Chapter 14

Question 1

BobbyDale is asked to use haptic perception to identify a soccer ball. She will most likely use the exploratory procedure(s) of _______________ to identify the soccer ball’s exact shape.

Answer 1

enclosure and contour following

Question 2

Which of the following body parts has the lowest two-point threshold?

Answer 2

fingertips

Question 3

Mika touches a high-curvature stimulus and a lower-curvature stimulus with her fingertip. Which of the following best describes the firing of the mechanoreceptor fibers?

Answer 3

The receptors right at the point of contact respond the most and the ones further away fire less in both cases, but the pattern of firing is different for the two stimuli

Question 4

Which of the following is true regarding body mapping in the somatosensory cortex?

Answer 4

Body maps appear in S1 and S2

Question 5

The demonstration in which you perceived the texture of a surface using your pen or another “tool” showed

Answer 5

that you can use vibrations to perceive the texture of the surface

Question 6

Neuropathic pain : __________ :: Inflammatory pain: _______.

Answer 6

carpal tunnel syndrome; tumor cells

Question 7

In most of our daily experience of touch, we are using

Answer 7

active touch

Question 8

Sensory component of pain : ________ :: emotional component of pain : ________.

Answer 8

throbbing; annoying

Question 9

Pokorny reduced the perceived pain for a burn victim by

Answer 9

presenting a virtual-reality “game” that involved chasing a spider and grinding the spider in a garbage disposal

Question 10

Jan is a right-handed violin player – she bows with her right hand and fingers the strings with her left. The cortical representation for the fingers on her left hand is

Answer 10

larger than the area for the fingers on the left hand of a non-musician

Question 11

Penfield mapped locations of body parts on area S1 by

Answer 11

stimulating S1 areas in humans, and asking where they felt body sensations

Question 12

Neurons in the monkey somatosensory cortex have been found that

Answer 12

respond only to stimuli of a specific orientation.
respond only to active touching of a ruler.
respond differently under different attention conditions.

Question 13

The Meissner corpuscle is associated with

Answer 13

controlling handgrip

Question 14

The fibers from the medial lemniscal pathway and the spinothalamic pathway go to the

Answer 14

ventrolateral nucleus

Question 15

The function of the skin is

Answer 15

warning the individual of possible injury.
preventing body fluids form escaping.
protecting the organism from bacteria and chemical agents

Question 16

The function of the skin is

Answer 16

warning the individual of possible injury.
preventing body fluids form escaping.
protecting the organism from bacteria and chemical agents

Question 17

The area on S1 associated with the thumb is as large as the area for the forearm. This is an example of

Answer 17

cortical magnification

Question 18

The phenomenon of “phantom limb” is difficult to explain using the _______ of pain.

Answer 18

direct pathway model

Question 19

The density of the ______ on the fingertips than on the palms.

Answer 19

Merkel receptors are higher

Question 20

The _______ are located near the border of the epidermis and surface of the skin, and are associated with sensing fine details.

Answer 20

Merkel receptors

Question 21

The mechanoreceptors primarily responsible for feeling the vibrations from an electric toothbrush are _________ because these receptors contain an “onion-like” series of layers.

Answer 21

Pacinian corpuscles

Question 22

The fibers from the medial lemniscal pathway and the spinothalamic pathway go to the

Answer 22

ventrolateral nucleus

Question 23

endorphins

Answer 23

are morphine-like substances found in the body.

Question 24

Which if the following is an “exploratory procedure” identified by Lederman and Klatzky?

Answer 24

Enclosure
Pressure
Contour following

Question 25

Stroking a participants’ leg led to increased activation in S2. Interestingly, S2 activity also increased

Answer 25

when participants saw a video depicting someone stroking an office supply binder

Question 26

The receptive fields of cortical S1 neurons are

Answer 26

smaller for the fingers than the forearm

Question 27

Research by Derbyshire et al. (2003) showed that

Answer 27

hypnosis can affect pain perception, and the brain activity associated with pain

Question 28

Which of the following is NOT a mechanoreceptor?

Answer 28

chancellor cells

Question 29

The phrase “multimodal nature of pain” refers to

Answer 29

sensory and emotional components of pain

Question 30

When you try to identify a three-dimensional object by touch alone, and are allowed to have control over your hand and finger movements, you are using

Answer 30

haptic perception

Question 31

pain subjective intensity : _______ :: pain unpleasantness: ________.

Answer 31

Area S1; the ACC

Question 32

The Meissner corpuscle is associated with

Answer 32

center-surround receptive fields

Question 33

The nerve fibers in the spinal cord go in

Answer 33

both the medial lemniscal pathway and the spinothalamic pathway

Question 34

According to the gate control theory of pain, the ______ opens the pain gate by sending excitation to___.

Answer 34

Nociceptors; Transmission cells

Question 35

Lucy, a heterosexual female, would be able to keep her hand immersed in cold water longer if she was

Answer 35

looking at pictures of attractive males

Question 36

Based on the finding that ______________________, it is believed that endorphins are linked to pain relief.

Answer 36

naloxone injections decrease the analgesic effect of endorphins and placebos

Question 37

Which of the following structures is not part of the pain matrix?

Answer 37

SEC