Question 1

It appears that there are five primary tastes including

Accepted Answer

A)   acid, bitter, and origami.
B)   Sweet, juicy, and dry.
C)   Sour, bitter, and cold.
D)   Sweet, sour, and umami.E) A) and D)
F) None of the above

Question 2

Why do you have better color vision in the fovea than in the periphery of the retina?

Accepted Answer

A)   More receptors pool their resources to excite the next cell near the fovea than in the periphery.
B)   The fovea has a higher proportion of cones than the periphery does.
C)   The eyeball is more spherical near the fovea than in the periphery.
D)   The periphery is in the shadow of the pupil.E) A) and B)
F) A) and C)

Question 3

A stimulus so weak that a person can detect its presence only 50% of the time is a stimulus at the

Accepted Answer

A)   absolute sensory threshold.
B)   subliminal level.
C)   apex.
D)   Gestalt level.E) None of the above
F) C) and D)

Question 4

If you rub capsaicin (the chemical that makes jalapeno peppers taste hot)  onto your sore leg, the probable result will be

Accepted Answer

A)   a temporary burning sensation followed by a prolonged decrease in pain.
B)   a temporary burning sensation followed by an increase in pain.
C)   a numb feeling on and around the rubbed area.
D)   a loss of muscle strength in the leg.E) B) and C)
F) All of the above

Question 5

Animal species with good color vision (such as most birds)  generally have

Accepted Answer

A)   a relatively elongated eyeball.
B)   a relatively flattened eyeball.
C)   a high percentage of cones in the retina.
D)   a high percentage of rods in the retina.E) C) and D)
F) None of the above

Question 6

Someone who has been red-green color-blind in both eyes throughout his or her lifetime would describe a red rose as looking

Accepted Answer

A)   blue.
B)   green.
C)   yellow.
D)   red.E) A) and D)
F) All of the above

Question 7

Closing the pain gates would be most expected following an increase in which of the substances below?

Accepted Answer

A)   substance P
B)   capsaicin
C)   endorphin
D)   naloxoneE) B) and C)
F) A) and B)

Question 8

We identify the direction of a source of sound by attending to the

Accepted Answer

A)   difference between responses from the left ear and those from the right ear.
B)   velocity of impulses coming from hair cells in the basilar membrane.
C)   changes in loudness from the beginning of the sound to the end of the sound.
D)   difference between the responses of hair cells at the stirrup end of the basilar membrane and responses of hair cells at other locations.E) A) and D)
F) A) and C)

Question 9

Why does a mosquito bite itch?

Accepted Answer

A)   This is similar to a placebo effect-you expect it to itch, so it does.
B)   Pain receptors are stimulated, because itch is a type of pain.
C)   Injured tissues release the chemical histamine, which causes an itching sensation.
D)   Receptors in the vestibular sense become active, and this is experienced as an itching sensation.E) C) and D)
F) All of the above

Question 10

What is a pheromone?

Accepted Answer

A)   a chemical that the brain uses for metabolic energy
B)   a chemical released by a gland that affects other parts of the body
C)   a chemical released by one animal that affects the social behavior of other animals
D)   a chemical released at the end of an axon that alters the activity of the next cellE) None of the above
F) B) and D)

Question 11

Motion pictures are actually a series of still photos, each slightly different from the last. Our tendency to perceive them as moving is an example of

Accepted Answer

A)   retinal disparity.
B)   subliminal perception.
C)   motion parallax.
D)   stroboscopic movement.E) A) and D)
F) All of the above

Question 12

Which of the following is a binocular cue to depth perception?

Accepted Answer

A)   relative sizes of objects
B)   shadows
C)   retinal disparity
D)   motion parallaxE) None of the above
F) A) and B)

Question 13

The number of types of cones (responsible for different wavelengths)  is __________. The number of types of olfactory receptors is __________.

Accepted Answer

A)   five...seven
B)   five...hundreds
C)   three...seven
D)   three...hundredsE) C) and D)
F) All of the above

Question 14

The optic nerve is composed of axon fibers from

Accepted Answer

A)   ganglion cells.
B)   both cones and rods.
C)   cones.
D)   rods.E) A) and D)
F) A) and B)

Question 15

Which part of the human retina has the best color vision?

Accepted Answer

A)   the area surrounding the optic nerve
B)   the fovea
C)   the periphery
D)   the corneaE) None of the above
F) B) and C)

Question 16

When clouds move across the moonlit sky, the moon appears to move and the clouds appear to be stationary. This is an example of

Accepted Answer

A)   the moon illusion.
B)   induced movement.
C)   perceptual constancy.
D)   the phi effect.E) A) and D)
F) A) and B)

Question 17

Three semicircular canals and two otolith organs make up the

Accepted Answer

A)   olfactory system.
B)   gustatory system.
C)   vestibular system.
D)   somatosensory system.E) All of the above
F) None of the above

Question 18

What do we know about the taste of MSG (monosodium glutamate) ?

Accepted Answer

A)   It weakens as it comes into contact with the tongue.
B)   It appears to be one of the primary tastes.
C)   It causes taste buds to release substance P and therefore causes foods to taste "hot."
D)   It causes sweet substances to taste sour and causes sour substances to taste sweet.E) A) and D)
F) B) and C)

Question 19

By what means do we perceive the pitch of a high-frequency sound (such as 10,000 Hz) ?

Accepted Answer

A)   A sound wave of a particular frequency (such as 10,000 Hz)  excites that many hair cells (10,000) .
B)   Each hair cell sends one impulse for each sound wave.
C)   A sound wave of a particular frequency excites hair cells at a particular location along the basilar membrane.
D)   Each sound wave excites a group, or volley, of hair cells.E) A) and C)
F) C) and D)

Question 20

Which of the following experiments attempts to demonstrate the presence of feature detectors in the visual cortex of the human brain?

Accepted Answer

A)   People are given rewards and punishments when detecting faint stimuli.
B)   People stare at bars of one width for a minute and then check whether their perception of other bars has changed.
C)   People sit in a dark room for various periods of time and then check their ability to detect a dim light.
D)   People look at a piece of paper with two dots on it and move it back and forth trying to find their blind spot.E) All of the above
F) A) and B)

Exam 4: Sensation and Perception

If you rub capsaicin (the chemical that makes jalapeno peppers taste hot) onto your sore leg, the probable result will be

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What is a pheromone?

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Which of the following is a binocular cue to depth perception?

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By what means do we perceive the pitch of a high-frequency sound (such as 10,000 Hz) ?

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We identify the direction of a source of sound by attending to the

Correct AnswerverifiedShow Answer

When clouds move across the moonlit sky, the moon appears to move and the clouds appear to be stationary. This is an example of

Correct AnswerverifiedShow Answer

What do we know about the taste of MSG (monosodium glutamate) ?

Correct AnswerverifiedShow Answer

Three semicircular canals and two otolith organs make up the

Correct AnswerverifiedShow Answer

Someone who has been red-green color-blind in both eyes throughout his or her lifetime would describe a red rose as looking

Correct AnswerverifiedShow Answer

The number of types of cones (responsible for different wavelengths) is __________. The number of types of olfactory receptors is __________.

Correct AnswerverifiedShow Answer

Animal species with good color vision (such as most birds) generally have

Correct AnswerverifiedShow Answer

Which of the following experiments attempts to demonstrate the presence of feature detectors in the visual cortex of the human brain?

Correct AnswerverifiedShow Answer

It appears that there are five primary tastes including

Correct AnswerverifiedShow Answer

The optic nerve is composed of axon fibers from

Correct AnswerverifiedShow Answer

Why do you have better color vision in the fovea than in the periphery of the retina?

Correct AnswerverifiedShow Answer

Motion pictures are actually a series of still photos, each slightly different from the last. Our tendency to perceive them as moving is an example of

Correct AnswerverifiedShow Answer

A stimulus so weak that a person can detect its presence only 50% of the time is a stimulus at the

Correct AnswerverifiedShow Answer

Which part of the human retina has the best color vision?

Correct AnswerverifiedShow Answer

Closing the pain gates would be most expected following an increase in which of the substances below?

Correct AnswerverifiedShow Answer

Why does a mosquito bite itch?

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The number of types of cones (responsible for different wavelengths) is . The number of types of olfactory receptors is .

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