In the visual pathway providing sensory action potentials to the brain,the first cells which are capable of initiating action potentials are

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Ganglion cells are the first cells in the visual pathway capable of initiating action potentials. Rods and cones, the photoreceptor cells, respond to light and synapse onto bipolar cells, which then synapse onto ganglion cells. It is the ganglion cells that generate action potentials and transmit visual information to the brain via the optic nerve.

In the Visual Pathway Providing Sensory Action Potentials to the Brain,the