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Related Concept Videos

The Vestibular System01:29

The Vestibular System

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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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Aging01:26

Aging

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Aging is a complex biological phenomenon influenced by various processes that affect cellular and systemic functions. Several prominent theories attempt to explain its mechanisms, highlighting cellular limitations, oxidative damage, and hormonal changes as central factors in aging.
Cellular Clock Theory
The cellular clock theory posits that the human lifespan is closely tied to the finite capacity of cells to divide, a phenomenon governed by telomeres, which are protective caps at the ends of...
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The Effect of Aging on Tissues01:19

The Effect of Aging on Tissues

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Several body functions deteriorate with age. The external signs of aging are easily identifiable. For example, the skin becomes dry, less elastic, and thins out, forming wrinkles. The skin of the face begins to appear looser due to a decrease in the levels of elastic and collagen fibers in the connective tissue. Additionally, melanin production in the hair follicle decreases with age, resulting in gray hair. Moreover, the senses of sight and hearing decline, so glasses and hearing aids may...
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Changes in the Appendicular Skeleton with Age01:09

Changes in the Appendicular Skeleton with Age

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The upper and lower limb initially develops as a small bulge called a limb bud, which appears on the lateral side of the early embryo. The upper limb bud appears near the end of the fourth week of development, with the lower limb bud appearing shortly after.
Initially, the limb buds consist of a core of mesenchyme covered by a layer of ectoderm. The ectoderm at the end of the limb bud thickens to form a narrow crest called the apical ectodermal ridge. This ridge stimulates the underlying...
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Pharmacodynamics in Geriatric Patients: Effects of Age01:27

Pharmacodynamics in Geriatric Patients: Effects of Age

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Age-related pharmacokinetic changes are extensively documented, but understanding age-related pharmacodynamic alterations is relatively limited. This knowledge gap can be partly attributed to the complexity of developing appropriate measures of drug responses compared to bioanalytical methods for determining drug concentrations.Most information regarding age-related differences in human pharmacodynamics originates from cross-sectional studies. However, these studies assume that observed mean...
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Peripheral Nervous System: Ganglia and Nerves01:24

Peripheral Nervous System: Ganglia and Nerves

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The Peripheral Nervous System (PNS) is a crucial component of the body's neural network, extending beyond the central nervous system (CNS) to bridge the gap between the CNS and the external environment. It encompasses nerves, ganglia, and sensory receptors.
Nerves
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Related Experiment Video

Updated: Jan 30, 2026

Behavioral Assessment of the Aging Mouse Vestibular System
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Behavioral Assessment of the Aging Mouse Vestibular System

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Aging and the peripheral vestibular system.

Lingchao Ji1, Suoqiang Zhai1,2

  • 1Medical School of Chinese PLA, Beijing, China.

Journal of Otology
|January 24, 2019
PubMed
Summary

Age-related vestibular dysfunction is common, with declining function and structural changes in the elderly. Further research is needed to understand the mechanisms of vestibular aging.

Area of Science:

  • Otolaryngology
  • Neuroscience
  • Gerontology

Background:

  • Auditory system aging is well-studied, but aging effects on the vestibular system are less understood.
  • The peripheral vestibular system plays a crucial role in balance and spatial orientation.
  • Vestibular dysfunction prevalence increases with age.

Purpose of the Study:

  • To review the prevalence, functional, and structural changes of the peripheral vestibular system in the elderly.
  • To identify knowledge gaps in understanding age-related vestibular degeneration.
  • To highlight the need for direct measurement of the peripheral vestibular system.

Main Methods:

  • Literature review of studies on age-related vestibular changes.
  • Analysis of functional tests like Vestibular Evoked Myogenic Potentials (VEMP) and Vestibulo-Ocular Reflex (VOR) gain during Head Impulse Test (HIT).
Keywords:
AgingVestibular organs

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  • Examination of structural changes including vestibular ganglion and otoconia.

    • Main Results:

    • Vestibular dysfunction prevalence significantly increases with age.
    • Age-related functional declines include decreased VEMP amplitudes, increased VEMP thresholds, and reduced VOR gain.
    • Conflicting results exist for VEMP latency and caloric tests due to methodological variations.
    • Structural changes involve loss of vestibular ganglion and otoconia; hair cell and subcellular changes require further investigation.

    Conclusions:

    • Vestibular dysfunction is a common consequence of aging.
    • Understanding the correlation between structural degeneration and functional decline is key to elucidating vestibular aging mechanisms.
    • Direct measurement methods are needed to overcome current testing limitations.