Cog Neuro Quiz 4: Sensation & Perception

Question 1

T or F? The cornea and lens are the main refractive surfaces of the eye

Answer 1

True

Question 2

T or F? Cones contribute to color vision, rods do not

Answer 2

True

Question 3

T or F? There are a greater number of M compared to P ganglion cells

Answer 3

False

Question 4

T or F? The tectopulvinar system is for conscious visual processing

Answer 4

False

Question 5

T or F? The eardrum vibrates at the frequencies of sound waves that enter the ear

Answer 5

True

Question 6

T or F? The ossicles are three small bones located in the outer ear

Answer 6

False (inner ear)

Question 7

T or F? The organ of corti is located inside of the cochlea

Answer 7

True

Question 8

T or F? Inner hair cells alter the amount of tension on the tectorial membrane

Answer 8

False

Question 9

To take this quiz, you must read and process the information. The ability to organize the black marks on the paper into meaningful patterns involves the subjective process of..

Answer 9

Perception

Question 10

To take this quiz, you must read and process the information. The initial step of your eyes detecting the black marks on the page depends on the process of…

Answer 10

Sensation

Question 11

Rods are more sensitive to light, while cones are better at detecting fine detail. Which of the following concepts helps explain this difference?

Answer 11

Convergance

Question 12

Information from the rods is carried to the _____ of the thalamus by the _______ ganglion

Answer 12

LGN; M

Question 13

Low frequencies cause maximal displacement at the apex of the _____

Answer 13

Basilar Membrane

Question 14

Movement in the direction of the tallest cilia of our inner hair cells results in ______, which leads to firing in the auditory nerve

Answer 14

depolarization

Question 15

Karen was an avid hunter, but rarely wore ear protection when firing her rifle. Lately, she has noticed that she cannot hear certain high frequencies at all, and others sound muffled. Which part of her auditory system is most likely damaged from repeated exposure to loud noises?

Answer 15

Inner hair cells

Question 16

What type of hearing loss is Karen, the avid hunter, experiencing?

Answer 16

Sensorineural

Question 17

The image created on the retina is upside-down and left/right inverted due to how the cornea and lens bend light. We don’t perceive the world as upside down because the brain flips the image. Why does the brain flip the image back instead of keeping it upside down and left/right inverted?

Answer 17

The brain flips the image back so that we can process the information correctly and guide our movement.

Question 18

Each eye has a nasal retina/path and a temporal retina/path. How do they differ?

Answer 18

Nasal crosses to opposite lens and temporal does not.

Question 19

Is the figure below illustrating what happens when light is present or absent?

Answer 19

Light is present because the end result is Bipolar cell is depolarized. and glutamate increases

Question 20

Two patients who have had strokes enter your office. You show them three objects: a pen, a phone, and a watch. Both patients can see the objects in front of them. Patient A does not recognize the objects’ names or uses. Patient B correctly tells you what each object does but cannot identify the names.

Which of the two main visual systems/pathways are involved in both patients’ symptoms: geniculostriate or tectopulvinar?

Which visual stream is affected in each patient: dorsal or ventral?

Answer 20

• geniculostriate system
• both patients affected by ventral stream