exam 2 - vets lan testing

Question 1

what does the superior vest nerve serve

Answer 1

anterior SSC
horizontal SSC
urturicle

Question 2

what does the inf vest nerve serve

Answer 2

posterior SSC
saccule

Question 3

what is the purpose of oculomotor testing

Answer 3

measure eye movements
making sure the eyes are working

Question 4

what part of nys tell us about VOR

Answer 4

the slow phase

Question 5

what is the purpose of positional testing

Answer 5

test the effect of different head positions within the gravitaional field

no the head moving but the stationary head positions

Question 6

directional fixed nystagmus

Answer 6

peri

Question 7

directional chnaging nys

Answer 7

central until proven other wise

Question 8

what is calorics purpose

Answer 8

to test the sensitivity of the horizontal canal to thermally induced ndolymph movement

Question 9

what is a normal caloric response

Answer 9

nys and vertigo

Question 10

warm - caloric response

Answer 10

nys in the same direction at the ear you are testing, right ear, right beating nys

Question 11

in caloric testing what does a absent response indicate

Answer 11

complete loss of of vest function

Question 12

bilateral vestibular loss - caloric other finding

Answer 12

slow component velocity <10 m/sec for all 4 standard irragations

Question 13

what is caloric testing good for

Answer 13

UVL - laterlizes a peri hypofunction

Question 14

what can you used caloric testing on

Answer 14

horizontal canal and superior vestibular nerve only

Question 15

what is the purpsose of rotational testing

Answer 15

test the senitivity of the horizontal canals to physiological movements

Question 16

can you test just one ear with the rotational testing

Answer 16

no you are stimulating both laybrinths stimulantously

Question 17

is rot testing performed in the light or the dark

Answer 17

dark

Question 18

with hypo of the peri vest system what happens to gain

Answer 18

reduced gain

Question 19

if gain is abnormally large what does this indicate

Answer 19

cere disorder

Question 20

what is directional preponderance

Answer 20

asymmertric response between magnitude of the right and left eye

on going VOR imbalance

Question 21

what is action that suppress the VOR and decreases gain

Answer 21

rot while viewing a moving object

does not work - central abnormality

Question 22

what action enhances VOR and increases gaine

Answer 22

rot while viewing a earth fixed strip

does not work - central abnormality

Question 23

benefits of rot testing

Answer 23

physical stim

not sym provoking

Question 24

in rotational test a very low gain is an indication of what

Answer 24

bilateral dys

Question 25

what is the purpose of VHIT

Answer 25

test sensitivity of canal high speed movements

Question 26

what canals does the VHIT test

Answer 26

vertical and horizontal

and test on canal at a time

Question 27

what is vest evoked myogenic potentials (VEMP)

Answer 27

sound excites the vestibular organs

Question 28

what is the VEMP testing

Answer 28

otolith organs and different divsion of the vestibualr nerve

Question 29

two types of VEMPS

Answer 29

ocular

cervical

Question 30

cervical VEMPS

Answer 30

sacccule - inferior vest nerve

isp SCM

loud clicks evoke brief saccule excitement and decrease of isp SCM EMG

Question 31

ocular VEMPS

Answer 31

urticle - superior vest nerve

contra inferior oblique