FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2023922029> ?p ?o ?g. }

• W2023922029 endingPage "118" @default.
• W2023922029 startingPage "61" @default.
• W2023922029 abstract "Morphologically speaking, there are five kinds of cone cells in the retina of the rudd ( Scardinius erythrophthalmus ). But two of them, the principal elements of the double cones and the free principal cones, are probably functionally equivalent, while another, sparse, population of small ( oblique ) cones (which disappear in older fish), is unlikely to make a significant contribution to visual spectral sensitivity. Thus, principal and accessory cones (usually paired with one another), and single cones seem to be the three receptors which underlie the fish’s trichromacy. Photographic densitometry of individual cone cells was used to provide evidence that accessory cones contain a green-absorbing photopigment and the single cones a blue one. Other arguments are given in support of those identifications, and they also strongly suggest that principal cones contain the red-absorbing pigment. Golgi-impregnated bipolar cells were examined electron-microscopically to determine the specific patterns of synaptic connexion they make with these different, anatomically identifiable, colour cones and with the retinal rods. Three principal arrangements were distinguished (see figure 69, page 190). (1) Rod bipolar cells comprise two distinct morphological types, both of which connect exclusively to principal (red) cones as well as to the rods within the outlines of their dendritic fields. (2) Selective cone bipolar cells, more delicate neurons with considerably wider dendritic fields, connect (according to type) to one or other of the different colour cone populations. Examples analysed were specific for the accessory (green) or for the single (blue) cones; no bipolar cells were found connected only to red cones. (3) Mixed cone bipolars have the smallest dendritic fields, and connect to combinations of cones (for example, red and green, or green and blue, but not red and blue). They also have synaptic input (usually relatively sparse) from the rods. Cells were encountered connecting to all three cone types, but they were only partially analysed, and are not described at length. The light microscopic morphology of these bipolar cell types consistently reflects the detailed pattern of connexion each makes with the different receptor populations (just as the morphology of the cones reflects the spectral properties of their photopigment). But while their synaptic connectivity is generally highly specific for cone type, they do occasionally make anomalous connexions with the ‘wrong’ receptors. There is a high degree of divergence (page 85) at the receptor-bipolar synapses, and the different kinds of cones each characteristically connect to different numbers of bipolar cells. Principal (red) cones, which are the most numerous, individually connect to more bipolars than cones of other types, whose characteristic synaptic divergence is likewise related to the frequency with which they occur in the retina. However, rods, which are much more numerous than cones, do not conform with this generalization. The selectivity with which the synaptic terminals of the different cones are connected together by their invaginating basal processes was also examined. These processes link neighbouring synaptic terminals of differently coloured cones: specifically, principal (red) cone basal processes invaginate accessory (green) cone pedicles, and vice versa. Single (blue) cone basal processes connect only to accessory cone pedicles, but that synaptic relation is not reciprocated. These synapses between the cones have important bearing upon interpretation of the bipolar cell connectivity patterns. In their light, the interaction between colour channels which the convergence of different cones onto the mixed cone bipolar dendrites mediates, seems to re-iterate a process already undertaken more peripherally. Likewise, whereas the anatomy of the selective cone bipolars appears designed to convey activity from the individual cone populations, the responses of the receptors they sample must already be influenced by activity in other colour channels." @default.
• W2023922029 created "2016-06-24" @default.
• W2023922029 creator A5013018441 @default.
• W2023922029 date "1975-02-20" @default.
• W2023922029 modified "2023-09-27" @default.
• W2023922029 title "Colour receptors, and their synaptic connexions, in the retina of a cyprinid fish" @default.
• W2023922029 cites W1489088820 @default.
• W2023922029 cites W1517930533 @default.
• W2023922029 cites W1550237743 @default.
• W2023922029 cites W158003358 @default.
• W2023922029 cites W1966630405 @default.
• W2023922029 cites W1966795232 @default.
• W2023922029 cites W1973884954 @default.
• W2023922029 cites W1982318748 @default.
• W2023922029 cites W1982342794 @default.
• W2023922029 cites W1982913241 @default.
• W2023922029 cites W1982971018 @default.
• W2023922029 cites W1983113602 @default.
• W2023922029 cites W1983800229 @default.
• W2023922029 cites W1983823059 @default.
• W2023922029 cites W198538537 @default.
• W2023922029 cites W1986878610 @default.
• W2023922029 cites W1992535975 @default.
• W2023922029 cites W1993891690 @default.
• W2023922029 cites W2000706620 @default.
• W2023922029 cites W2007127285 @default.
• W2023922029 cites W2015905613 @default.
• W2023922029 cites W2022183500 @default.
• W2023922029 cites W2022625411 @default.
• W2023922029 cites W2024572865 @default.
• W2023922029 cites W2027708975 @default.
• W2023922029 cites W2028701130 @default.
• W2023922029 cites W2029164645 @default.
• W2023922029 cites W2029782357 @default.
• W2023922029 cites W2034815203 @default.
• W2023922029 cites W2036453841 @default.
• W2023922029 cites W2037174224 @default.
• W2023922029 cites W2038373493 @default.
• W2023922029 cites W2043052802 @default.
• W2023922029 cites W2045080061 @default.
• W2023922029 cites W2046971557 @default.
• W2023922029 cites W2048548360 @default.
• W2023922029 cites W2050201493 @default.
• W2023922029 cites W2050332330 @default.
• W2023922029 cites W2055572290 @default.
• W2023922029 cites W2056038780 @default.
• W2023922029 cites W2057396589 @default.
• W2023922029 cites W2057458562 @default.
• W2023922029 cites W2058625543 @default.
• W2023922029 cites W2059991538 @default.
• W2023922029 cites W2060712801 @default.
• W2023922029 cites W2060961557 @default.
• W2023922029 cites W2061527776 @default.
• W2023922029 cites W2062496418 @default.
• W2023922029 cites W2067001372 @default.
• W2023922029 cites W2067235140 @default.
• W2023922029 cites W2068412010 @default.
• W2023922029 cites W2082725248 @default.
• W2023922029 cites W2094604151 @default.
• W2023922029 cites W2104228780 @default.
• W2023922029 cites W2115790637 @default.
• W2023922029 cites W2117731089 @default.
• W2023922029 cites W2133242539 @default.
• W2023922029 cites W2150316126 @default.
• W2023922029 cites W2151631401 @default.
• W2023922029 cites W2164740576 @default.
• W2023922029 cites W2169354503 @default.
• W2023922029 cites W2328860442 @default.
• W2023922029 cites W2343272302 @default.
• W2023922029 cites W2412102612 @default.
• W2023922029 cites W2887014719 @default.
• W2023922029 cites W4236988647 @default.
• W2023922029 cites W4302606213 @default.
• W2023922029 doi "https://doi.org/10.1098/rstb.1975.0004" @default.
• W2023922029 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/234623" @default.
• W2023922029 hasPublicationYear "1975" @default.
• W2023922029 type Work @default.
• W2023922029 sameAs 2023922029 @default.
• W2023922029 citedByCount "205" @default.
• W2023922029 countsByYear W20239220292012 @default.
• W2023922029 countsByYear W20239220292013 @default.
• W2023922029 countsByYear W20239220292014 @default.
• W2023922029 countsByYear W20239220292015 @default.
• W2023922029 countsByYear W20239220292019 @default.
• W2023922029 countsByYear W20239220292020 @default.
• W2023922029 countsByYear W20239220292022 @default.
• W2023922029 crossrefType "journal-article" @default.
• W2023922029 hasAuthorship W2023922029A5013018441 @default.
• W2023922029 hasConcept C105702510 @default.
• W2023922029 hasConcept C113016886 @default.
• W2023922029 hasConcept C120665830 @default.
• W2023922029 hasConcept C121332964 @default.
• W2023922029 hasConcept C169760540 @default.
• W2023922029 hasConcept C189780591 @default.
• W2023922029 hasConcept C2777093970 @default.
• W2023922029 hasConcept C2780827179 @default.
• W2023922029 hasConcept C2909208804 @default.
• W2023922029 hasConcept C505870484 @default.

• next