PSY 581 Exam 3
What is a dermatome?
an area of the skin innervated by a given spinal nerve
A tonotopic map refers to:
an auditory cortex map of sounds
The receptors for taste are like skin cells in that they:
are continuously being replaced
Which of the following is TRUE about taste receptors?
Are located mainly along the outside edge of the tongue
What neurotransmitter is released by axons that carry pain information to the brain?
Substance P
The somatosensory system involves sensation of:
The body and its movements
Which of the following assumptions is necessary for the place theory of pitch perception, but NOT for the frequency theory?
Various auditory neurons respond best to different wavelengths
Each receptor responds to a wide range of stimuli and contributes to the perception of each of them. This type of coding is referred to as:
across-fiber
After eating slty pretzels, the salty potato chips will taste less salty because of:
adaptation
The eighth cranial nerve contains both a ____component and a ____component
auditory;vestibular
According to the frequency theory, the:
basilar membrane vibrates in synchrony with a sound, producing action potentials at the same frequency.
Each spinal nerve has:
both a sensory and a motor component
People with conductive deafness:
can benefit from surrey or hearing aids
Reduced response to one taste after exposure to another is referred to as:
cross-adaptation
Meissner's corpuscles are:
elaborate neuron endings for touch
The fact that the refractory period limits the firing rate of a neuron is problematic for which of the following?
frequency theory
A mild pain stimulus is associated with a release of
glutamate
Which of the two factors determine whether or not there will be a "sound shadow"?
head size and frequency
Itching is primarily the result of:
histamine release
How many kinds of olfactory receptors do we have?
hundreds
Analogous to lateral inhibition, when olfactory receptors are stimulated they:
inhibit the activity of other receptors
The receptors for taste are:
modified skin cells
What does the vestibular system detect?
movement of the head
The vomeronasal organ (VNO) is a set of receptors located:
near, but separate from, the olfactory receptors
What kind of deafness is the result of damage to the cochlea or the hair cells?
nerve
Olfactory receptors carry their message to the:
olfactory bulb
The brain chemicals known as endorphins and enkephalins produce effects similar to which substance?
opiates
The vestibular organ consists of
otolith organs and semicircular canals
Somatosensory information travbels from the thalamus to which area of the cortex?
parietal lobe
In the otolith organs, the otoliths are calcium carbonate particles that:
push against hair cells when moved
Pacinian corpuscles respond best to:
rapid mechanical pressure
Anti-inflammatory drugs, such as ibuprofen, relieve pain by:
reducing the release of chemicals from damaged tissues
Taste perception in the brain depends on:
relative activity of different taste neurons
Pain receptors of the skin are:
simple, bare neuron endings
Olfaction also plays a subtle role in:
social behavior
What kind of receptors detect pain, warmth, and cold?
somatosensory
The sensory aspect of pain activates the ____cortex, whereas the emotional aspect activates the _____cortex.
somatosensory, cingulate
What are found in papillae
taste buds
To what lobe of the cerebral cortex is auditory information sent
temporal
An acceleration of the head in any plane causes:
the jelly-like substance in one of the semicircular canals to push against hair cells
