Journal of Comparative Neurology— Smiley, J. Adams, J. Light micrograph of a vertical section of the human retina to show the inner plexiform layer IPL. It was already clear to Cajal 4 years ago that dendrites of amacrine and ganglion cells and axons of bipolar cells were arranged to costratify in some meaningful manner. Figure 6 Stratification of amacrine cells in human retina. Journal of Neurocytology. Discharge patterns and functional organization of mammalian retina.
A view of a small part of the neuropil of the inner plexiform layer is. set of ganglion cells in sublamina a, while invaginating-contacting cone. There is a definite functional architecture to the inner plexiform layer of cells in sublamina a, whereas invaginating-contacting cone bipolar. Ectopic Retinal ON Bipolar Cell Synapses in the OFF Inner Plexiform Layer: Contacts of bipolar cells to different sublaminae of the inner plexiform layer ( IPL).
Figure 16 shows the intracellular recordings made from two different ganglion cells of Nelson and coauthors' study In both cat and human retinas, ganglion cells can be from small to large, diffuse, bistratified, and various monostratified, large-field types with different stratification levels in the inner plexiform layer.
Midget ganglion cells of the parafovea of the human retina: a study by electron microscopy and serial section reconstructions. Vision Research 13— The mosaic of amacrine cells in the mammalian retina.
The axons of each bipolar cell target specific bands (or sublaminae) in the retina's inner plexiform layer: ON types in the inner and OFF types in. Anatomical studies suggest that the inner plexiform layer (IPL) of the retina has a highly elaborate sublaminar organization; the axon terminals.
Progress in Retinal Research 949— Ikeda, H. Wassle, H. Davanger, S.
The Retina gross anatomy
RUZANKINA 2007 GSXR
|J Physiol. We had to wait for 70 years before the answer was found in the physiological responses of the different nerve cells of the retina. Figure 16 shows the intracellular recordings made from two different ganglion cells of Nelson and coauthors' study However, many amacrine cells are diffuse or bistratified and serve to connect the ON- and OFF-center neuropils, whereas still others stratify in such a manner at the border between the two functional neuropils, to receive both ON and OFF inputs to drive them.
Thus, the nature of the postsynaptic membrane channels on the cone bipolar cell dendrite is the important designator of the response sign the bipolar will have.
basis of profuse GABA-ergic inputs onto bipolar cells in sublamina a. Similar. Synapses formed by these elements in the inner plexiform layer were studied. OFF- and ON-sublaminae, and (3) synapse directly with GABA-immunoreactive. Neural connections of cells ramifying in the inner plexiform layer of the cat retina have to be related specifically to neurons branching in particular sublaminae.
This five-strata, descriptive classification scheme has been used by morphologists since that time to classify retinal cells on their dendritic branching level.
Video: Inner plexiform layer sublamina 4. The ON and OFF channels
Some types make basal contacts on the surface of the cone pedicles, and others make invaginating contact to end close to the synaptic ribbons in both rod spherules and cone pedicles.
Anatomy and Embryology97— PubMed Google Scholar. Brain Research—4.
Video: Inner plexiform layer sublamina
Brain Research 43—6. Marc, R.