Which cells mediate interactions between bipolar cells and ganglion cells?

Which cells mediate interactions between bipolar cells and ganglion cells?

• A. Horizontal cells
• B. Photoreceptors
• C. Müller glia
• D. Amacrine cells

Answer: (D)

Amacrine cells act as the interneurons that link bipolar cells to ganglion cells in the inner retina. They reside in the inner plexiform layer and provide inhibitory and modulatory inputs to ganglion cells, shaping how signals from bipolar cells are transformed into the final output that leaves the eye. This modulation is crucial for features like contrast, timing, and motion detection as signals pass from bipolar to ganglion cells. By contrast, horizontal cells operate in the outer retina between photoreceptors and bipolar cells; Müller glia are supportive glial cells; photoreceptors are the light-sensitive cells that feed the retinal circuit.

Amacrine cells act as the interneurons that link bipolar cells to ganglion cells in the inner retina. They reside in the inner plexiform layer and provide inhibitory and modulatory inputs to ganglion cells, shaping how signals from bipolar cells are transformed into the final output that leaves the eye. This modulation is crucial for features like contrast, timing, and motion detection as signals pass from bipolar to ganglion cells. By contrast, horizontal cells operate in the outer retina between photoreceptors and bipolar cells; Müller glia are supportive glial cells; photoreceptors are the light-sensitive cells that feed the retinal circuit.