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The NeuroMap is based on mapping the main neural functions on a diagram of the nervous system. If a lesion is in a particular area, you can read from the NeuroMap which neural functions could be disrupted and conversely, which neural functions will be normal.
- Christine E. Thomson, BVSc (Hons), Dacvim (Neurol), Decvn, PhD
Christine E. Thomson, BVSc (Hons), DACVIM (Neurol), DECVN,...
- Christine E. Thomson, BVSc (Hons), Dacvim (Neurol), Decvn, PhD
Dogs and cats with peripheral vestibular disease typically display head tilt, spontaneous (resting) nystagmus, strabismus, and ataxia. Falling and rolling may also be observed. Other cranial nerves that can be affected because of their proximity to CN VIII in the petrous temporal bone are CN VII and the sympathetic innervation to the eye (i.e ...
• To review the anatomy of the vestibular system and the pathophysiology of the vestibular disease • How to distinguish between peripheral and central vestibular disease • To review differential diagnoses and diagnostic testing for both peripheral and central vestibular
These nerves are divided into 2 parts: the cochlear nerve, which responds to sound; and the vestibular nerve, which functions to maintain posture and balance. Glossopharyngeal. Provide sensory and motor control of the throat and vocal chords. Vagus.
Figure 3. Vibrissae response: Touch the upper lip; the patient may move the lip only or turn the head away. Figure 4. auricular reflex: The inner pinna is innervated by CN VII; the response should be twitching of the ear, blinking, or shaking of the head.
Canine idiopathic vestibular disease (also called old dog vestibular disease) and its feline counterpart, feline idiopathic vestibular disease, begin acutely and resolve acutely. Usually, improvement is evident in 72 hours and the animal is normal in 7 to 14 days, although occasionally a head tilt will persist.
When moving the head or spinning a patient, the vestibular nerve (CN VIII) provides the afferent input. This response is processed centrally in the brainstem (via the vestibular nerve cell body and medial longitudinal fasciculus) and cerebellum (floculonodular lobe).
