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- W2030673005 abstract "After impulse activity in the frog retina was suppressed by tetrodotoxin, the graded postsynaptic potentials were still observed inside the ganglion cells. Impulse activity, therefore, may be dispensable for information transmission in the bipolar cells. In short-axon neurons such as the bipolar cells, the postsynaptic potentials arising at the receptor-bipolar synapses appears to spread electrotonically over the whole distance of the cells and, in this manner, transmit information to the ganglion cells. Based on the above observation, electrophysiological properties of the bipolar cells are discussed and compared with those of the multipolar neurons in the central nervous system. Aprés suppression par la tétrodotoxine de l'activitédes impulsions dans la rétine de grenouille, on continueàobserver les potentiels postsynaptiques gradués dans les cellules ganglionnaires. L'activitédes impulsions n'est donc pas indispensableàla transmission de l'information aux cellules bipolaires. Dans des neuronesàaxone court comme les cellules bipolaires, les potentiels postsynaptiques qui arrivent aux synapses du récepteuràla bipolaire semblent diffuserélectrotoniquement sur toute la longueur des cellules et transmettent ainsi l'information aux cellules ganglionnaires. Sur la base de cette observation, on discute les propriétésélectrophysiologiques des cellules bipolaires et on les compareàcelles des neurones multipolaires du systéme nerveux central. Nachdem die Entladungstätigkeit der Froschnetzhaut mit Tetrodotoxin unterdrückt worden war, konnte man die gradierten, postsynaptischen Potentiale innerhalb der Ganglienzellen noch stets beobachten. Es folgt daher, dass die Entladungstätigkeit für die Informationsüberführung in den Bipolarzellen entbehrlich ist. In Kurzaxonneuronen, wie es die Bipolarzellen sind, scheinen sich die an den Rezeptoren-Bipolarsynapsen postsynaptisch gebildeten Potentiale elektrotonischüber die ganze Zellenlänge zu verbreiten und auf diese Weise Information zu den Ganglienzellen zuüberbringen. Auf Grunde dieser Beobachtungen werden die elektrophysiologischen Eigenschaften der Bipolarzellen besprochen und mit den vielendigeh Neuronen des Zentralnervensystems verglichen. Пocлe тoгo кaк импyльcнaя aктивнocть ceтхaтки лягyщки былa пoдa влeнa тeтpoдoкcинoм, мeдлeиный пocтcинaптихecкий пoтeнциaл вce eщe нaблю дaлcя внyтpи гaнглиoзных клeтoк. qIмпyльcнaя aктивнocть пoэтoмy мoжeт быть нecyщecтвeннoй для пepeдaхи иифopмaции бипoляpными клeткaми. B кopoткo-aкcoнных нeвpoнaх, тaких кaк бипoляpныe клeтки, пocтcинaптихecкиe пoтeнциaлы, вoзникaя в cинaпcaх peцeптop-бипoляp, pacпpocтpaняютcя элeктpo тoнихecки пo вceй клeткe и, тaким cпocoбoм, пepeдaют инфopмaцию гaнглиoз ным клeткaм. ocнoвывaяcь нa oпиcaнных выщe экcпepимeнтaх, oпиcывaютcя элeктpoфизиoлoгихecкиe ocoбeннocти бипoляpных клeтoк и cpaвнивaютcя c тaкo выми жe мyльтипoляpных нeвpoнoв в цeнтpaльнoй нepвнoй cиcтeмe." @default.
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- W2030673005 date "1970-01-01" @default.
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- W2030673005 title "Duality of conduction mechanism in bipolar cells of the frog retina" @default.
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- W2030673005 doi "https://doi.org/10.1016/0042-6989(70)90057-x" @default.
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