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The Parks–Bielschowsky three-step test, [1] also known as Park's three-step test or Bielschowsky head tilt test, [2] is a method used to isolate the paretic extraocular muscle, particularly superior oblique muscle and trochlear nerve (fourth cranial nerve), [3] in acquired vertical double vision. [4] It was originally described by Marshall M ...
The Rinne test involves using a tuning fork to distinguish between conductive hearing and sensorineural hearing. Conductive hearing relies on vibrations being conducted through the ossicles of the middle ear. Sensorineural hearing is the transmission of sound stimuli through the neural components of the inner ear and cranial nerve.
A neurological examination is the assessment of sensory neuron and motor responses, especially reflexes, to determine whether the nervous system is impaired. This typically includes a physical examination and a review of the patient's medical history, [1] but not deeper investigation such as neuroimaging.
This is a highly formalised series of steps involving specific tests for each nerve. [16] Dysfunction of a nerve identified during testing may point to a problem with the nerve or of a part of the brain. [16] A cranial nerve exam starts with observation of the patient, as some cranial nerve lesions may affect the symmetry of the eyes or face. [16]
Cranial nerves; CN 0 – Terminal; CN I – Olfactory; CN II – Optic; CN III – Oculomotor; CN IV – Trochlear; CN V – Trigeminal; CN VI – Abducens; CN VII – Facial; CN VIII – Vestibulocochlear; CN IX – Glossopharyngeal; CN X – Vagus; CN XI – Accessory; CN XII – Hypoglossal
In neuroanatomy, the trigeminal nerve (lit. triplet nerve), also known as the fifth cranial nerve, cranial nerve V, or simply CN V, is a cranial nerve responsible for sensation in the face and motor functions such as biting and chewing; it is the most complex of the cranial nerves.
Fibers from the optic nerves cross over in the optic chiasm with some fibers passing to the contralateral optic nerve tract. This is the basis of the " swinging-flashlight test ". Loss of accommodation and continued pupillary dilation can indicate the presence of a lesion on the oculomotor nerve.
The cerebellum provides the motor control that allows people to maintain balance by integrating three types of sensory input: vestibular (inner ear and eight cranial nerves), proprioceptive (peripheral nerves and dorsal columns of the spinal cord), and visual (eyes and second cranial nerves). Now, Romberg's test evaluates postural instability ...