Related Experiment Video
Updated: May 15, 2026
09:09
Cryosectioning and Immunostaining Mouse Inner Ear Tissue: From Embryonic to Adult Stages
Published on: April 11, 2025
[Association between cerumen impaction, cognitive function and hearing in Japanese elderly].
Saiko Sugiura1, Yasue Uchida, Tsutomu Nakashima
1Department of Otorhinolaryngology, National Center for Geriatrics and Gerontology.
Nihon Ronen Igakkai Zasshi. Japanese Journal of Geriatrics
|December 28, 2012
Summary
Approximately 10% of Japanese elderly experience cerumen impaction, which is linked to poorer hearing and lower cognitive function scores (Mini-Mental State Examination). This study highlights the importance of addressing ear health in older adults.
Area of Science:
- Gerontology
- Otolaryngology
- Cognitive Science
Context:
- Cerumen impaction is a common condition in the elderly.
- Cognitive decline and hearing impairment are prevalent issues in aging populations.
- The relationship between cerumen impaction, cognitive function, and hearing loss in Japanese elderly requires further investigation.
Purpose:
- To determine the prevalence of cerumen impaction in Japanese elderly individuals.
- To investigate the association between cerumen impaction and cognitive function, as measured by the Mini-Mental State Examination (MMSE).
- To examine the relationship between cerumen impaction and hearing impairment.
Summary:
- This study analyzed data from 792 community-dwelling Japanese elderly participants (aged 60-88) from the National Institute for Longevity Sciences, Longitudinal Study of Aging (NILS-LSA).
- Cerumen impaction was identified in 10.7% of participants and was significantly associated with poorer hearing levels (p=0.0001) and lower MMSE scores (p=0.02) after adjusting for relevant factors.
- Individuals with an MMSE score below 24 had a higher frequency of cerumen impaction (23.3%).
Impact:
- Findings suggest that cerumen impaction is a prevalent issue in Japanese elderly, affecting approximately 10% of this demographic.
- The study establishes a significant link between cerumen impaction, impaired hearing, and reduced cognitive function in older adults.
- This research underscores the potential benefits of routine otoscopic examinations and cerumen management in elderly care to support hearing and cognitive health.
Related Concept Videos
01:31Hearing
When we hear a sound, our nervous system is detecting sound waves—pressure waves of mechanical energy traveling through a medium. The frequency of the wave is perceived as pitch, while the amplitude is perceived as loudness.
01:17Auditory Perception
The auditory system is essential for sound perception, utilizing various critical structures. When sound waves enter the outer ear, they travel through the ear canal and cause the eardrum to vibrate. These vibrations are then transmitted to the middle ear, where three tiny bones – the malleus, incus, and stapes – amplify the sound. This amplification is crucial, as it ensures that the sound vibrations are strong enough to be conveyed to the inner ear. These vibrations then reach the cochlea, a...
01:11The Auditory Ossicles
The auditory ossicles of the middle ear transmit sounds from the air as vibrations to the fluid-filled cochlea. The auditory ossicles consist of two malleus (hammer) bones, two incus (anvil) bones, and two stapes (stirrups), one on each side. These bones develop during the fetal stage and are the ones to ossify first. They are fully mature at birth and do not grow afterward.
The aptly named stapes look very much like a stirrup. The three ossicles are unique to mammals, and each plays a role in...
The aptly named stapes look very much like a stirrup. The three ossicles are unique to mammals, and each plays a role in...
01:30Cognitive Development During Adulthood
Cognitive development continues throughout adulthood, undergoing significant shifts across early, middle, and late stages. Individual transition occurs from adolescent idealism to pragmatic and adaptable thinking in early adulthood. During this period, individuals learn to integrate personal beliefs with the recognition that other perspectives are equally valid. Exposure to the complexities of modern society, diverse experiences, and higher education contribute to this adaptive thought process,...