Chapter 14 Flashcards

1
Q

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.

A

enclosure and contour following

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2
Q

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

A

fingertips

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3
Q

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?

A

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

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4
Q

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

A

Body maps appear in S1 and S2

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5
Q

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

A

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

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6
Q

Neuropathic pain : __________ :: Inflammatory pain: _______.

A

carpal tunnel syndrome; tumor cells

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7
Q

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

A

active touch

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8
Q

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

A

throbbing; annoying

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9
Q

Pokorny reduced the perceived pain for a burn victim by

A

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

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10
Q

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

A

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

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11
Q

Penfield mapped locations of body parts on area S1 by

A

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

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12
Q

Neurons in the monkey somatosensory cortex have been found that

A

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

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13
Q

The Meissner corpuscle is associated with

A

controlling handgrip

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14
Q

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

A

ventrolateral nucleus

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15
Q

The function of the skin is

A

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

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16
Q

The function of the skin is

A

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

17
Q

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

A

cortical magnification

18
Q

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

A

direct pathway model

19
Q

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

A

Merkel receptors are higher

20
Q

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

A

Merkel receptors

21
Q

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

A

Pacinian corpuscles

22
Q

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

A

ventrolateral nucleus

23
Q

endorphins

A

are morphine-like substances found in the body.

24
Q

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

A

Enclosure
Pressure
Contour following

25
Q

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

A

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

26
Q

The receptive fields of cortical S1 neurons are

A

smaller for the fingers than the forearm

27
Q

Research by Derbyshire et al. (2003) showed that

A

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

28
Q

Which of the following is NOT a mechanoreceptor?

A

chancellor cells

29
Q

The phrase “multimodal nature of pain” refers to

A

sensory and emotional components of pain

30
Q

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

A

haptic perception

31
Q

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

A

Area S1; the ACC

32
Q

The Meissner corpuscle is associated with

A

center-surround receptive fields

33
Q

The nerve fibers in the spinal cord go in

A

both the medial lemniscal pathway and the spinothalamic pathway

34
Q

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

A

Nociceptors; Transmission cells

35
Q

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

A

looking at pictures of attractive males

36
Q

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

A

naloxone injections decrease the analgesic effect of endorphins and placebos

37
Q

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

A

SEC