus * ><
Axons Axon ...
Peter Simmons, David Young, 2010
4
Cockroaches as Models for Neurobiology
The structural unit of the retina is the ommatidium. The structure of an
ommatidium is presented schematically in Figure 1 . The number of ommatidia
per eye varies with age and species, but is about 2000 in an adult P. americana.
Ivan Huber, Edward P. Masler, Balakrishna R. Rao, 1990
5
An Introduction to Neural Networks
The receptor cells in the ommatidium (retinula cells) respond to light with a small
receptor potential. Then the output cell, the eccentric cell (named for its off-center
position in the ommatidium, not for any behavioral peculiarities), responds by ...
6
Foundations of Animal Behavior: Classic Papers with Commentaries
The bee's eye is able to recognise the plane of vibration of polarized light and
can in consequence detect the position of the unseen sun if a spot of blue sky is
visible [see von Frisch (11, pp. 88-109)]. Autrum suggests that each ommatidium
of ...
Lynne D. Houck, Lee C. Drickamer, Animal Behavior Society, 1996
7
Encyclopedia of Entomology
This arrangement is thought to make for a sharper image focused on the
rhabdom of the photoreceptor cells in a particular ommatidium. When light is very
dim, sharpness of vision may not be as important as perception of form and
movement.
8
Biology in Physics: Is Life Matter?
Is Life Matter? Konstantin Bogdanov. isolated from each other. In this case the
lens of each ommatidium forms the inverted image of an object on the face of the
corresponding rhabdom. The compound eye can operate in the second mode ...
Konstantin Bogdanov, 2000
9
Diel Vertical Migration of Zooplankton in Lakes and Oceans: ...
Table 7.1 Some optical properties of an ommatidium of the compound eye of
Daphnia Authors Receptive field angle Central zones Heberdey and Kupka (
1941) 45◦ 13◦ Young and Downing (1976) 35◦ 10◦ Frost (1975) <15◦ Consi et al. (
1990) ...
The diameters of the lenses are 32 /ttn. so each ommatidium is set at an angle 32
/1200 = 0.027 radians (1.5°) to the next. The eye is presumably unable to
distinguish objects separated by angles less than this: a bee viewing a page 30
cm ...
R. McNeill Alexander, 1979
10 NEWS ITEMS WHICH INCLUDE THE TERM «OMMATIDIUM»
Find out what the national and international press are talking about and how the term
ommatidium is used in the context of the following news items.
Seeing triple
In Dr Floreano's arrangement, by contrast, each of the vertices of the triangle of detectors inside a single ommatidium can pair with each of the ... «The Economist, Jul 15»
Which animal has the most sensitive eyes?
In insects that fly during the day, each ommatidium has a sleeve of pigment that absorbs excessive light, ensuring they don't get dazzled. «BBC News, Feb 15»
MAPPING NEURAL CONNECTIONS
“The whole thing is absolutely crystalline in its arrangement,” Meinertzhagen says, with regular columns of neurons underlying each eye facet, or ommatidium. «BioTechniques.com, Nov 14»
Image sensor based on mantis shrimp vision detects cancer
The image sensor mimics that of the compound eye of the mantis shrimp, which contains a group of individual photocells called an ommatidium ... «Vision Systems Design, Oct 14»
Stroudsburg grad uses fellowship to study butterflies
Joyce, a senior, and her faculty mentor Marc Seid, Ph.D., assistant professor of biology, researched “Ommatidium Structure and Development ... «Pocono Record, Aug 14»
Guido LaPorta, Greater Pennsylvania Education Foundation
Senior Elizabeth Joyce of Stroudsburg and her faculty mentor, Marc Seid, Ph.D., assistant professor of biology, will research “Ommatidium ... «Citizens Voice, Aug 14»
Digital Agenda: Swiss, French & German scientists develop …
Each ommatidium is composed of a lens (172 microns), combined with an electronic pixel (30 microns). These sensors have advanced optical ... «EU News, Aug 13»
Insect Paparazzi: Eye of the Dragon
... dragonflies. Each ommatidium is a like a single pixel that makes up the dragonfly's visual world, and some dragonflies have nearly 30,000. «Scientific American, Jul 13»
Biologists: Starfish See with Compound Eyes on Their Arms
Each red cup corresponds to a single optical unit, ommatidium (Dan-Erik Nilsson / Lund University). “From an evolutionary point of view it is ... «Sci-News.com, Jul 13»
Starfish have eyes at the tips of their arms
Each red cup corresponds to a single optical unit, ommatidium, in an arthropod compound eye. Photo credit: Dan-Erik Nilsson, Lund University. «EarthSky, Jul 13»
