optic lobe


Also found in: Dictionary, Encyclopedia, Wikipedia.
Related to optic lobe: frontal lobe, parietal lobe, temporal lobe

optic lobe

n.
Either of two lobes of the dorsal part of the midbrain, containing primary visual centers.

optic lobe

one of a pair of lobes found as swellings on the dorsal side of the midbrain of some lower vertebrates. The lobes integrate sensory information from the eyes and certain auditory reflexes. In mammals, the corpora quadrigemina are the equivalent of the optic lobes.
Mentioned in ?
References in periodicals archive ?
Each optic lobe is as the synthesis of a large cavity, both sides are combined into the mesencephalon cavity, the boundary is not obvious, and the cavity is back to the fourth ventricle.
Comparative Morphology and Histology of the Brain in Chinese Toad (Bufo gargarizans) and Chinese Fire-billed Newt (Cynops orientalis)/Morfologia e Histologia Comparada del Cerebro en el Sapo Chino (Bufo Gargarizans) y el Triton Vientre de Fuego Chino (Cynops orientalis)
In the future, Riffell wants to test whether other shapes affect mosquito behavior and activity in the optic lobe. Those results may further illuminate the hierarchical nature of mosquito host-hunting behaviors: smell first, then see.
How Mosquitoes Sense Their Next Meal
Modulation of spontaneous and evoked EPSCs and IPSCs in optic lobe neurons of cuttlefish Sepia officinalis by the neuropeptide FMRF-amide.
Microtransplantation of cellular membranes from squid stellate ganglion reveals ionotropic GABA receptors
The OG is located over the optic stalk close to the optic lobe, it is covered by a fine connective layer, and has an elongate shape.
Ultrastructure of the optic gland of the squid Sepiotheutis sepioidea (Cephalopoda: Loliginidae)
The transverse fissure separated the caudal pole of the cerebral hemispheres from the cerebellum dorsally and extended to separate the optic lobe laterally and ventrally (Fig.
Morphological Investigation of the Brain of the African Ostrich (Struthio camelus)/Investigacion Morfologica del Cerebro de la Avestruz Africana (Struthio camelus)
Using advances in the purification of SVs from rat brain (Huttner et al., 1983), we optimized an SV isolation protocol for squid (Logilo pealei [LeSueur, 1821]) optic lobe in this study to obtain a highly pure and intact SV population for biochemical and ultrastructural studies.
Isolation and ultrastructural characterization of squid synaptic vesicles
After the animals were sacrificed, the optic lobes were rapidly dissected from the animals and frozen at -70 [degrees]C.
Oral administration of pharmacologically active substances to squid: a methodological description
(17) found that changing the external [K.sup.+] concentration from 10 to 30 mmol [1.sup.-1] KCl evoked a transient increase in cytoplasmic [Ca.sup.2+] in synaptosomes isolated from squid optic lobe. The [Ca.sup.2+] transient in that study was calculated to be around 340 nmol [1.sup.-1] and reached its maximal level in less than 10 s, which seems to be consisent with the typical behavior of voltage-gated [Ca.sup.2+] channels that inactivate rapidly.
Acetylcholine release and choline uptake by cuttlefish (Sepia officinalis) optic lobe synaptosomes
Two major parts of the nervous system, the optic lobes and the nervous system of the arms, lie outside the brain capsule.
The octopus: a model for a comparative analysis of the evolution of learning and memory mechanisms
Following de-waxing and rehydration, sections containing photoreceptors were immunolabeled for calexcitin using a polyclonal antibody (25U2; cloned from squid optic lobe and raised in rabbit; 1:1000 dil.) (3, 5).
Effects of a sensory block on calexcitin levels in the photoreceptors of Hermissenda crassicornis
For the latter, an average density of 4.6 X [10.sup.6] per cubic millimeter in the housefly Musca domestica [16] corresponds to a mean cell diameter of 7.5 [micro]m; and neuronal diameters in the Drosophila optic lobe fall between 3.6 and 5.0 [micro]m for lamina monopolar cells and 2.8 and 4.2 [micro]m for medulla cells (measurements from ref.
Neuronal Form in the Central Nervous System of the Tadpole Larva of the Ascidian Ciona intestinalis
We refer to these regions as the dorsofrontal neuropil, optic lobe neuropil, and median protocerebral neuropil.
Morphology of the Nervous System of the Barnacle Cypris Larva (Balanus amphitrite Darwin) Revealed by Light and Electron Microscopy

Medical browser ?
Full browser ?