otoconia

Bones in the inner ear, not the otoconia, serve much the same function for humans as the otoliths do for fish.

Embedded in this membrane are calcium carbonate crystals, called otoconia, or "ear rocks."

The otoconia floats freely in the inner ear fluid, causing disorientation and vertigo.

In mice lacking the otoconia of the utricle and saccule, this retained acoustic sensitivity is lost.

The Epley maneuver (particle repositioning) does not address the actual presence of the particles (otoconia), rather it changes their location.

There is compelling evidence that free floating otoconia, probably displaced from the otolithic membrane in the utricle are the main cause of this disequilibrium.

Within the labyrinth of the inner ear lie collections of calcium crystals known as otoconia or otoliths.

Treatment for the disorder includes antihistamines and anticholinergics, and the disorder often goes away without surgical removal of the free otoconia.

They contain otoliths (or otoconia), calcium carbonate stones, which are deposited on a gelatinous membrane that lies over the sensory hair cells.

The hair cells of the otolithic organs are blanketed with a jelly-like layer studded with tiny calcium stones called otoconia.

Furthermore, the appearance of otoconia in the ES was greatly accelerated in the larvae reared in microgravity.

The device is filled with fluid and a particle representing the otoconia (loose hard particles) associated with BPPV.

He provided a comprehensive description of the utricle and saccule of the inner ear, and is credited for introducing the terms "otoconia" and "helicotrema".

The otoconia crystals in the otoconia layer rest on a viscous gel layer, and are heavier than their surroundings.

Contrary to an opinion sometimes expressed, people do not have rocks in their heads, although their inner ears do contain some microscopic grains of calcium carbonate called otoconia.

Statoconia (also called otoconia) are numerous grains, often spherical in shape, between 1-50 microns; collectively, statoconia are also sometimes termed a statocyst.

Benign paroxysmal positional vertigo, or BPPV, is a disorder caused by the breaking off of a piece of otoconia from the otoliths.

The semicircular canals encode head velocity signals, or angular acceleration, while the otoconia encode linear acceleration signals and gravitational signals.

Recent pathological findings also suggest that the displaced otoconia typically settle in the posterior semicircular canal in the cupula of the ampulla and render it sensitive to gravity.

When the patient is passively positioned from an upright seated posture down to a lying (supine) position, this momentum helps to dislodge the otoconia (crystal) embedded in the cupula.

As the head is tilted forward or backward, the otoconia move the hair cells in a similar fashion to the semicircular canal fluid movement and cause depolarization of the hair cells.

The material within, if present in relatively large particles, is called otoltths ("earstone" G), and if present in fine particles is called otoconia (oh'toh-koh'nee-uh; "ear-dust" G).

Following the treatment, the clinician may provide the patient with a soft collar, often worn for the remainder of the day, as a cue to avoid any head positions that may once again displace the otoconia.

The cause of BPPV is the presence of normal but misplaced calcium crystals called otoconia, which are normally found in the utricle and saccule (the otolith organs) and are used to sense movement.

Analysis of three-dimensional reconstructions showed that flight-reared larvae had a larger mean endolymphatic sac (ES) and duct volume and a larger average volume of otoconia within the sac when compared to similarly staged ground controls.