Vestibular System Flashcards
The vestibular system maintains?
Postural control
- Balance and equilibrium
- Maintains vertical position
The vestibular system coordination of the - head and eye movement which helps with?
-Gaze stabilization
The vestibular system has conscious perception of?
Head movement and position relative to gravity
The vestibular system input is from which CN?
CN VIII Vestibulocochlear
The vestibulocochlear is the afferent branch of?
VOR
Can be suppressed by the flocculus when needed
If the vestibular system isn’t functioning properly you may have this with your eyes
nystagmus
The three input pathways for the vestibular system are?
vestibulocerebellum
- Vision
- Proprioception and cutaneous input via the spinocerebellum
Can still balance if deficit in either the?
Visual or proprioceptive inputs
Able to compensate for loss of 1
Impairments of balance if deficit in?
Both
Romberg Test/sign
-Positive sign is increased sway and loss of balance with eyes closed
Vestibular nuclei outputs go to?
Muscles for balance
Muscles for postural control
Back to vestibulocerebellum
Head and eye movements systems
Vestibular nuclei outputs - visceral structures via which CN?
CN X Vagus
explains vomiting with overstim of vestibular system
Vestibular nuclei outputs - reticular formation nuclei might explain?
ANS signs associated with vestibular disorders
May explain altered consciousness (light headedness)
Vestibular nuclei outputs - hippocampus and parahippocampal gyrus are important for?
Learning and memory
Processing of spatial memory orientation in space, and navigation
Vestibular nuclei outputs - Parietoinsular vestibular cortex - conscious understanding of?
verticality and self-movement
