quiz 7

Question 1

What is the fast adapting mechanoreceptor that was found to be most useful for texture perception, in support of the duplex theory?

Answer 1

Pacinian corpuscles

Question 2

Temperature and pain information usually travels along the _________________ pathway to the brain.

Answer 2

spinothalamic

Question 3

The organization of center-surround receptive fields in the somatosensory system seems to follow a particular organization in the thalamus and cortex. The spatial organization of these receptive fields, in which nearby areas of skin are represented close together in thalamus and cortex is called _________________ organization.

Answer 3

topographic

Question 4

Because people tend to have very similar Penfield homunculi, we can say these are genetically encoded modules that never change.

Answer 4

False

Question 5

In a single-cell examination of the plasticity of the somatosensory map in monkeys, it was found that the cortical representation of a finger tip in S1 changed over time as a result of touch training. Which of Marr’s levels of analysis best fits this experiment?

Answer 5

implementational

Question 6

In lecture we saw an example of object identification using haptic Exploratory Procedures (EPs). Which of the following EPs were likely used to identify the objects? [Mark all that apply.]

Answer 6

A. Lateral motion
C. Enclosure
D. Contour following

Question 7

Using single cell recordings, it has been found that some cells in somatosensory cortex respond strongly to the orientation of objects on the skin. However, no cells have been found that respond to the direction of movement of objects on the skin.

Answer 7

False

Different cells may respond to both tactile cues, similar to simple and complex cells in vision.

Question 8

Neurons specialized to detect the presence of heat or cold that could cause tissue damage are called ______________.

Answer 8

nociceptors

Question 9

Of the varieties of pain discussed in lecture, __________ is the type of pain caused by damage to the central nervous system (e.g. thalamic stroke).

Answer 9

Neuropathic pain

Question 10

We saw that the brain responds to pain and pain perceptions by changing activity in a number of different cortical and subcortical regions. This distributed representation is known as the pain matrix. Which portion of the pain matrix was found to respond most strongly to the presence of social distress?

Answer 10

Anterior cingulate

Question 11

n the gate control model of pain perception, we can exert some cognitive control over the amount of pain we experience. Among the ways we do this are (mark all that apply):

Answer 11

A. Shaping expectations
B. Shifting attention
D. Positive emotional distraction

Question 12

Experiments by Hofbauer and others have shown that we can separate the sensory and affective aspects of pain. This was done by having individuals rate the subjective ___________ and ____________ of pain.

Answer 12

intensity; unpleasantness