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The inner ear assumes dual functionalities of auditory perception and equilibrium maintenance. The vestibule is the organ responsible for balance. This organ contains mechanoreceptors, specifically hair cells, endowed with stereocilia, which aid in deciphering information regarding the position and motion of our heads. Two intrinsic components, the utricle and saccule, help perceive head position, while the semicircular canals track head movement. Neurological messages initiated in the...
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The vestibular system is a set of inner ear structures that provide a sense of balance and spatial orientation. This system is comprised of structures within the labyrinth of the inner ear, including the cochlea and two otolith organs—the utricle and saccule. The labyrinth also contains three semicircular canals—superior, posterior, and horizontal—that are oriented on different planes.
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Sensory impulses related to touch, pressure, vibration, and proprioception from various body parts, such as the limbs, trunk, neck, and posterior head, travel to the cerebral cortex through the posterior column-medial lemniscus pathway. The pathway’s name derives from the two white-matter tracts that convey the impulses: the spinal cord's posterior column and the brainstem's medial lemniscus. First-order sensory neurons extend their axons into the spinal cord, forming the...
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The human brain, a complex organ, is functionally divided into two cerebral hemispheres—left and right. These hemispheres are interconnected by a structure of paramount importance, the corpus callosum. This substantial bundle of neural fibers is not just a bridge between the hemispheres but a crucial element for the brain's comprehensive functioning. It enables efficient communication between the two hemispheres, allowing each side of the brain to control and receive sensory and motor...
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Using Unidirectional Rotations to Improve Vestibular System Asymmetry in Patients with Vestibular Dysfunction
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[Vestibular vertigo in hemispheric strokes].

M V Zamergrad1, D V Artemev1, O S Levin1

  • 1Russian Medical Academy of Continuous Professional Education, Moscow, Russia.

Zhurnal Nevrologii I Psikhiatrii Imeni S.S. Korsakova
|October 6, 2017
PubMed
Summary
This summary is machine-generated.

Acute vertigo can signal a hemispheric stroke, even without typical stroke symptoms. This case highlights left parietal-occipital ischemic stroke causing recurrent vestibular syndrome, emphasizing the need for neuroimaging in vertigo evaluation.

Keywords:
Halmagyi teststrokevertigovestibular cortex

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Area of Science:

  • Neurology
  • Neuroscience
  • Vascular Neurology

Background:

  • Acute vertigo is a common neurological symptom, often associated with peripheral vestibular disorders.
  • Hemispheric stroke is less commonly recognized as a cause of acute vertigo.
  • Understanding the link between central nervous system lesions and vestibular dysfunction is crucial for diagnosis.

Observation:

  • A 56-year-old patient presented with recurrent episodes of acute vestibular syndrome.
  • The patient's symptoms were ultimately attributed to a left hemispheric ischemic stroke.
  • Neuroimaging confirmed ischemic lesions in the left parietal-occipital region.

Findings:

  • Ischemic stroke in the parietal-occipital area can manifest as acute vestibular syndrome.
  • The case suggests that vestibular symptoms may be a primary presentation of hemispheric stroke.
  • The study reviews literature on hemispheric stroke and acute vertigo.

Implications:

  • Clinicians should consider hemispheric stroke in the differential diagnosis of acute vertigo, especially in older adults or those with vascular risk factors.
  • Prompt neuroimaging is essential for patients with unexplained or recurrent vertigo to rule out central causes.
  • Further research is needed to elucidate the precise mechanisms linking hemispheric lesions to vestibular symptoms.