Chapter 14 Flashcards
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.
enclosure and contour following
Which of the following body parts has the lowest two-point threshold?
fingertips
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?
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
Which of the following is true regarding body mapping in the somatosensory cortex?
Body maps appear in S1 and S2
The demonstration in which you perceived the texture of a surface using your pen or another “tool” showed
that you can use vibrations to perceive the texture of the surface
Neuropathic pain : __________ :: Inflammatory pain: _______.
carpal tunnel syndrome; tumor cells
In most of our daily experience of touch, we are using
active touch
Sensory component of pain : ________ :: emotional component of pain : ________.
throbbing; annoying
Pokorny reduced the perceived pain for a burn victim by
presenting a virtual-reality “game” that involved chasing a spider and grinding the spider in a garbage disposal
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
larger than the area for the fingers on the left hand of a non-musician
Penfield mapped locations of body parts on area S1 by
stimulating S1 areas in humans, and asking where they felt body sensations
Neurons in the monkey somatosensory cortex have been found that
respond only to stimuli of a specific orientation.
respond only to active touching of a ruler.
respond differently under different attention conditions.
The Meissner corpuscle is associated with
controlling handgrip
The fibers from the medial lemniscal pathway and the spinothalamic pathway go to the
ventrolateral nucleus
The function of the skin is
warning the individual of possible injury.
preventing body fluids form escaping.
protecting the organism from bacteria and chemical agents
The function of the skin is
warning the individual of possible injury.
preventing body fluids form escaping.
protecting the organism from bacteria and chemical agents
The area on S1 associated with the thumb is as large as the area for the forearm. This is an example of
cortical magnification
The phenomenon of “phantom limb” is difficult to explain using the _______ of pain.
direct pathway model
The density of the ______ on the fingertips than on the palms.
Merkel receptors are higher
The _______ are located near the border of the epidermis and surface of the skin, and are associated with sensing fine details.
Merkel receptors
The mechanoreceptors primarily responsible for feeling the vibrations from an electric toothbrush are _________ because these receptors contain an “onion-like” series of layers.
Pacinian corpuscles
The fibers from the medial lemniscal pathway and the spinothalamic pathway go to the
ventrolateral nucleus
endorphins
are morphine-like substances found in the body.
Which if the following is an “exploratory procedure” identified by Lederman and Klatzky?
Enclosure
Pressure
Contour following
Stroking a participants’ leg led to increased activation in S2. Interestingly, S2 activity also increased
when participants saw a video depicting someone stroking an office supply binder
The receptive fields of cortical S1 neurons are
smaller for the fingers than the forearm
Research by Derbyshire et al. (2003) showed that
hypnosis can affect pain perception, and the brain activity associated with pain
Which of the following is NOT a mechanoreceptor?
chancellor cells
The phrase “multimodal nature of pain” refers to
sensory and emotional components of pain
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
haptic perception
pain subjective intensity : _______ :: pain unpleasantness: ________.
Area S1; the ACC
The Meissner corpuscle is associated with
center-surround receptive fields
The nerve fibers in the spinal cord go in
both the medial lemniscal pathway and the spinothalamic pathway
According to the gate control theory of pain, the ______ opens the pain gate by sending excitation to___.
Nociceptors; Transmission cells
Lucy, a heterosexual female, would be able to keep her hand immersed in cold water longer if she was
looking at pictures of attractive males
Based on the finding that ______________________, it is believed that endorphins are linked to pain relief.
naloxone injections decrease the analgesic effect of endorphins and placebos
Which of the following structures is not part of the pain matrix?
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