035 On Center, Off Surround Ganglion Cells

In this episode, Leslie Samuel explains the concept of on-center off-surround ganglion cells. The video covers how rods connect to ganglion cells via bipolar and horizontal cells, forming the center and surround of the receptive field. The on-center response results in depolarization and nerve impulses, while the off-surround response leads to hyperpolarization and post-inhibitory rebound. The video also briefly mentions off-center on-surround ganglion cells, which exhibit opposite responses.

What does the letter 'R' stand for in the context of ganglion cell networks?

• Retina

• Rod

• Response

• Receptor

In the center configuration of a ganglion cell's receptive field, how are rods connected?

• Via bipolar cells to ganglion cells

• Directly to horizontal cells

• Via horizontal cells to bipolar cells

• Directly to ganglion cells

What happens to the membrane potential when rods in the center of the receptive field are stimulated?

• It hyperpolarizes

• It depolarizes

• It oscillates

• It remains unchanged

What is the term used for the burst of nerve impulses that occur after hyperpolarization?

• Pre-excitatory rebound

• Post-inhibitory rebound

• Pre-inhibitory rebound

• Post-excitatory rebound

Which cells are key in the off-surround response of ganglion cells?

• Bipolar cells

• Horizontal cells

• Rod cells

• Ganglion cells

What type of response is observed when the center of an off-center on-surround ganglion cell is stimulated?

• No response

• Hyperpolarization with post-inhibitory rebound

• Depolarization with nerve impulses

• Continuous depolarization

What is the response when the surround of an off-center on-surround ganglion cell is stimulated?

• Hyperpolarization

• Continuous hyperpolarization

• No change

• Depolarization with nerve impulses