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. 2008 Jan 9;28(2):456–464. doi: 10.1523/JNEUROSCI.2735-07.2008

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Copyright © 2008 Society for Neuroscience 0270-6474/08/280456-09$15.00/0

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Figure 3. — Horizontal cell light response. A, Response of a horizontal cell to a 2000 μm spot square wave stimulus modulated at 2 Hz (stimulus trace below). B, Ratio of depolarization amplitude to hyperpolarization amplitude as a function of spot diameter (from 72 to 2000 μm) for a single cell. The slow depolarization increases relative to the hyperpolarization as spot diameter increases. C, Ratio of depolarization to hyperpolarization amplitude (as shown in A) as a function of hyperpolarization amplitude in response to 2000 μm spots (n = 25). The ratio of depolarization to hyperpolarization (Depol./Hyperpol.) is constant across all response amplitudes.