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Synaptic organization of the lobster optic lamina

Horridge, George Adrian

Description

The most superficial neuropile region of the optic lobe, the optic lantina, or lamina ganglionaris, of arthropods is placed between the retina and the second neuropile layer, the medulla. The retina in the crustacean compound eye is built up of a large number of ommatidia, which are the characteristic light-perceptive cells, each consisting of 6-8 retinula cells in most species. The retinula cell membrane is elaborated into a complex light-sensitive system of tubules called the...[Show more]

dc.contributor.authorHorridge, George Adrian
dc.date.accessioned2019-11-05T03:25:13Z
dc.identifier.urihttp://hdl.handle.net/1885/182594
dc.description.abstractThe most superficial neuropile region of the optic lobe, the optic lantina, or lamina ganglionaris, of arthropods is placed between the retina and the second neuropile layer, the medulla. The retina in the crustacean compound eye is built up of a large number of ommatidia, which are the characteristic light-perceptive cells, each consisting of 6-8 retinula cells in most species. The retinula cell membrane is elaborated into a complex light-sensitive system of tubules called the rhabdomere by which the energy of the photon is transformed to nervous excitation, not necessarily impulses. The optic lamina is the place where the retinula cell axons, after passing through the basement membrane in small bundles, terminate upon the axons of ganglion cells of the lamina. After a decussation in the optic chiasma, the second-order fibers reach the medulla, where they terminate on the third neuron in the chain (Fig. I). In other words, the optic lamina is the first of a series of relay stations on the optic pathway. Since the functional properties of the retinula cells can be recorded directly with microelectrodes in favorable species, an elucidation of the morphology of the first synapse will assist in the interpretation of the function of the lamina.
dc.format.extent12
dc.format.mimetypeapplication/pdf
dc.language.isoen_AU
dc.publisherHungarian Academy of Sciences
dc.relation.ispartofSymposium on Neurobiology of Invertebrates
dc.rights© Akedemiai Kiado, Budapest 1968
dc.subjectlobster
dc.subjectoptic
dc.subjectlamina
dc.subjectommatidia
dc.subjectretinula cell
dc.subjectrhabdomere
dc.subjectsynaptic organization
dc.titleSynaptic organization of the lobster optic lamina
dc.typeBook chapter
local.description.notesAt the time of publication the author was affiliated with the Gatty Marine Laboratory, University of St. Andrews, Scotland.
dc.date.issued1967
local.type.statusPublished Version
local.contributor.affiliationHorridge, George Adrian, Division of Biomedical Science and Biochemistry, CoS Research School of Biology, The Australian National University
local.description.embargo2037-12-31
local.bibliographicCitation.startpage111
local.bibliographicCitation.lastpage122
CollectionsANU Research Publications

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