Deck 19: Sensation and Perception: Vision

Question 1

Within one's eye,the light­sensitive cells are called

A)photoreceptors.
B)phosphenes.
C)tympanics.
D)stereocilia.

Answer 1

A

Question 2

Visible light starts at the "short" wavelengths,which we sense as

A)red.
B)green.
C)yellow.
D)purple.

Answer 2

D

Question 3

The dimension of vision which corresponds to the amplitude of light waves is

A)hue.
B)brightness.
C)transparency.
D)timbre.

Answer 3

B

Question 4

Light waves of greater amplitude cause colors to appear

A)dull or "washed out."
B)brighter.
C)saturated.
D)transparent.

Question 5

White light is

A)made up of the longest wavelengths.
B)made up of the shortest wavelengths.
C)a mixture of many wavelengths.
D)the absence of any wavelength.

Question 6

The area of the eye,which is about the size and thickness of a postage stamp and converts light energy into nerve impulses,is called the

A)cornea.
B)iris.
C)lens.
D)retina.

Question 7

The layer of light-sensitive pixels in the digital image sensor of a camera is analogous to the layer of photoreceptors in which area of the eye?

A)retina
B)iris
C)lens
D)pupil

Question 8

The basic color categories of red,orange,yellow,green,etc.refer to

A)saturation.
B)brightness.
C)hue.
D)color accommodation.

Question 9

We sense the longest wavelengths of visible light as the color

A)white.
B)purple.
C)red.
D)violet.

Question 10

The visible spectrum is is made up of a narrow range of wavelengths of

A)spectral particles.
B)ionized nanometers.
C)phosphenes.
D)electromagnetic radiation.

Question 11

The spread of electromagnetic energies to which the eyes respond is called the

A)perceptual field.
B)gamma quadrant.
C)visible spectrum.
D)spectral composite.

Question 12

Visible light is made up of electromagnetic radiation with wavelengths of
A)300-800 decibels.

A)400-700 nanometers.
B)20 to 20,000 C.P.S.
B)20 to 20,000 hectometers.

Question 13

Saturated or pure hues are produced by which type of wavelengths?

A)wide band
B)narrow band
C)combination
D)high amplitude

Question 14

Compared to a muddy brick red,a fire-engine red is said to be more

A)assimilated.
B)aqueous.
C)saturated.
D)accommodated.

Question 15

Which of the following cause the colors we see to appear brighter or more intense?

A)narrow bands of wavelengths
B)broad bands of wavelengths
C)waves of greater amplitude
D)waves of lower amplitude

Question 16

Humans respond to different wavelengths of light by experiencing differing

A)hues.
B)levels of brightness.
C)amounts of saturation.
D)amplitudes.

Question 17

Brightness refers to the

A)basic color categories.
B)pureness of color.
C)amplitude of light.
D)perception of meaningful patterns.

Question 18

Within one's eye,the light­sensitive cells are located in the

A)retina.
B)cornea.
C)lens.
D)iris.

Question 19

The function of the lens is to

A)locate an image.
B)focus an image on the retina.
C)combine the location and projection on the blind spot.
D)project an image on the cornea.

Question 20

Hue refers to the

A)basic color categories.
B)pureness of color.
C)amplitude of light.
D)perception of meaningful patterns.

Question 21

Myopia is the condition of the eyes in which the person cannot

A)focus on distant objects.
B)see very well in dim illumination.
C)focus on objects near the eyes.
D)see clearly because the lens is pigmented.

Question 22

You focus a camera by changing the distance between the lens and the image sensor.Similarly,your eye's focal point changes through the process called

A)accommodation.
B)assimilation.
C)sensory adaptation.
D)sensory gating.

Question 23

Jeremy who sits in the back of the seventh grade classroom,has no trouble reading the words in his textbook,but he is having difficulty reading the words that the teacher is writing on the board or seeing the images on the projection screen.Jeremy most likely has which vision problem?

A)hyperopia
B)astigmatism
C)presbyopia
D)myopia

Question 24

Most of the focusing is done at the front of the eye by a clear membrane that bends light inward.This membrane is called the

A)lens.
B)iris.
C)cornea.
D)pupil.

Question 25

If your eyeball is too long,the resulting condition is called

A)farsightedness.
B)presbyopia.
C)astigmatism.
D)nearsightedness.

Question 26

When the cornea or lens of the eye is misshapen so that part of the visual field will be focused and part will be fuzzy,the condition is called

A)hyperopia.
B)myopia.
C)retinitis.
D)astigmatism.

Question 27

Fourteen-year-old Jessica can see distance objects very clearly,but the words in the textbook she is reading appear blurry.She most likely has which visual problem?

A)myopia
B)hyperopia
C)astigmatism
D)presbyopia

Question 28

Carmen has fuzzy vision because her eyeball is too long.Carmen has the condition called

A)hyperopia.
B)myopia.
C)astigmatism.
D)presbyopia.

Question 29

A visual defect known as astigmatism is the result of

A)one's eyeball being too short.
B)one's eyeball being too long.
C)an abnormal distribution of visual receptors in the retina.
D)a misshapen cornea or lens.

Question 30

The clear membrane that covers the outside of the eye and helps gather and bend light inward is called the

A)pupil.
B)iris.
C)cornea.
D)retina.

Question 31

The process in which the eye's focal point changes as the muscles attached to the lens alter its shape is referred to as

A)assimilation.
B)accommodation.
C)perception.
D)transduction.

Question 32

If your eyeball is too short,the resulting condition is called

A)farsightedness.
B)presbyopia.
C)astigmatism.
D)nearsightedness.

Question 33

The scientific term for farsightedness is

A)hyperopia.
B)myopia.
C)retinitis.
D)astigmatism.

Question 34

Muscles attached to which of part of the eye alter its shape and change the eye's focal point?

A)lens.
B)fovea.
C)retina.
D)pupil.

Question 35

Most of the focusing is done at the front of the eye by the cornea,with additional,smaller adjustments being made by the

A)lens.
B)iris.
C)retina.
D)pupil.

Question 36

Hyperopia is the condition of the eyes in which the person cannot

A)focus on distant objects.
B)see very well in dim illumination.
C)focus on objects near the eyes.
D)see clearly because the lens is pigmented.

Question 37

Visual problems such as nearsightedness,farsightedness,and astigmatism are the result of

A)irregularities in the visual cortex.
B)nutritional or traumatic damage to the sensory nerves.
C)physical abnormalities in the structure of the eye.
D)defective processing of sensory information in the visual cortex.

Question 38

The scientific term for nearsightedness is

A)hyperopia.
B)myopia.
C)astigmatism.
D)presbyopia.

Question 39

Marty has fuzzy vision because his eyeball is too short.Marty has the condition called

A)hyperopia.
B)presbyopia.
C)myopia.
D)astigmatism.

Question 40

Brenda has no difficulty reading a book in front of her but is unable to read street signs from a distance.She probably has

A)hyperopia.
B)myopia.
C)astigmatism.
D)presbyopia.

Question 41

The blind spot is formed

A)by an abnormally shaped eyeball.
B)where the cornea and lens are connected.
C)where the optic nerve leaves the eye.
D)when a person has brain damage.

Question 42

Numbering about 120 million in each eye,which receptor cells allow us to see in dim light and are responsible for our seeing black and white images?

A)phosphenes
B)rods
C)cones
D)stereocilia

Question 43

As people age,which part of the eye becomes less flexible and less able to accommodate?

A)fovea
B)retina
C)lens
D)iris

Question 44

Numbering about five million in each eye,which receptor cells produce color sensations and work best in bright light?

A)phosphenes
B)rods
C)cones
D)stereocilia

Question 45

The eye has two types of "image sensors," consisting of receptor cells called the

A)iris and pupil.
B)lens and pupil.
C)cornea and the ciliary muscles.
D)rods and cones.

Question 46

The part of the retina where there are no rods or cones is called the

A)iris.
B)pupil.
C)fovea.
D)blind spot.

Question 47

Presbyopia is a condition of the eyes caused by aging in which the person cannot

A)focus on distant objects.
B)see very well in bright illumination.
C)focus on objects near the eyes.
D)see clearly because the lens is pigmented.

Question 48

Forty-six-year-old Debbie can clearly read the highway signs as she drives,but for the first time in her life,she is having trouble reading the words and numbers in the phone book.Debbie most likely has which vision problem?

A)myopia
B)hyperopia
C)astigmatism
D)presbyopia

Question 49

Michael just turned 45 and is getting glasses for the first time because he has difficulty reading newspapers,telephone books,and the instructions on medicine bottles.His eye doctor diagnosed his vision problem as

A)hyperopia.
B)myopia.
C)astigmatism.
D)presbyopia.

Question 50

Bifocal lenses are used to correct

A)near vision.
B)distance vision.
C)presbyopia.
D)both near vision and distance vision.

Question 51

The type of visual defect that a person experiences with presbyopia is similar to that of a person with

A)color blindness.
B)astigmatism.
C)myopia.
D)hyperopia.

Question 52

The cones of the retina

A)number about five million in each human eye.
B)are specialized for seeing black and white sensations.
C)occur most commonly in the periphery of the retina.
D)allow us to see in dim light.

Question 53

Hyperopia,myopia,and astigmatism can be corrected by placing glasses or contact lenses

A)in front of the eye to change the path of light.
B)over the image in order to magnify the image.
C)in front of the eye to make the cones more sensitive to light.
D)in front of the eye to make the rods more sensitive to light.

Question 54

As Karen reads her psychology textbook,the words on the page seem to be focused and then become fuzzy.After an hour of struggling to read her textbook with some of the words in focus and other not,she has developed a severe headache.When her eye doctor examines her eyes,he finds that her lenses are misshapen.Karen has which visual problem?

A)myopia
B)hyperopia
C)astigmatism
D)presbyopia

Question 55

Which of the following terms comes from the Latin word for "old vision" and refers to farsightedness due to aging?

A)hyperopia
B)myopia
C)presbyopia
D)astigmatism

Question 56

The part of the eye where the optic nerve leaves the eye is called the

A)lens.
B)retina.
C)blind spot.
D)pupil.

Question 57

The presence of which of the following parts of the retina shows that vision depends greatly on the visual cortex of the brain actively filling in the gap with patterns from surrounding areas?

A)iris
B)pupil
C)fovea
D)blind spot

Question 58

As people become middle-aged,the lens of the eye becomes less flexible and less able to accommodate,resulting in a farsightedness due to aging known as

A)hyperopia.
B)myopia.
C)presbyopia.
D)astigmatism.

Question 59

Regarding the retina,which of the following statements is FALSE?

A)The retina consists of many more cones than rods.
B)The retina is an area about the size and thickness of a postage stamp.
C)Only about half of the light falling on the front of the eye ever reaches the rods and cones in the retina.
D)The part of the eye where the optic nerve leaves the eye contains no rods or cones and is known as the blind spot.

Question 60

The area known as the blind spot is so named because

A)nerve cells have been permanently damaged.
B)a person no longer has peripheral vision.
C)there are no photoreceptors in this area.
D)there is no activity in the fovea.

Question 61

When you see colors and bright light,you are using the visual receptors known as

A)rods.
B)cones.
C)phosphenes.
D)stereocilia.

Question 62

The visual receptors that are used under dim light and produce only black and white sensations are the

A)rods.
B)cones.
C)phosphenes.
D)stereocilia.

Question 63

In bright light,visual acuity is greatest when the visual image falls on the

A)cornea.
B)fovea.
C)blind spot.
D)periphery of the retina.

Question 64

Sam is being administered a test known as the Landolt rings.Which aspect of Sam's vision is being assessed?

A)night vision
B)visual acuity
C)color vision
D)depth perception

Question 65

Visual acuity refers to which aspect of vision?

A)sharpness
B)brightness
C)color distinctions
D)depth perception

Question 66

Which of the following is NOT a test of visual acuity?

A)being able to detect a smallest grating seen as individual lines
B)the Snellen chart
C)the Landolt rings
D)the Ishihara test

Question 67

The cones of the retina

A)are responsible for peripheral vision.
B)are specialized for color sensations and fine details.
C)function best in dim light conditions.
D)are much more sensitive to light than the rods are.

Question 68

The rods of the retina

A)number about 120 million in each eye and are found mainly in the periphery of the eye.
B)are specialized for color sensations and detecting fine details.
C)function best in bright light.
D)are characterized by all of these.

Question 69

Black and white vision with the greatest sensitivity under lower levels of illumination describes the function of the

A)cones.
B)rods.
C)phosphenes.
D)visual pigments.

Question 70

The Snellen and the Landolt rings are used to assess

A)night vision.
B)visual acuity.
C)color vision.
D)depth perception.

Question 71

The small cup-shaped area in the middle of the retina that contains only cones is the

A)fovea.
B)cornea.
C)blind spot.
D)lens.

Question 72

Which receptor cells produce color sensations and fine details,work best in bright light,and lie mainly at the center of the eye?

A)phosphenes
B)rods
C)cones
D)stereocilia

Question 73

Like high-resolution digital sensors that are made of many small pixels,the tightly packed cones in which part of the eye produce the sharpest images?

A)iris
B)pupil
C)cornea
D)fovea

Question 74

Jake is being administered a test of his visual acuity in which he will be required to read rows of letters of diminishing size until he can no longer distinguish them.Jake's visual acuity is being assessed using the

A)Refraction Test.
B)Ishihara test.
C)Landolt rings.
D)Snellen chart.

Question 75

The rods of the retina

A)are densely packed in an area called the fovea.
B)are specialized for color sensations.
C)function best in dim light.
D)are specialized for picking up on fine detail.

Question 76

Damage to the fovea in each eye could be expected to impair one's

A)visual acuity.
B)peripheral vision.
C)night vision.
D)black-and-white vision.

Question 77

A receiver runs down field,turns,and focuses on the tiny "missile" spiraling down to him.This receiver's ability to see the football emphasizes his excellent visual acuity due to the fovea of his eyes having a large concentration of

A)rods.
B)cones.
C)phosphenes.
D)stereocilia.

Question 78

If you have 20/20 visual acuity,then you have

A)myopia.
B)hyperopia.
C)astigmatism.
D)normal vision.

Question 79

Visual acuity is sharpest when images are focused on the fovea because there is a high concentration of which of the following in this region?

A)rods
B)cones
C)ganglion cells
D)bipolar cells

Question 80

Normal visual acuity is designated as vision.

A)20/100
B)20/40
C)20/20
D)20/10