What happens to the perception of pressure if a stimulus is applied continuously to a specific spot on the skin?
Responda
It fades in some receptive fields, but increases in others.
It increases over time.
It gradually fades.
It fades only if the pressure is pulsatile.
Questão 2
Questão
What route is taken by nerve fibres that carry information about pressure from the surface of the skin on the left side of the body?
Responda
past the spinal column and into the left temporal cortex
along the spinal meninges and terminating in the left parietal somatosensory cortex
through the spinal column and into the right frontal motor cortex
through the spinal column and into the right parietal somatosensory cortex
Questão 3
Questão
Which pain pathway transmits information about an injury that has just occurred?
Responda
fast
geniculate
slow
medial
Questão 4
Questão
Which pathway for pain results in the experience of pain being less localized and longer lasting?
Responda
endorphin
generic
slow
thalamic
Questão 5
Questão
What structures do neural transmission in the slow pain pathway depend on?
Responda
pulsating neural impulses called pain spindles
opponent process receptors in the area surrounding the injury
thicker, myelinated neurons called A-delta fibres
thin, unmyelinated neurons called C fibres
Questão 6
Questão
Catelin has had a slow throbbing pain in her ankle since she twisted it while in-line skating last week. Where are these pain signals travelling?
Responda
along thin, unmyelinated C fibres
through periacqueductal gray neurons in the midbrain
along ungated endorphin pathways in the hypothalamus
through thick, myelinated A-delta fibres
Questão 7
Questão
Derek dropped a hammer on his foot and shrieked a split second later at the intense pain from a newly broken toe. How did the almost instantaneous pain signals travel?
Responda
along thick, myelinated A-delta fibres
through periacqueductal gray neurons in the midbrain
along thin, unmyelinated C fibres
through gated endorphin pathways in the hypothalamus
Questão 8
Questão
Which of the following accurately describes the role of culture for pain perception?
Responda
Race has a larger impact on pain perception than does culture.
Culture has no impact on pain perception or attitudes toward pain.
Culture affects willingness to tolerate pain, but not the process of pain perception.
Cultural rules dictate the amount of pain experienced, but only above a certain innate threshold.
Questão 9
Questão
Which theory can account for the fact that people suffering from pain sometimes report pain relief from a sugar pill placebo?
Responda
cognitive control
sensory adaptation
perceptual constancy
gate control
Questão 10
Questão
Which of the following helps to explain an athlete’s ability to play with a broken foot and not feel the pain until much later?
Responda
overactive thyroid response
hypnotic induction control theory of pain
sympathetic nervous system control mechanisms
gate-control theory of pain
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