1. LABORATORY EXAMINATION OF THE VESTIBULAR SYSTEM

2. CURRENTLY, THE VESTIBULAR TESTS THAT
ARE IN PRACTICAL USE INCLUDE ELECTRO-
NYSTAGMOGRAPHY, ROTATION TESTING
AND POSTUROGRAPHY.

3. ENG AND ROTATIONAL TESTING EVALUATE
VESTIBULO-OCULAR REFLEX [VOR]
POSTUROGRAPHY IS THE TEST OF POSTURAL
STABILTY /VESTIBULOSPINAL REFLEX/.

4. ENG REMAINS THE MAINSTAY OF THE
VESTIBULAR ASSESSMENT BECAUSE
IT PROVIDES THE ABILITY TO TEST
THE VESTIBULAR AND OCULOMOTOR
SYSTEMS AND ALSO TO CHECK EACH
SIDE SEPARATELY.

5. INDICATION FOR ENG TEST
DIZZINESS
SN HEARING LOSS
TINNITUS

6. THE PREPARATION OF THE PATIENT
THE PATIENT IS ASKED:
NOT TO DRINK ALCOHOLIC BEVERAGES
48 HOURS BEFORE THE TEST,
NOT TO EAT 2 HOURS BEFORE THE TEST,
NOT TO WEAR MAKE-UP, LOTIONS OR FACE
CREAMS,
NOT TO USE MEDICINES AGAINST VERTIGO,
SLEEPING-PILLS, SEDATIVES 48 HOURS
BEFORE THE TEST,
NOT TO DRIVE A CAR 1 HOUR AFTER THE
TEST.

7. SPONTANEOUS NYSTAGMUS TEST
THE PARTS OF ENG
OCULOMOTR TESTS
SPONTANEOUS NYSTAGMUS TEST
PAROXYSMAL TEST
POSITIONAL TEST
CALORIC TEST

8. DIRECTION OF THE EYE MOVEMENT
RED –EYE MOVEMENT TO THE
RIGHT /RECORDING IS
DIRECTED FROM DOWN
TO UP/ . THE BLACK LINE –
THE EYE IS NOT MOVING. THE
BLUE LINE IS DIRECTED FROM
UP TO DOWN –THE EYE IS
MOVING TO THE LEFT.
AXIS X IS THE AXIS OF TIIME
/SECONDS/.
AXIS Y IS THE AXIS OF DISTANCE /DEGREES/.
THE RECORDING GOES FROM
LEFT TO THE RIGHT.

10. Left beating nystagmus

11. Right beating nystagmus

12. Slow phase velocity /spv/

13. PENDULAR NYSTAGMUS