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Development of functional connections between thalamic fibres and the visual cortex of the wallaby as revealed by current source density analysis in vivo.

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dc.contributor.authorPearce, Amy R
dc.contributor.authorJames, Andrew
dc.contributor.authorMark, R F
dc.date.accessioned2015-12-13T23:16:49Z
dc.date.issued2000
dc.date.updated2015-12-12T08:49:43Z
dc.description.abstractFunctional development of thalamic input to the cortex in anaesthetised wallaby pouch young between postnatal day 25 (P25) and P153 has been studied by electrical stimulation of the optic nerve, current source density (CSD) analysis, and histologic identification of recording sites. Conduction in the optic nerve was recorded prior to P39, by which time responses from the superior colliculus appeared. No evoked potential of cortical origin was recorded until P46, even though thalamic fibres grew into the cortical plate from P15. The first cortical synaptic responses were recorded at the margin of the subplate and the developing cortical plate, where cells that later comprise the adult layer 6 settle. At about P66, an additional short-latency, superficial response appeared, coinciding with the formation of layer 4. The deep response was retained in layer 6. Evoked activity in the presumed layer 4 was found progressively deeper in the cortex over the next few weeks, which would be expected from the addition of layer 3 above it. By P113, a new sink was added superficial in the cortex. Thalamocortical connections follow the same deep-to-superficial order in development as the cellular layers of the cortex. (C) 2000 Wiley-Liss, Inc.
dc.identifier.issn0021-9967
dc.identifier.urihttp://hdl.handle.net/1885/89594
dc.publisherJohn Wiley & Sons Inc
dc.sourceJournal of Comparative Neurology
dc.subjectKeywords: animal tissue; article; brain maturation; controlled study; marsupial; nerve cell differentiation; nonhuman; priority journal; superior colliculus; synaptogenesis; thalamocortical tract; visual cortex; Animals; Animals, Newborn; Electric Stimulation; Elec Electrophysiology; Marsupials; Superior colliculus; Synapses
dc.titleDevelopment of functional connections between thalamic fibres and the visual cortex of the wallaby as revealed by current source density analysis in vivo.
dc.typeJournal article
local.bibliographicCitation.lastpage456
local.bibliographicCitation.startpage441
local.contributor.affiliationPearce, Amy R, College of Medicine, Biology and Environment, ANU
local.contributor.affiliationJames, Andrew, College of Medicine, Biology and Environment, ANU
local.contributor.affiliationMark, R F, College of Medicine, Biology and Environment, ANU
local.contributor.authoremailu8607703@anu.edu.au
local.contributor.authoruidPearce, Amy R, u9603515
local.contributor.authoruidJames, Andrew, u8607703
local.contributor.authoruidMark, R F, u750004
local.description.embargo2037-12-31
local.description.notesImported from ARIES
local.description.refereedYes
local.identifier.absfor110906 - Sensory Systems
local.identifier.ariespublicationMigratedxPub19657
local.identifier.citationvolume418
local.identifier.doi10.1002/(SICI)1096-9861(20000320)418:4<441::AID-CNE6>3.0.CO;2-6
local.identifier.scopusID2-s2.0-0034048417
local.identifier.uidSubmittedByMigrated
local.type.statusPublished Version

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