Question 1

Haptics and vision provide

Accepted Answer

Haptics (related to touch) and vision provide complementary sources of information because they offer different but supportive sensory inputs that help in understanding the environment.

Question 2

Touch may clarify an object's perceived shape by

Accepted Answer

Concurrent activation of somatosensory brain areas and visual brain areas allows for the integration of tactile and visual information, which can help to clarify the perceived shape of an object.

Question 3

The condition called unilateral neglect is associated with damage to

Accepted Answer

Unilateral neglect, also known as hemispatial neglect, is most commonly associated with damage to the parietal cortex, particularly in the right hemisphere. This condition results in the affected individual ignoring or not being aware of one side of their body or the space around them.

Question 4

The first to attribute phantom limb to residual activation of touch perception was

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Question 5

People with pain insensitivity

Accepted Answer

People with pain insensitivity often have a lowered life expectancy because they are unable to perceive injuries or conditions that would cause pain in others, leading to a lack of early detection and treatment. Pain serves as a warning mechanism for the body, and without it, individuals may unknowingly harm themselves or fail to seek medical attention for serious issues.

Question 6

Wong and Baker introduced a pain scale for use by children based on

Accepted Answer

Wong and Baker introduced a pain scale specifically designed for children that uses smiley faces to represent different levels of pain, making it easier for children to communicate their pain intensity. This scale is known as the Wong-Baker FACES Pain Rating Scale.

Question 7

A? fibers respond to ___________ or to ___________ producing a(n) ___________ sensation of pain; C fibers also respond to ___________ producing a(n) ___________ sensation of pain.

Accepted Answer

A-delta fibers respond to strong mechanical or thermal stimuli, producing an immediate, sharp pain sensation. C fibers respond to chemical stimuli, resulting in a delayed, duller pain sensation.

Question 8

Allodynia is

Accepted Answer

Allodynia refers to the condition where a person experiences pain from stimuli that are not normally painful. This can occur in various conditions, including neuropathies and certain chronic pain syndromes.

Question 9

If told that a very cold object is very hot, volunteers

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Question 10

Research by Merzenich revealed that one area of the brain can take over the function of another part of the brain. Which one of the following is true?

Accepted Answer

Research by Merzenich and others has shown that the brain exhibits plasticity, which means that one area of the brain can indeed take over the functions of another part, and this ability is present regardless of the age of the organism. While plasticity is more pronounced in younger brains, adult brains also have this capability, albeit to a lesser extent.

Question 11

The theory of Mountcastle and the research by Merzenich and others have shown that the synapses associated with touch are continuously being affected by one's experiences. This suggests that the neuronal connections supporting touch are

Accepted Answer

The theory of Mountcastle and the research by Merzenich and others highlight the plasticity of the brain, particularly in how experiences can reshape the synaptic connections related to touch, indicating that these connections are adaptable or plastic.

Question 12

Plasticity in the somatosensory cortex

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Question 13

The research-based touch rehabilitation therapy developed by Dannenbaum and Dykes (1988) uses the strategy of

Accepted Answer

The strategy focuses on reeducating one component of touch at a time, allowing for a focused and gradual improvement in touch perception and function.

Question 14

Aristotle's illusion refers to

Accepted Answer

Aristotle's illusion occurs when a single object, such as a small ball or stick, is touched with crossed fingers, leading the person to mistakenly perceive it as two separate objects. This phenomenon highlights the brain's reliance on the expected position of the fingers to interpret sensory information, and when fingers are crossed, this spatial expectation is violated, causing a misinterpretation of the sensory input.

Question 15

Aristotle found that if two adjacent fingers are crossed and touch a singular object, the perception is of touching two separate objects. This phenomenon of "double touch" has been labeled

Accepted Answer

Diplesthesia refers to the perception of two sensations from a single stimulus, which aligns with the phenomenon Aristotle described regarding crossed fingers touching a singular object and perceiving it as two separate objects.

Question 16

What is the distinction between touch sensitivity and touch acuity?

Accepted Answer

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Question 17

Describe how surface roughness seems to be registered by the nervous system.

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Question 18

Why are raised dots used for portraying written language for the blind instead of embossed or raised letter shapes?

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Question 19

In what way(s) is registration and processing of tactile information comparable to registration and processing of visual information?

Accepted Answer

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Question 20

Why is proprioceptive information crucial for haptics?

Accepted Answer

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Quiz 13: Touch