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  2. Benign paroxysmal positional vertigo - Wikipedia

    en.wikipedia.org/wiki/Benign_paroxysmal...

    Exterior of labyrinth of the inner ear. Benign paroxysmal positional vertigo ( BPPV) is a disorder arising from a problem in the inner ear. [ 3] Symptoms are repeated, brief periods of vertigo with movement, characterized by a spinning sensation upon changes in the position of the head. [ 1] This can occur with turning in bed or changing ...

  3. Caloric reflex test - Wikipedia

    en.wikipedia.org/wiki/Caloric_reflex_test

    ICD-9-CM. 95.44. MedlinePlus. 003429. In medicine, the caloric reflex test (sometimes termed 'vestibular caloric stimulation ') is a test of the vestibulo-ocular reflex that involves irrigating cold or warm water or air into the external auditory canal. This method was developed by Robert Bárány, who won a Nobel prize in 1914 for this discovery.

  4. Nystagmus - Wikipedia

    en.wikipedia.org/wiki/Nystagmus

    Nystagmus. Nystagmus is a condition of involuntary (or voluntary, in some cases) [1] eye movement. [2] People can be born with it but more commonly acquire it in infancy or later in life. In many cases it may result in reduced or limited vision. [3] In normal eyesight, while the head rotates about an axis, distant visual images are sustained by ...

  5. Positional alcohol nystagmus - Wikipedia

    en.wikipedia.org/wiki/Positional_Alcohol_Nystagmus

    Horizontal Gaze Nystagmus (HGN) testing is a common practice used by law enforcement in the United States in the identification of persons who are intoxicated or under the influence of a controlled substance. The key difference between recognizing PAN and horizontal gaze nystagmus is the position of the subject's head in relation to the body.

  6. Parinaud's syndrome - Wikipedia

    en.wikipedia.org/wiki/Parinaud's_syndrome

    Parinaud's syndrome is a constellation of neurological signs indicating injury to the dorsal midbrain. More specifically, compression of the vertical gaze center at the rostral interstitial nucleus of medial longitudinal fasciculus (riMLF). It is a group of abnormalities of eye movement and pupil dysfunction and is named for Henri Parinaud [ 6 ...

  7. Oscillopsia - Wikipedia

    en.wikipedia.org/wiki/Oscillopsia

    Oscillopsia is a visual disturbance in which objects in the visual field appear to oscillate. The severity of the effect may range from a mild blurring to rapid and periodic jumping. [ 1] Oscillopsia is an incapacitating condition experienced by many patients with neurological disorders. [ 2] It may be the result of ocular instability occurring ...

  8. Spinal stenosis - Wikipedia

    en.wikipedia.org/wiki/Spinal_stenosis

    Spinal stenosis is an abnormal narrowing of the spinal canal or neural foramen that results in pressure on the spinal cord or nerve roots. [ 6] Symptoms may include pain, numbness, or weakness in the arms or legs. [ 1] Symptoms are typically gradual in onset and improve with leaning forward. [ 1]

  9. Vestibular system - Wikipedia

    en.wikipedia.org/wiki/Vestibular_system

    The vestibular system, in vertebrates, is a sensory system that creates the sense of balance and spatial orientation for the purpose of coordinating movement with balance. Together with the cochlea, a part of the auditory system, it constitutes the labyrinth of the inner ear in most mammals . As movements consist of rotations and translations ...

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