Certain cells in the retina respond differently to the direction in which objects move. To understand how cells in the retina respond to different visual stimuli, the activity of a retinal ganglion cell was measured while a square moved across its visual field. Which statement best explains the increases in voltage during the periodic spikes?   A. Depolarization of a neuron past a threshold voltage causes sodium channels to close.   B. Depolarization of a neuron past a threshold voltage causes sodium channels to open.   C. Depolarization of a neuron past a threshold voltage causes potassium channels to close.   D. Depolarization of a neuron past a threshold voltage causes potassium channels to open.

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A:

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Q: Based on the attached figure (Figure 9.8 in the textbook), what is the actual membrane mechanism…

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A:

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Q: A cortical module found in the visual cortex represents what type of visual information? a. All of…

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Q: Which of the following changes to an action potential indicates a larger stimulus?  a. Increased…

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