Library

feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    ISSN: 1432-1106
    Keywords: Rat ; dLGN ; Retinal afferents ; X- and Y-channel ; Geniculo-cortical relay cells ; HRP
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary In the rat's dorsal lateral geniculate nucleus (dLGN) two types of retino-geniculate axon terminals have been visualized electron microscopically in adult and juvenile material as well as in Golgi-Kopsch and Golgi-Rapid impregnated sections. The two types differ in size and number of boutons. 2a-terminals have large, sparse boutons, mainly connected with branching zones of geniculo-cortical relay cells (GCR cells). 2b-terminals bear numerous small boutons forming simple contacts with more distal segments of GCR cell dendrites. We are not able to give any information about participation of either type in complex synaptic zones. After horseradish peroxidase (HRP) injection in the superior colliculus optic tract fibres and lateral fibre bundles in the dLGN are labelled with reaction product. Besides these tracts the terminal branching zones of retino-tectal fibre collaterals in the dLGN also show reaction product. As a result of the good visualization of these retinal terminals by the HRP-method they are identified as 2a-terminals. We conclude that 2a-terminals may represent the Y-channel projecting from the retina to both the superior colliculus and the dLGN.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 2
    ISSN: 1432-1106
    Keywords: Dorsal lateral geniculate nucleus ; Horseradish peroxidase ; Retinal axons ; Rat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Retinal endings in the dorsal lateral geniculate nucleus (dLGN) of the rat were visualized by anterogradely transported horseradish peroxidase following injections in the optic tract. The morphological findings confirm the two types of retinal axons previously suggested by Golgi investigations. In the caudal third of the dLGN type 2b axons, with small dense clusters of boutons, are the only representatives of retinal fibres seen. In the rostral two thirds they are intermingled with the larger type 2a terminals, but tend to accumulate laterally, adjacent to the optic tract. This study supports the concept that large retinal ganglion cells probably give rise to 2a axons that may represent a Y-like channel, whereas 2b axons are derived from small ganglion cells, and may relay a W-like pathway.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...