Question 1

What composes the M pathway in the lateral geniculate nucleus?

Accepted Answer

The M pathway in the lateral geniculate nucleus is composed of magnocellular neurons and the axons of the retinal ganglion cells that synapse on them. This pathway is involved in processing motion and spatial information.

Question 2

What are the two functional systems present in the V4 complex?

Accepted Answer

The V4 complex is known for its involvement in processing color and spatial orientation, making it crucial for visual perception and recognition.

Question 3

Which of the following is false regarding the posterior parietal lobes?

Accepted Answer

The posterior parietal lobes are not primarily responsible for perceiving figure-ground separation; this function is more associated with the visual cortex.

Question 4

The "real or not" test where a person is presented with line drawings of objects or animals and is asked to identify whether the drawing represents a plausible object or not, is a test used to help diagnose___________.

Accepted Answer

Associative visual agnosia is a condition in which a person can see an object but cannot recognize it. The "real or not" test is used to help diagnose this condition because people with associative visual agnosia will often be unable to identify whether a drawing represents a plausible object or not.

Question 5

There is an interesting exception to the living/nonliving dichotomy that is often observed in category specific visual agnosia. Individuals who demonstrate selective difficulties in naming living things also tend to exhibit deficits in which of the following categories?

Accepted Answer

The answer of There is an interesting exception to the...

Question 6

The loss of knowledge about colour that cannot be accounted for by an impairment of colour discrimination, aphasia, or some general intellectual deterioration is known as a condition called ___________.

Accepted Answer

Colour agnosia is the correct term for the condition where there is a loss of knowledge about colours that cannot be explained by an impairment of colour discrimination, aphasia, or general intellectual deterioration. This condition specifically refers to the inability to recognize or identify colours despite having the physical ability to perceive them.

Question 7

What is the form of associative visual agnosia in which individuals display symptoms within a class of visual stimuli (such as an inability to name nonliving objects, such as a calculator)?

Accepted Answer

Category-specific visual agnosia is a condition where the individual has difficulty recognizing and naming objects within a specific category, such as nonliving objects, while retaining the ability to recognize objects outside of that category.

Question 8

The cells in the eye that first receive incoming light are the ___________.

Accepted Answer

The answer of The cells in the eye that first...

Question 9

Which of the following statements is a false characteristic of cone receptors?

Accepted Answer

Cone receptors are not sensitive to small fluctuations in light; this characteristic is more accurately attributed to rod receptors, which are highly sensitive to low light levels and are responsible for night vision. Cone receptors, on the other hand, function best in bright light and are responsible for high-acuity vision and color perception.

Question 10

Which of the following statements about the primary sensory cortex is false?

Accepted Answer

All the statements about the primary sensory cortex are true. It receives sensory information relayed from the senses through the thalamus, has direct access to sensory information, and sends information to secondary sensory areas.

Question 11

The areas of sensory systems are very interconnected with each other both within and between levels. This sort of organization leads to___________.

Accepted Answer

The interconnectedness of sensory systems across different levels allows for a distribution of processing tasks, reducing the system's dependence on any single level. This organization enhances the system's efficiency and flexibility in processing sensory information.

Question 12

What is the role of receptors in the eye?

Accepted Answer

Receptors in the eye, specifically photoreceptor cells (rods and cones), are responsible for converting light energy into neural responses. This process is known as phototransduction, where light photons are converted into electrical signals that can be interpreted by the brain.

Question 13

Sides of the retina are referred to either as nasal or temporal. Nasal is___________where temporal is___________.

Accepted Answer

The nasal side of the retina is closest to the nose, while the temporal side is closest to the temples. This terminology is based on the relative positions of these parts of the retina to these facial features.

Question 14

Which of the following statements is correct?

Accepted Answer

The P (parvocellular) pathway is associated with high-resolution vision and color, primarily receiving input from cones.

Question 15

From which does V4 receive information in the visual system?

Accepted Answer

V4 receives information from multiple sources in the visual system, including V3, V2, and the lateral geniculate nucleus, making all of the options correct.

Question 16

There are two functional systems within the V4 complex. What are these systems?

Accepted Answer

The V4 complex in the brain is known to have two functional systems: a color-selective system, which is involved in processing color information, and a spatial/orientation-sensitive system, which is involved in processing the spatial orientation of objects.

Question 17

The neurons in the inferior temporal cortex…

Accepted Answer

The neurons in the inferior temporal cortex are known for their role in object recognition and are characterized by their selective response to complex objects, such as faces or hands. They maintain this selectivity regardless of changes in the object's position, size, or orientation, distinguishing them from neurons in earlier visual processing areas that are more sensitive to such changes.

Quiz 6: Sensation and Perception: Vision