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  • 1
    Electronic Resource
    Electronic Resource
    The projection of the temporal retina in rats, studied by retrograde transport of horseradish peroxidase (1979)
    Springer
    Experimental brain research 35 (1979), S. 457-464 
    Details
    ISSN: 1432-1106
    Keywords: Rats ; Retina ; Ganglion cells
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Horseradish peroxidase (HRP) was injected unilaterally into the lateral geniculate nucleus or tectum, or both, in 26 hooded rats in order to mark the exact extent of the retina from which uncrossed optic axons arise. This region occupied about a quarter of the retina, in the temporal periphery, following thalamic injections, but a much smaller region following tectal injections. By comparing the proportions of HRP positive neurones in nasal and temporal retinae of both eyes it was shown that: (1) within the region supplying uncrossed axons the majority of the ganglion cells nevertheless project contralaterally, (2) a large proportion of the ganglion cells from the temporal crescent project bilaterally, which does not occur from the remainder of the retina, (3) ganglion cells of all sizes contribute to both ipsilateral and contralateral projections. The results also support earlier suggestions that the smallest neurones in the ganglion cell layer do not send an axon into the brain, and are therefore not ganglion cells
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00236764
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Direct and indirect retinal input into degenerated dorsal lateral geniculate nucleus after striate cortical removal in monkey: implications for residual vision (1991)
    Springer
    Experimental brain research 86 (1991), S. 271-292 
    Details
    ISSN: 1432-1106
    Keywords: Visual cortex ; Retina ; Thalamus ; Blindsight ; GABA
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary We removed the striate cortex of one cerebral hemisphere in a macaque monkey, causing almost total retrograde degeneration of the corresponding dorsal lateral geniculate nucleus (dLGN) and extensive transneuronal degeneration of ganglion cells in the corresponding hemi-retina of each eye. The rare surviving geniculate projection neurons were retrogradely labelled by horseradish peroxidase (HRP) from extra-striate cortex and retinogeniculate terminals were labelled by an intraocular injection of HRP. Retinal terminals in the degenerated dLGN made synaptic contact exclusively with the dendrites of interneurons immunopositive for γ-aminobutyric acid (GABA) in both parvocellular and magnocellular regions of dLGN. As well as being postsynaptic to retinal terminals these vescicle-containing dendrites were pre- and postsynaptic to other similar dendrites, and presynaptic to relay cells. Surviving labelled projection neurons received retinal input indirectly, via both the GABA-immunopositive interneurons and GABA-immunonegative terminals characteristic of those from the superior colliculus. In the degenerated, as opposed to the normal dLGN, about 20% of retinal terminals were GABA-immunopositive and GABA-immunoreactivity was prominently elevated in the ganglion and amacrine cell layers of the degenerated half of the retina. The optic nerve also contained numerous GABA-immunopositive axons but very few such axons were found in a normal optic nerve processed in identical manner. The surviving pathways from the retina must underlie the visual abilities that survive striate cortical removal in monkeys and human patients and may involve the degenerated dLGN as well as the mid-brain.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00228951
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    The morphological correlates of X- and Y-like retinal ganglion cells in the retina of monkeys (1981)
    Springer
    Experimental brain research 43 (1981), S. 226-228 
    Details
    ISSN: 1432-1106
    Keywords: Retina ; Ganglion cells ; Monkey ; Morphology
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The morphology of the ganglion cells of the monkey's retina was revealed by filling the cells with horseradish peroxidase from their cut axons in the optic nerve. This procedure gave much more consistent results than the Golgi method, was much quicker and filled dendrites just as extensively. Quantitative measures of the dendritic tree of two types of ganglion cell, Pα and Pβ, suggest that they correspond to the physiologically defined Y- and X-cells, respectively.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00237768
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Bifurcating retinal ganglion cell axons in the rat, demonstrated by retrograde double labelling (1981)
    Springer
    Experimental brain research 44 (1981), S. 34-40 
    Details
    ISSN: 1432-1106
    Keywords: Retrograde tracers ; Double labelling ; Retina ; Rats
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary By injecting two different tracers, one in each lateral geniculate nucleus, it was shown that some retinal ganglion cells project to both hemispheres in the rat. The double-labelled ganglion cells were confined to the temporal retina corresponding to the binocular visual field.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00238747
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    Paper (German National Licenses)
    Fulltext
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