Vestibular System
Detects rotations of the head in around the lateral axis, or in other words rotation in the sagittal plane
What is the superior semicircular canal?
This reflex allows the eyes to stay focused on a target when the head turns to the side
What is the vestibular-ocular reflex (VOR)?
Controls ongoing movement via brainstem descending tracts; Adjusts activity of medial UMN through direct and indirect actions
What is the spinocerebellum?
Damage to this nerve results in claw hand
What is the ulnar nerve?
Symptoms include: Paralysis, loss of discriminative touch and conscious proprioception on one side of the body below the level of the neck
What is Brown’s Sequard syndrome?
Detects side to side movements of the head
What is the posterior semicircular canal?
You test for this using a Snellen chart.
What is visual acuity?
Controls distal limb movements; coordination of voluntary movements via influence on the corticospinal, corticobrainstem and rubrospinal tracts; planning of movement; timing
What is the cerebrocerebellum?
Damage to this nerve results in carpel tunnel syndrome
What is the median nerve?
Symptoms include: hypertonicity, severe primitive reflexes.
What is CP?
Detects angular acceleration and head movements in the horizontal or transverse plan
What is the horizontal semicircular canal?
You test for this by having an individual follow a moving object or target while seated.
What are pursuits?
Influences eye movements and postural muscles; contributes to the coordination of eye and head movements
What is the vestibularcerebellum?
Wrist drop can result from damage to this nerve
What is the radial nerve?
Tinel's sign is a symptom of this
What is carpal tunnel syndrome?
Endolymph flows into and hair cells are located here
What is the ampulla?
A lesion in the left optic nerve would result in this
What is left eye blindness?
Is associated with the following dysfunctions: action tremors, dysdiadochokinesia, dysmetria, ataxic gait (wide based, unsteady, staggering, veering gait) and limb ataxia (dysdiadochokinesia, dysmetria, action tremor)
What is the spinocerebellum?
Trunks include: upper and middle trunks, anterior division and lateral cord
What is musculocutaneous nerve?
If a spinal cord injury is at this level (or below) shoulder elevation is possible
What is C-4?
The saccule and utricle together make up this.
What are the otolith organs?
Testing balance with the eyes open and then the eyes closed tests for this
What is: whether or not a client has a pure sensory impairment vs. a cerebellar impairment?
Associated dysfunctions include the following: Dysarthria, ataxia, incoordination (decreased FMC) of fine finger movements (hand ataxia - difficulty with playing a musical instrument, fastening buttons, keyboarding)
What is the cerebrocerebellum?
Associated spinal nerves are C8-T1
What is the ulnar nerve?
With a complete spinal cord lesion at or below this level, an individual can stand
What is S-1?