Utricle Saccule
Utricle Saccule - Related Videos
11:13
Dissection of Adult Mouse Utricle and Adenovirus-mediated Supporting-cell Infection
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Cited by 18 •
2012
Mechanosensory hair cells are the receptor cells of the inner ear. The best-characterized in vitro model system of mature mammalian hair cells utilizes organ cultures of utricles from adult mice. We present the dissection of the adult mouse utricle, and we demonstrate adenovirus-mediated infection of supporting cells in cultured utricles.
08:03
Gross and Fine Dissection of Inner Ear Sensory Epithelia in Adult Zebrafish (Danio rerio)
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Cited by 25 •
2009
The inner ear sensory epithelium of adult zebrafish is a good model system for understanding the mechanisms of hair cell regeneration in adult vertebrates. This protocol demonstrates the fine dissection of the epithelia, through which we can get tissue samples for studying the regenerative events at cellular and subcellular levels.
12:43
Patch Clamp Recordings in Inner Ear Hair Cells Isolated from Zebrafish
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Cited by 9 •
2012
The purpose of this video is to demonstrate procedures for obtaining healthy, intact hair cells from the inner ear organs of adult zebrafish and then using them for patch clamp studies aimed at characterizing the biophysical properties of their voltage-gated channels.
06:56
Near Infrared (NIr) Light Increases Expression of a Marker of Mitochondrial Function in the Mouse Vestibular Sensory Epithelium
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Cited by 4 •
2015
Mitochondrial dysfunction is a hallmark of cellular senescence. This paper uses non-invasive near-infrared (NIr) treatment to improve mitochondrial function in the aging mouse vestibular sensory epithelium.
11:52
An Isolated Semi-intact Preparation of the Mouse Vestibular Sensory Epithelium for Electrophysiology and High-resolution Two-photon Microscopy
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Cited by 5 •
2013
Analysis of vestibular hair cell function is complicated by their location deep within the hardest part of the skull, the petrous temporal bone. Most functional hair cell studies have used acutely isolated hair cells. Here we describe a semi-intact preparation of mouse vestibular epithelium for electrophysiological and two-photon microscopy studies.
FAQs
Otoconia enable movement of the gelatinous membrane when gravity or head motion changes its position. That displacement bends the hair cells embedded in the sensory epithelium, changing the signals carried by the vestibular nerve. Their role links a physical change in membrane position to neural information about movement and orientation.
Hair-cell bending changes vestibular nerve signaling, so the nervous system can distinguish altered conditions caused by gravity or linear movement. These changing signals provide information used to adjust posture and coordinate eye movements. The result is better spatial orientation and more stable vision while the head or body moves.
Signals from these otolith organs contribute to coordination between vestibular information, posture, and eye movements. When head position or linear acceleration changes, altered nerve signals help the body organize responses that keep vision stable. This connection explains why studying these organs is relevant to both balance control and motion perception.
Together, they provide complementary information about conditions affecting head position, gravity, and linear acceleration. Examining both helps researchers relate sensory-epithelium structure, otoconia movement, hair-cell responses, and vestibular nerve signaling to whole-system outcomes. This combined perspective is useful when investigating spatial orientation, posture, eye coordination, and balance impairment.
Research can examine how changes in the macula, gelatinous membrane, otoconia, or hair cells affect vestibular nerve signals and behaviorally relevant functions. These studies support investigation of vestibular disorders, balance impairment, and motion perception. They can also connect inner-ear structure with the development of systems responsible for orientation and movement.
Findings provide a basis for relating inner-ear anatomy and signaling to balance, posture, stable vision, and spatial orientation. In biology, they clarify how specialized sensory structures support movement-related functions and inner-ear development. In disorder-focused research, the same information helps frame questions about impaired balance and altered perception of motion.