Neurobiology Chapter 21 and 23 Questions and Answers

What is the "take-home" message being conveyed by this figure (Figure 3.10 on page Neighboring regions of cortex have cells that respond to similar orientations of edges, and as you move across the cortex the orientation that best active cells gradually changes such that these preferred orientations are slightly rotated from the orientations preferred by neighboring cells. The graph just uses color so that you can find which part of cortex responded to each edge orientation.

Click on any lateral geniculate neuron- the pink thing

What message is the image above (Figure 3.6B on page 48) NOT trying to convey?

Neurons in layer 4c of the striate cortex project to the upper layers (layers 2 and 3), but the neurons in these upper layers receive overlapping inputs from neurons representing the right and left visual fields.

Click on any visual cortical cell - the yellow thing

What is the image above (Figure 2.11 on page 34) trying to demonstrate?

Inputs from “Center on” lateral geniculate neurons are combined by the neurons in the striate cortex, making these neurons respond best to bars of light.

Click on the images depicting receptive fields of the LGN neurons – the charge box areas.

Which regions or visual fields project to the right striate cortex?

- The left half of the visual field

- The right (nasal) half of the left retina

- The right (temporal) half of the right retina

- The right lateral geniculate

Which regions or visual fields project to the left striate cortex?

- The right half of the visual field

- The left (nasal) half of the right retina

- The left (temporal) half of the left retina

- The left lateral geniculate

Which of the following receptive field types describe the receptive fields of neurons in the V1 region of the visual cortex?

- Simple bar or edge response

- Complex bar or edge response

Which of the following receptive field types describe the receptive fields of neurons in the Lateral Geniculate Nucleus (LGN) of...