Transcript 832 week one and two flash

Flash Cards
How does the brain initiate the
cerebellar clamp?
Click here for the answer
When a sudden injury occurs to one side of
the balance system, the signal being sent from
the two balance organs are not "equal and
opposite." The brain interprets this difference
as movement. The brain recognizes that the
signals being received from the ears are
incorrect, the brains "turns the signals off"
through the cerebellar clamp.
True or False?
The clamp persists for months.
False
http://www.lifeprint.com/
What happens when the brain
gradually releases the clamp?
This allows more signals to pass to the
balance area of the brain.
True or False?
Vestibular rehabilitation works because
avoidance of movement stimulate the sensory
Inputs that are necessary for balance
False
True or False?
During vestibular adaptation, retinal slip sends an
error message to the brain. The brain attempts to
minimize the "error" message by increasing the
symmetry of the VOR response/
False
True or False?
Visual sensory input influences balance
and postural control by reacting to the
somatosensory changes that are perceived
in muscles of the lower extremities.
False
True or False?
Increasing adaptation of the
VOR is very important to the
rehabilitative process.
True, but why?
True or False?
Cellular vestibular recovery occur after
blocking of the blood supply (de-nervation)
results in generation of additional nerve
axons ?
False
True or False?
Only changing the magnitude of the VOR
using an altered visual environment
causes physiologic alterations
of the VOR.
False, what else causes
physiologic alterations of the
VOR?
True or False?
Repeated optokinetic stimulation induces
some adaptive process which restores OKN
asymmetry and slow phase velocity
suggests that activity is fundamental in the
recovery of vestibular deficits.
True
True or False?
Adaptation occurs as the result of a
reduction of symptoms through
repetitive exposure to specific movements.
False
True or False?
Habituation involves the
replacement of lost vestibular
function with other
rehabilitation "strategies.”
False
True or False?
The role of the vestibular system in
postural control is the more
influential input when the patient is
in a quiet stance.
False
True or False?
The somatosensory system’s role
in postural control is the more influential
input when the patient is moving.
False
True or False?
The VSR (vestibulo spinal reflex)
compliments the vestibular ocular
reflex (VOR) during low frequency
brief head movements.
False
True or False?
The somatosensory system includes inputs
from only the upper/ lower extremities.
False
True or False?
The main goal or function of the vestibular
spinal reflex (VSR) is to stabilize the head
relative to the body position.
False
True or False?
The body recovers from vestibular injury
by simply having the part of the brain that
controls balance compensate for the
matching signals being sent from both
vestibular systems.
False
True or False
Patients with vestibular damage should be
encouraged to avoid moving about to
generate sensory motor mismatches.
False
True or False?
All that is required for a patient to
compensate for a vestibular injury
is that the balance areas of the brain
must be capable of change.
False
True or False?
Patients that have a relatively active
life style recover more quickly
from vestibular insult than patients
that lead a more sedentary lifestyle.
False
True or False?
When the balance system is damaged
it generally repairs itself with assistance
from other sensory input systems.
True
Vestibular decompensation occurs when
the brain remembers the fine tuning
procedure it developed during the chronic
compensation phase of the vestibular
injury.
False
Patients who do not demonstrate a
spontaneous resolution of symptoms
of dizziness and disequilibrium at least
one year or more from the onset of
symptoms may benefit from
vestibular rehabilitation therapy.
False
Vestibular suppressant medications
have been found to be beneficial
during the acute phase of
vestibular injury.
True
True or False?
Test results may incorrectly suggest that
the patient has damage to both sides of
the vestibular system when balance
testing is performed during the acute
phase of a vestibular injury.
True, but why?
Only patients with peripheral
vestibular disorders are most
likely to experience vestibular
decompensation?
False
True or False?
When the vestibular system is stimulated
by movement, loss of signal from one
semicircular canal results in slow phase
movement away from the ear with the
vestibular lesion.
False
http://www.lifeprint.com/
True or False?
The proprioceptors that
provide somatosensory system
information related to body position
are located only in the muscles of the
body.
False
True or False?
In cellular recovery, symptoms of dizziness
can resolve 30 days or more following
a vestibular deficit because of the recovery in
the resting firing rate of the vestibular neurons.
False
True or False?
The concept of substitution in
vestibular rehabilitation therapy
refers to the use of only visual
cues to improve gaze and
postural stability?
False
Good luck !