Exam 3: Functional Architecture of the Visual Cortex

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When simultaneously recording from two cells in separate ocular dominance columns in V1, you notice that the firing patterns of these two cells are remarkably similar. What does this suggest?

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Question 1

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Briefly describe the arrangement of cells in the lateral geniculate nucleus and describe their output.

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In primates, including humans, geniculate layers 6, 4, and 1 are supplied by the contralateral eye, while layers 5, 3, and 2 are supplied by the ipsilateral eye. Cells in layers 1 and 2 are termed Magnocellular, as they are larger than parvocellular cells in layers 3-6.

While recording from a cell in V1, you find that a cell responds best to a horizontal bar of light presented to the left eye, and that it responds better when the cell is green than when it is red. Which of the following structures are you most likely recording from?

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Each layer of the lateral geniculate nucleus receives information from

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Question 4

Which visual analysis does not appear to be processed by cells in primary visual cortex?

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Question 5

Cells in the deep layers (layers 1 and 2) of the lateral geniculate nucleus are characteristically

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Question 6

Generally, cellular processes (axons and dendrites) in primary visual cortex lie

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Question 7

Cells from blobs in primary visual cortex project to which of the following structures in V2?

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Question 8

Why is the representation of the fovea disproportionately larger than the periphery in the primary visual cortex?

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Question 9

Where do axons from LGN cells with receptive fields in the fovea lie within the primary visual cortex?

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Question 10

You are recording visual responses from a cell in V1, with a receptive field on the midline of the visual field. Next, you cool the fibers of the corpus callosum, inactivating them. What results would you expect to find? Why?

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Question 11

What is meant by "ocular dominance column"? Describe the arrangement of ocular dominance columns found in primary visual cortex.

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Question 12

How are the horizontal projections in V1 arranged? How do we know?

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Question 13

In the primary visual cortex, where are cells that represent the peripheral visual field found, compared to the representation of the fovea?

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Question 14

Cortico-cortical connections in V1 can extend far beyond the dimensions of a hypercolumn, suggesting that

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Question 15

When Hubel and Wiesel recorded from a column of cells in primary visual cortex, they found that all the cells

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Question 16

Cells that respond to a single orientation of light are arranged in

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Question 17

Which of the following structures appears to process motion information in the visual cortex?

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Question 18

Which results provide evidence for longitudinal connections among cells in V1?

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Question 19

Which structure is especially important for reconstructing the whole visual field after processing by primary visual cortex?

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Question 20

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Exam 3: Functional Architecture of the Visual Cortex

When simultaneously recording from two cells in separate ocular dominance columns in V1, you notice that the firing patterns of these two cells are remarkably similar. What does this suggest?

Briefly describe the arrangement of cells in the lateral geniculate nucleus and describe their output.

While recording from a cell in V1, you find that a cell responds best to a horizontal bar of light presented to the left eye, and that it responds better when the cell is green than when it is red. Which of the following structures are you most likely recording from?

Each layer of the lateral geniculate nucleus receives information from

Which visual analysis does not appear to be processed by cells in primary visual cortex?

Cells in the deep layers (layers 1 and 2) of the lateral geniculate nucleus are characteristically

Generally, cellular processes (axons and dendrites) in primary visual cortex lie

Cells from blobs in primary visual cortex project to which of the following structures in V2?

Why is the representation of the fovea disproportionately larger than the periphery in the primary visual cortex?

Where do axons from LGN cells with receptive fields in the fovea lie within the primary visual cortex?

You are recording visual responses from a cell in V1, with a receptive field on the midline of the visual field. Next, you cool the fibers of the corpus callosum, inactivating them. What results would you expect to find? Why?

What is meant by "ocular dominance column"? Describe the arrangement of ocular dominance columns found in primary visual cortex.

How are the horizontal projections in V1 arranged? How do we know?

In the primary visual cortex, where are cells that represent the peripheral visual field found, compared to the representation of the fovea?

Cortico-cortical connections in V1 can extend far beyond the dimensions of a hypercolumn, suggesting that

When Hubel and Wiesel recorded from a column of cells in primary visual cortex, they found that all the cells

Cells that respond to a single orientation of light are arranged in

Which of the following structures appears to process motion information in the visual cortex?

Which results provide evidence for longitudinal connections among cells in V1?

Which structure is especially important for reconstructing the whole visual field after processing by primary visual cortex?

Principles of Signaling and Organization

Signaling in the Visual System

Ion Channels and Signaling

Structure of Ion Channels

Ionic Basis of the Resting Potential

Ionic Basis of the Action Potential

Electrical Signaling in Neurons

Ion Transport Across Cell Membranes

Properties and Functions of Neuroglial Cells

Mechanisms of Direct Synaptic Transmission

Indirect Mechanisms of Synaptic Transmission

Release of Neurotransmitters

Neurotransmitters in the Central Nervous System

Transmitter Synthesis, Storage, Transport, and Inactivation

Synaptic Plasticity

The Molecular and Cellular Biology of Synaptic Plasticity

Mechanisms of Extrasynaptic Communication

Autonomic Nervous System

Walking, Flying, and Swimming: Cellular Mechanisms of Sensorimotor Behavior in Invertebrates

Sensory Transduction

Transduction and Transmission in the Retina

Touch, Pain, and Texture Sensation

Auditory and Vestibular Sensation

Constructing Perception

Initiation and Control of Coordinated Muscular Movements

Development of the Nervous System

Critical Periods in Sensory Systems

Regeneration and Repair of Synaptic Connections After Injury

Appendix

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