vestibular disorders
A hallucination of movement; sensation of spinning, rocking, floating, or falling in the absence of external stimulation
What is vertigo?
The two ways to measure Nystagmus
What are electrodes and infrared/video systems? (ENG and VNG)
Cochlear hair cell that is embedded in the tectorial membrane
What is an Outer Hair Cell?
The two main functions of the cochlea
What is frequency analysis and transduction?
The three sensory systems of the balance
What are the eyes, proprioceptors, and the vestibular system?
What are:
Vertigo
Nystagmus
Anxiety
Rapid Heart Rate
Nausea and vomiting?
Test that uses loud sounds as stimulus and measures muscle activation in the eye and neck with electrodes
The fluid that is set into motion by the stapes and the structure the encases it
What are perilymph and the scala vestibuli?
Frequencies that peak near the apex of the Basilar Membrane
What are low frequencies?
The difference between pathological and physiological nystagmus
Pathological nystagmus occurs without vestibular stimulation
Brief attacks of intense vertigo associated with changes in head position; the most common vestibular disorder
Test that can evaluate all six semicircular canals; patient wears infrared goggles and focuses on a visual stimulus while clinician moves their head rapidly
What is vHIT?
Structures of the vestibular system that sense vertical and horizontal straight line movement
What are the saccule (vertical) and utricle (horizontal)?
The sympathetic vibrator of the inner ear
What is the basilar membrane?
Outer Hair Cells' favorite song to dance to
What is Rock Around the Clock?
What is vestibular neuritis?
A type of posturography test that measures sway while visual and/or proprioceptive information varies
What is sensory organization test?
The fluid that is responsible for shearing the vestibular hair cells
What is endolymph?
The frequency at which a particular place on the basilar membrane is tuned to fire
What is a characteristic frequency?
Treatment for patients with permanent vestibular system damage; balance activities and eye movement exercises designed to speed up central compensation, improve functional balance, and decrease intensity of dizziness
What is Vestibular Rehabilitation Therapy (VRT)?
Leakage of perilymph from the inner ear, usually due to trauma; hearing loss and vertigo are present
What is perilymph fistula?
Posturography test where patient wears a harness and tries to remain stable while the platform moves underneath them
What is CDP?
Features of the organ of Corti (name 3)
What are:
Inner Hair Cells
Outer Hair cells
Supporting Cells
Tectorial Membrane
Reticular Lamina
Spiral Limbus?
Active amplifying cochlear process that enhances the motion of endolymph between tectorial and basilar membranes
What is Outer Hair Cell motility?
A vestibular disorder caused by excessive endolymph (endolymphatic hydrops); characterized by episodes of vertigo, hearing loss, tinnitus, and fullness
What is Meniere's Disease?