ommatidium


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Related to ommatidium: Rhabdomere
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  • noun

Words related to ommatidium

any of the numerous small cone-shaped eyes that make up the compound eyes of some arthropods

References in periodicals archive ?
cucurbitae females had smaller individual square ommatidium area than males (376.
In essence, each ommatidium is an individual, low-resolution eye.
exotica grew, the visual angles, representing optical catchment per ommatidium, also remained basically the same (i.
We observed a gradient of ommatidial diameters within the array, with the largest ommatidium at the posterior apex, and the smallest at the base.
Our strategy for examining the retinal code underlying behavior is to first videotape the lateral eye's view of its underwater world with an animal-mounted camera ("CrabCam") while simultaneously recording from a single optic nerve fiber of an ommatidium viewing the central region of the videotaped scene (Passaglia et al.
In compound eyes, the unitary structure composed of optics, photoreceptors, and associated pigment cells is called an ommatidium.
The field of view of a single ommatidium defines the narrow excitatory center, whereas the neural network connecting neighboring ommatidia ([sim]200) generates the wide inhibitory surround.
We tease away a single active optic nerve fiber corresponding to a single ommatidium and pull it into a micro-suction electrode.
The strobic illumination by the beams strongly modulates the firing rate of an ommatidium, with peak firing rates reaching three times the mean [5].
To evaluate the possible clock influence on the strength of lateral inhibitory interactions, we compared the steady state optic nerve discharge of a single dark-adapted ommatidium over a wide range of light intensities during the day and at night.
The final step was to optically isolate the ommatidium of the single active nerve fiber by aligning a fiber optic light pipe (70 [[micro]meter] diameter) along the axis of the ommatidium and in contact with the cornea (4).
Because photon catch is proportional to the cross-sectional area of ommatidial corneal facets, a single Limulus ommatidium (0.
A glass microelectrode filled with 3 M KCl (25 M[Omega]) was connected to a DC bridge amplifier (Electronics Shop, Rockefeller University) and advanced into an ommatidium using a Burleigh Inchworm (Burleigh Instruments, Fishers, NY) attached to a manipulator.