Deck 4: True-False

Question 1

Although the term used is "absolute threshold," 50% of the time a signal at this level goes undetected.

Answer 1

True

Question 2

The length of a light wave determines the brightness we perceive.

Answer 2

False

Question 3

The length of a light wave determines the color we perceive.

Answer 3

True

Question 4

Radiologists attempting to determine if a growth is cancerous probably will adopt a liberal decision criterion.

Question 5

You can easily tell the difference between 1 and 2 pounds,but not 200 and 201 pounds,illustrating Weber's Law.

Question 6

The field of psychophysics is primarily concerned with developing scales to measure the intensity of a stimulus.

Question 7

Although the just-noticeable difference is known to be a fixed quantity,the actual value of this quantity is different for each sense.

Question 8

You can easily tell the difference between 1 and 2 pounds,but not 200 and 201 pounds,illustrating an absolute threshold for perceiving differences in weight.

Question 9

The field of psychophysics was developed by Wilhelm Wundt.

Question 10

Perception does not begin until transduction has occurred.

Question 11

Sensation and perception are related,but separate,events.

Question 12

The field of psychophysics was developed by Gustav Fechner.

Question 13

Research on cell phone use and attention in driving suggests that laws requiring hands-free cell phones could significantly reduce accidents.

Question 14

An organism's sensitivity to prolonged stimulation tends to increase over time.

Question 15

Our senses will adapt more quickly to a stimulus if that stimulus is presented occasionally,rather than constantly.

Question 16

Signal detection accounts of perception assume the existence of thresholds.

Question 17

Transduction occurs for every sense EXCEPT that of smell.

Question 18

Sensation and perception occur simultaneously.

Question 19

Stimulation below our absolute threshold will never be detected.

Question 20

The sensory threshold of being able to detect a teaspoon of sugar dissolved in 2 gallons of water is an example of a difference threshold.

Question 21

LASIK surgery involves physically reshaping the lens.

Question 22

The blind spot is an area of the retina that lacks both rods and cones.

Question 23

With respect to light,purity refers to the number of distinct wavelengths that make up the light.

Question 24

Cones are much more sensitive to low levels of light than are rods.

Question 25

The lens focuses light on the area of the retina known as the optic nerve.

Question 26

The size of the pupil is controlled by the iris.

Question 27

The lateral geniculate nucleus is contained in area V1 of the occipital tract.

Question 28

Visual information passes through the thalamus before reaching area VI.

Question 29

Visual acuity is best when light is projected onto the optic nerve.

Question 30

There are more rods than there are cones in the retina.

Question 31

The axons of retinal ganglion cells form the optic nerve.

Question 32

The process by which the lens changes shape in order to focus light on the retina is termed phototransduction.

Question 33

The area of the occipital lobe that contains the primary visual cortex is termed area V1.

Question 34

Red is to violet as a loud sound is to a soft sound.

Question 35

A vivid color is to a pastel color as a high-pitched sound is to a low-pitched sound.

Question 36

The amplitude of a light wave determines its purity or richness of color.

Question 37

Nearsightedness (myopia)results when images are focused in front of the retina.

Question 38

The colored portion of the outer eye is called the cornea.

Question 39

When you walk into a dark movie theater,you depend on the cones in your retina to help you find your way to an empty seat.

Question 40

Red is to violet as a high-pitched sound is to a low-pitched sound.

Question 41

Someone who cannot recognize familiar faces may have suffered damage in the ventral stream of visual processing.

Question 42

A key feature of the color-opponent system is sensory adaptation.

Question 43

We perceive the shortest visible wavelengths as deep purple.

Question 44

Neurons in area VI are specialized for encoding edge orientation.

Question 45

When combining light,mixing a red spotlight and a green spotlight creates the perception of yellow light.

Question 46

We perceive the longest visible wavelengths as bright yellow.

Question 47

Men are more likely to be color-blind than are women.

Question 48

The dorsal visual stream sometimes is referred to as the "how pathway."

Question 49

The three primary colors of light are red,blue,and yellow.

Question 50

Color is a property of light.

Question 51

Red and yellow are opponent colors.

Question 52

Objects in the left visual field can only be detected by the left eye.

Question 53

Neurons in area VI are specialized for encoding the emotional meaning of a visual stimulus.

Question 54

What we perceive as the color white is really the absence of light waves.

Question 55

Someone with visual form agnosia might recognize an object as a pencil but will not be able to write with it.

Question 56

If you stare at something green for a long time and then look at a white surface,you will perceive the color red.

Question 57

The dorsal visual stream processes the shape and identity of an object.

Question 58

L-cones detect blue light.

Question 59

M-cones detect green light.

Question 60

An object presented in the right visual field ultimately will be processed in area V1 of the right occipital lobe.

Question 61

Parts-based object recognition theories argue that object recognition involves deconstructing objects into geons.

Question 62

Feature binding appears to occur primarily in the occipital lobe.

Question 63

Letter is to alphabet as geon is to parts inventory.

Question 64

Parts-based object recognition theories would have problems explaining how you can distinguish your yellow Labrador retriever from the neighbor's golden retriever.

Question 65

When confronted with two or more possible interpretations of an object's shape,we tend to perceive the simplest one.

Question 66

As attention to the task increases,the number of illusory conjunctions made decreases.

Question 67

According to feature-integration theory,cones are the glue necessary to bind features together.

Question 68

According to feature-integration theory,attention is not required to detect the size,shape,and color of an object.

Question 69

When shown an image with an ambiguous figure and ground,such as the Rubin vase,we tend to perceive both possible interpretations simultaneously.

Question 70

Specialized neurons that respond to specific objects such as buildings but not to other objects such as tools provide evidence for the modular view of object recognition.

Question 71

Our perceptual systems respond more strongly to changes in the level of stimulation than to constant stimulation.

Question 72

Thanks to perceptual constancy,you probably can recognize the Mona Lisa,regardless of the angle from which you view it.

Question 73

Image-based object recognition theories are challenged by the fact that we easily recognize the face of our mothers from the faces of other women.

Question 74

Perceptual constancy means that humans are more likely to detect changing environmental stimuli than a constant stimulus.

Question 75

The Gestalt grouping principle of similarity states that elements of a visual image that move together are perceived as parts of a single moving object.

Question 76

Gestalt psychology emphasizes how a unified object is broken down into its component parts.

Question 77

Perceptual constancy is one reason why humans find it difficult to perceive changes in stimuli.

Question 78

An illusory conjunction occurs when we see a green afterimage immediately after staring at a red image.

Question 79

Researchers have found that a specialized area in the temporal lobe responds only when faces are presented in the visual field.

Question 80

The distributed view of object recognition states that there are specialized areas in the brain that respond only to specific objects (e.g. ,faces).