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  • Title: An intensity-dependent biphasic neuron in mudpuppy retina.
    Author: Dong CJ, McReynolds JS.
    Journal: Vision Res; 1992 Aug; 32(8):1405-8. PubMed ID: 1455712.
    Abstract:
    Intracellular recordings in dark-adapted mudpuppy retinas have revealed a type of infrequently encountered cell with unusual response properties. These cells may be a subclass of horizontal cell since they are encountered at the same depth as horizontal cells and have large receptive fields and response amplitudes. However, they differ from typical horizontal cells in that they are depolarized by low intensity illumination and hyperpolarized by higher intensity illumination at all wavelengths. Both types of responses appear to be driven mainly by 572 nm cones. Both the depolarizing and hyperpolarizing responses were unaffected by APB, indicating that they are not mediated by on-center bipolar cells.
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