Which cells are responsible for the d-wave?

Test your knowledge on photoreceptors. Use flashcards and multiple-choice questions, each with hints and explanations. Prepare for your test with confidence!

Multiple Choice

Which cells are responsible for the d-wave?

Explanation:
The d-wave is the off-response that appears after a light flash ends, and under bright (photopic) conditions it is driven mainly by the cone pathway. In these conditions, the rod system is saturated and does not contribute to this late response, so the signal comes from cones and the cone-driven OFF bipolar cells that connect to the inner retina. Cone photoreceptors respond to the cessation of light in a way that propagates through the cone OFF bipolar cells, shaping the d-wave, with amacrine cells helping refine the waveform but not being the primary generators. Therefore, the cells principally responsible are cones and cone bipolar cells.

The d-wave is the off-response that appears after a light flash ends, and under bright (photopic) conditions it is driven mainly by the cone pathway. In these conditions, the rod system is saturated and does not contribute to this late response, so the signal comes from cones and the cone-driven OFF bipolar cells that connect to the inner retina. Cone photoreceptors respond to the cessation of light in a way that propagates through the cone OFF bipolar cells, shaping the d-wave, with amacrine cells helping refine the waveform but not being the primary generators. Therefore, the cells principally responsible are cones and cone bipolar cells.

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