Visual Information Processing in the Retina

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What is the primary site of visual information processing?

Cornea

Retina (correct)

Optic nerve

Brain

What happens to the release of glutamate from rods and cones when light strikes them?

It stops altogether

It decreases (correct)

It remains the same

It increases

What is the role of horizontal cells in the retina?

To convert light into electrical signals

To carry signals from one rod or cone to other photoreceptors and to several bipolar cells (correct)

To amplify the signal from a single rod or cone

To transmit signals directly to the brain

What is the result of lateral inhibition in visual processing?

Sharpening edges and enhancing contrast in the image Signup and view all the answers

Where else does lateral inhibition occur in addition to the retina?

Brain Signup and view all the answers

What kind of synapses do rods and cones form with bipolar cells?

Chemical Signup and view all the answers

What triggers a change in the membrane potential of bipolar cells?

Hyperpolarization of rods and cones Signup and view all the answers

What is the function of horizontal cells in the retina?

To integrate signals from multiple photoreceptors Signup and view all the answers

What is the effect of light on the release of glutamate from rods and cones?

It decreases the release of glutamate Signup and view all the answers

What is the purpose of multiple pathways in the retina for processing visual information?

To enhance the contrast and sharpness of the image Signup and view all the answers

What is the effect of lateral inhibition on the image?

It enhances the contrast and sharpness of the image Signup and view all the answers

What is the role of bipolar cells in the retina?

To detect light and transmit signals to the brain Signup and view all the answers

What is the state of rods and cones in the dark?

Depolarized Signup and view all the answers

What is the result of the decrease in glutamate release from rods and cones?

A decrease in the membrane potential of bipolar cells Signup and view all the answers

What is the significance of multiple pathways in the retina for visual processing?

It allows for the integration of signals from multiple photoreceptors Signup and view all the answers

What is the result of a smaller receptive field?

A more precise image Signup and view all the answers

What is the receptive field defined by?

The array of rods and cones feeding information to one ganglion cell Signup and view all the answers

What is the effect of having fewer rods or cones supplying a single ganglion cell?

A smaller receptive field Signup and view all the answers

Which part of the visual field is defined by the receptive field?

The part of the visual field to which that ganglion cell can respond Signup and view all the answers

What is the advantage of a ganglion cell receiving information from fewer rods and cones?

It results in a sharper image Signup and view all the answers