. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. B 0 0 10 20 30 40 FIGURE 17A. Depolarizing currents to Type B photoreceptor produce impulses associated with IPSPs in simultaneously impaled optic ganglion cell (Alkon, 1973). B. Responses of "C" cell to light flashes of increasing intensity. Note increased frequency of firing after the hyper- polarization for dim to moderate flashes. The duration of hyperpolarization with cessation of firing increases only for the brighter flashes (Alkon, 1973). Values beneath intracellular voltage recordings refer to attenua
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. B 0 0 10 20 30 40 FIGURE 17A. Depolarizing currents to Type B photoreceptor produce impulses associated with IPSPs in simultaneously impaled optic ganglion cell (Alkon, 1973). B. Responses of "C" cell to light flashes of increasing intensity. Note increased frequency of firing after the hyper- polarization for dim to moderate flashes. The duration of hyperpolarization with cessation of firing increases only for the brighter flashes (Alkon, 1973). Values beneath intracellular voltage recordings refer to attenuation with neutral density filters of quartz-iodide source with intensity on preparation of 105 ergs-cm"2-sec'1 designated as "1". At least one type of optic ganglion cell (the "C" cell), recognized by its char- acteristic double spike, is inhibited by both ipsilateral and contralateral Type B photoreceptors (demonstrated by triple recordings in 12 different animals). Optic ganglion cells within the same optic ganglion do not have synaptic interactions (demonstrated with 25 pairs). Optic ganglion cells do interact, however, with other optic ganglion cells in the contralateral optic ganglion. Neurochemical features of these photoreceptors and optic ganglion cells were also helpful in reproducibly identifying cells within the Hermissenda visual system. A number of observations, for instance, indicated a cholinergic basis for inhibitory. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report 1907/08-1952; Lillie, Frank Rattray, 1870-1947; Moore, Carl Richard, 1892-; Redfield, Alfred Clarence, 1890-1983. Woods Hole, Mass. : Marine Biological Laboratory
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
