Please use this identifier to cite or link to this item: https://ahro.austin.org.au/austinjspui/handle/1/12259
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dc.contributor.authorPietersen, A N Jen
dc.contributor.authorCheong, S Ken
dc.contributor.authorSolomon, S Gen
dc.contributor.authorTailby, Cen
dc.contributor.authorMartin, P Ren
dc.date.accessioned2015-05-16T01:55:10Z
dc.date.available2015-05-16T01:55:10Z
dc.date.issued2014-06-11en
dc.identifier.citationJournal of Neurophysiology 2014; 112(6): 1421-38en
dc.identifier.govdoc24920024en
dc.identifier.otherPUBMEDen
dc.identifier.urihttps://ahro.austin.org.au/austinjspui/handle/1/12259en
dc.description.abstractVisual perception requires integrating signals arriving at different times from parallel visual streams. For example, signals carried on the phasic-magnocellular (MC) pathway reach the cerebral cortex pathways some tens of milliseconds before signals traveling on the tonic-parvocellular (PC) pathway. Visual latencies of cells in the koniocellular (KC) pathway have not been specifically studied in simian primates. Here we compared MC and PC cells to "blue-on" (BON) and "blue-off" (BOF) KC cells; these cells carry visual signals originating in short-wavelength-sensitive (S) cones. We made extracellular recordings in the lateral geniculate nucleus (LGN) of anesthetized marmosets. We found that BON visual latencies are 10-20 ms longer than those of PC or MC cells. A small number of recorded BOF cells (n = 7) had latencies 10-20 ms longer than those of BON cells. Within all cell groups, latencies of foveal receptive fields (<10° eccentricity) were longer (by 3-8 ms) than latencies of peripheral receptive fields (>10°). Latencies of yellow-off inputs to BON cells lagged the blue-on inputs by up to 30 ms, but no differences in visual latency were seen on comparing marmosets expressing dichromatic ("red-green color-blind") or trichromatic color vision phenotype. We conclude that S-cone signals leaving the LGN on KC pathways are delayed with respect to signals traveling on PC and MC pathways. Cortical circuits serving color vision must therefore integrate across delays in (red-green) chromatic signals carried by PC cells and (blue-yellow) signals carried by KC cells.en
dc.language.isoenen
dc.subject.othercolor visionen
dc.subject.otherlateral geniculate nucleusen
dc.subject.othervisionen
dc.titleTemporal response properties of koniocellular (blue-on and blue-off) cells in marmoset lateral geniculate nucleus.en
dc.typeJournal Articleen
dc.identifier.journaltitleJournal of neurophysiologyen
dc.identifier.affiliationSave Sight Institute, University of Sydney, Sydney, Australiaen
dc.identifier.affiliationprmartin@physiol.usyd.edu.au.en
dc.identifier.affiliationDepartment of Experimental Psychology, University College London, London, United Kingdom; and.en
dc.identifier.affiliationSchool of Medical Sciences, University of Sydney, Sydney, Australiaen
dc.identifier.affiliationFlorey Institute of Neuroscience and Mental Health, Heidelberg, Australiaen
dc.identifier.affiliationAustralian Research Council Centre of Excellence for Integrative Brain Function, University of Sydney, Sydney, Australiaen
dc.identifier.doi10.1152/jn.00077.2014en
dc.description.pages1421-38en
dc.relation.urlhttps://pubmed.ncbi.nlm.nih.gov/24920024en
dc.type.austinJournal Articleen
local.name.researcherTailby, Chris
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.cerifentitytypePublications-
item.fulltextNo Fulltext-
item.grantfulltextnone-
item.languageiso639-1en-
item.openairetypeJournal Article-
crisitem.author.deptClinical Neuropsychology-
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