Academic literature on the topic 'Saccule and Utricle'

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Journal articles on the topic "Saccule and Utricle"

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Curthoys, Ian S., Ann M. Burgess, and Leonardo Manzari. "The Evidence for Selective Loss of Otolithic Function." Seminars in Neurology 40, no. 01 (2019): 033–39. http://dx.doi.org/10.1055/s-0039-3402064.

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AbstractRecent advances in vestibular testing now permit functional testing of all peripheral vestibular sense organs (all three semicircular canals, utricle, and saccule). This makes it possible to identify patients with isolated dysfunction of the utricle or saccule, even though parallel pathways for vestibular information are ultimately integrated centrally. Selective, isolated unilateral loss of utricular function as measured by ocular vestibular-evoked myogenic potentials (VEMPs) has been observed in patients with normal semicircular canal function as measured by the video head impulse te
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Lozier, Nicholas R., and Joseph A. Sisneros. "Ontogeny of Inner Ear Saccular Development in the Plainfin Midshipman (Porichthys notatus)." Brain, Behavior and Evolution 95, no. 6 (2020): 330–40. http://dx.doi.org/10.1159/000516477.

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The auditory system of the plainfin midshipman fish (<i>Porichthys notatus</i>) is an important sensory system used to detect and encode biologically relevant acoustic stimuli important for survival and reproduction including social acoustic signals used for intraspecific communication. Previous work showed that hair cell (HC) density in the midshipman saccule increased seasonally with reproductive state and was concurrent with enhanced auditory saccular sensitivity in both females and type I males. Although reproductive state-dependent changes in HC density have been well characte
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Clarke, A. H., U. Schönfeld, and K. Helling. "Unilateral examination of utricle and saccule function." Journal of Vestibular Research 13, no. 4-6 (2003): 215–25. http://dx.doi.org/10.3233/ves-2003-134-606.

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Attention is directed towards the recently developed unilateral tests of saccular and utricular function. Together with the now widely used head-thrust test and the standard caloric test for semicircular canal function, these provide for a more comprehensive unilateral examination of labyrinth function. The efficacy of vestibular evoked myogenic potentials (VEMP) as a direct unilateral test of saccular function is currently being demonstrated in an increasing number of reports. Furthermore, the relevant neuronal pathways have been delineated in animal studies, so that all evidence points to th
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Hageman, Kristin N., Margaret R. Chow, Dale Roberts, et al. "Binocular 3D otolith-ocular reflexes: responses of chinchillas to prosthetic electrical stimulation targeting the utricle and saccule." Journal of Neurophysiology 123, no. 1 (2020): 259–76. http://dx.doi.org/10.1152/jn.00883.2018.

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From animal experiments by Cohen and Suzuki et al. in the 1960s to the first-in-human clinical trials now in progress, prosthetic electrical stimulation targeting semicircular canal branches of the vestibular nerve has proven effective at driving directionally appropriate vestibulo-ocular reflex eye movements, postural responses, and perception. That work was considerably facilitated by the fact that all hair cells and primary afferent neurons in each canal have the same directional sensitivity to head rotation, the three canals’ ampullary nerves are geometrically distinct from one another, an
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Helling, Kai, Hans Scherer, Stefan Hausmann, and Andrew H. Clarke. "Otolith mass asymmetries in the utricle and saccule of flatfish." Journal of Vestibular Research 15, no. 2 (2005): 59–64. http://dx.doi.org/10.3233/ves-2005-15201.

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The otolith mass of the saccules and utricles of plaice, Pleuronectes platessa (n = 39) and turbot, Psetta maxima (n = 21) was measured using an electronic microbalance. In the right-eyed plaice, the left utricular otoliths were found to be significantly heavier than the right (p < 0.0001), whereas no significant difference was found between left and right saccular otoliths (p < 0.751). In the left-eyed turbot, both the right utricular and saccular otoliths were found to be significantly heavier (in both cases, p < 0.0001). While the gene and regulative protein responsible for the per
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Pauw, Bernard K. H., Anita M. Pollak, and Ugo Fisch. "Utricle, Saccule, and Cochlear Duct in Relation to Stapedotomy." Annals of Otology, Rhinology & Laryngology 100, no. 12 (1991): 966–70. http://dx.doi.org/10.1177/000348949110001203.

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This study was performed to determine the area in which and the circumstances under which stapedotomy can be relatively safely performed. Measurements were made from central areas of the medial surface of the stapedial footplate to the utricle, the saccule, and the cochlear duct in 10 normal and 11 otosclerotic temporal bones. The mean distances to the utricle ranged from 1.9 to 2.4 mm, and those to the saccule from 1.7 to 2.1 mm. The minimal distance to the utricle was measured from the posterior (0.58 mm) and superior (0.62 mm) borders of the stapedial footplate. The minimal distances to the
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Papathanasiou, Eleftherios S. "Ocular vestibular evoked myogenic potentials (OVEMPs): Saccule or utricle?" Clinical Neurophysiology 123, no. 2 (2012): 216. http://dx.doi.org/10.1016/j.clinph.2011.06.013.

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Morsli, H., F. Tuorto, D. Choo, M. P. Postiglione, A. Simeone, and D. K. Wu. "Otx1 and Otx2 activities are required for the normal development of the mouse inner ear." Development 126, no. 11 (1999): 2335–43. http://dx.doi.org/10.1242/dev.126.11.2335.

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The Otx1 and Otx2 genes are two murine orthologues of the Orthodenticle (Otd) gene in Drosophila. In the developing mouse embryo, both Otx genes are expressed in the rostral head region and in certain sense organs such as the inner ear. Previous studies have shown that mice lacking Otx1 display abnormal patterning of the brain, whereas embryos lacking Otx2 develop without heads. In this study, we examined, at different developmental stages, the inner ears of mice lacking both Otx1 and Otx2 genes. In wild-type inner ears, Otx1, but not Otx2, was expressed in the lateral canal and ampulla, as we
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Liu, Huizhan, and Lidong Zhao. "Recording potentials from scala media, saccule and utricle in mice." Journal of Otology 10, no. 2 (2015): 87–91. http://dx.doi.org/10.1016/j.joto.2015.09.003.

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Deng, Di, Xiaoqing Qian, Binjun Chen, et al. "Canonical Wnt Signaling Pathway on Polarity Formation of Utricle Hair Cells." Neural Plasticity 2021 (May 22, 2021): 1–11. http://dx.doi.org/10.1155/2021/9950533.

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As part of the inner ear, the vestibular system is responsible for sense of balance, which consists of three semicircular canals, the utricle, and the saccule. Increasing evidence has indicated that the noncanonical Wnt/PCP signaling pathway plays a significant role in the development of the polarity of the inner ear. However, the role of canonical Wnt signaling in the polarity of the vestibule is still not completely clear. In this study, we found that canonical Wnt pathway-related genes are expressed in the early stage of development of the utricle and change dynamically. We conditionally kn
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Dissertations / Theses on the topic "Saccule and Utricle"

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Akin, Faith W., Owen D. Murnane, Amber Pearson, Stephanie Byrd, and J. Kip Kelly. "Normative Data for the Subjective Visual Vertical Test during Centrifugation." Digital Commons @ East Tennessee State University, 2011. https://dc.etsu.edu/etsu-works/1784.

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Background: The otoliths act as gravito-inertial force sensors and contribute to the perception of spatial orientation. The perception of gravitational vertical can be assessed by asking a subject to adjust a light bar to the vertical. Prior to clinical use of the SVV (subjective visual vertical) test, normative data and test-retest reliability must be established. Purpose: To obtain normative data and d etermine the test-retest reliability for the SVV test performed in static and dynamic test conditions. Research Design: A descriptive design was used to obtain normative data. Study Sample:
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Akin, Faith W., and Owen D. Murnane. "Head Injury and Blast Exposure: Vestibular Consequences." Digital Commons @ East Tennessee State University, 2011. https://dc.etsu.edu/etsu-works/1786.

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Young adults are more likely to suffer blast injury and traumatic brain injury (TBI) than other age groups. This article reviews the literature on the vestibular consequences of blast exposure and TBI and concussion. In addition, the vestibular test findings obtained from 31 veterans with a history of blast exposure and/or mild TBI are presented. The authors discuss loss of horizontal semicircular canal function and postural instability related to head injury. Preliminary data suggest the novel theory that otolith organs are uniquely vulnerable to head injury and blast exposure.
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Chiarovano, Elodie. "Instabilité posturale chez les séniors : dysfonction vestibulaire périphérique ou centrale ?" Thesis, Sorbonne Paris Cité, 2016. http://www.theses.fr/2016USPCB006.

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L’instabilité posturale est fréquente chez les séniors et peut entrainer la chute. La chute chez les séniors est un problème majeur de santé publique. Les chiffres épidémiologiques sont éloquents : une personne sur trois âgées de plus de 70 ans fera une chute dans l’année. Les causes sont multifactorielles : ostéo-articulaire, visuelle, cognitive, vestibulaire…. Dans cette étude, nous nous sommes intéressés à l’évolution de la fonction des récepteurs vestibulaires périphériques avec l’âge et à la perception de rotation à partir des entrées canalaires horizontales (système vestibulaire central
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Hawkins, Raymond David. "Expression analysis of the regenerating utricle sensory epithelia : from microarrays to parsing pathways." 2005. http://edissertations.library.swmed.edu/pdf/HawkinsR050305/HawkinsRaymond.pdf.

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Books on the topic "Saccule and Utricle"

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Baloh, Robert W. Breuer’s Experiments on the Semicircular Canals and Otolith Organs. Oxford University Press, 2016. http://dx.doi.org/10.1093/med/9780190600129.003.0006.

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After his groundbreaking work in the mid-1860s, Josef Breuer continued to perform experiments on the inner ear balance receptors in animals. He studied the macules of fish, reptiles, and birds and noted that all these creatures had three macules arranged in the planes of the semicircular canals, perpendicular to one another. By contrast, mammals had only two macules located in the utricle (horizontal plane) and saccule (vertical plane), again perpendicular to each other. He developed the concept of “slip” to describe the movement of the otoconial membrane over the underlying sensory epithelium
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Baloh, Robert W. Introduction. Oxford University Press, 2016. http://dx.doi.org/10.1093/med/9780190600129.003.0001.

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The inner ear contains three major sensory receptors: the crista of the semicircular canals for sensing angular acceleration, the macule of the utricle and saccule for sensing linear acceleration, and the organ of Corti of the cochlea for sensing sound. Vertigo is an illusion of movement—usually spinning or turning but occasionally linear movement or tilt. Abnormalities of the inner ear or its connections in the brain cause an illusion of movement—vertigo. Benign paroxysmal positional vertigo (BPPV) is by far the most common cause of vertigo. Sudden violent spells of spinning are triggered by
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