Sensory - Balance Development: Difference between revisions
From Embryology
Line 7: | Line 7: | ||
==Some Recent Findings== | ==Some Recent Findings== | ||
* '''Saccular function and motor development in children with hearing impairments'''<ref><pubmed>20148080</pubmed></ref>"The purpose of this study was to evaluate saccular function in children with hearing impairments using the Vestibular Evoked Myogenic Potential (VEMP). The impact of the saccular hypofunction on the timely maturation of normal balance strategies was examined using the Movement Assessment Battery for Children (Movement ABC). ...No VEMP was evoked in two thirds of the hearing impaired (HI) children in response to the bone-conducted stimulus. Children who were reportedly hearing impaired since birth had significantly poorer scores when tested with the Movement ABC." | |||
==Inner Ear Labyrinth== | ==Inner Ear Labyrinth== |
Revision as of 00:58, 11 June 2010
Introduction
Some Recent Findings
- Saccular function and motor development in children with hearing impairments[1]"The purpose of this study was to evaluate saccular function in children with hearing impairments using the Vestibular Evoked Myogenic Potential (VEMP). The impact of the saccular hypofunction on the timely maturation of normal balance strategies was examined using the Movement Assessment Battery for Children (Movement ABC). ...No VEMP was evoked in two thirds of the hearing impaired (HI) children in response to the bone-conducted stimulus. Children who were reportedly hearing impaired since birth had significantly poorer scores when tested with the Movement ABC."
Inner Ear Labyrinth
- Cochlea - Otic vesicle - Otic placode (ectoderm)
- Semicircular canals - Otic vesicle - Otic placode (ectoderm)
- Saccule and utricle - Otic vesicle - Otic placode (ectoderm)
Cranial Nerve VIII
- Auditory component - Otic vesicle and neural crest (ectoderm)
- Vestibular component - Otic vesicle and neural crest (ectoderm)
- The inner ear is derived from a pair of surface sensory placodes (otic placodes) in the head region.
- These placodes fold inwards forming a depression, then pinch off entirely from the surface forming a fluid-filled sac or vesicle (otic vesicle, otocyst).
- The vesicle sinks into the head mesenchyme some of which closely surrounds the otocyst forming the otic capsule.
- The otocyst finally lies close to the early developing hindbrain (rhombencephalon) and the developing vestibulo-cochlear-facial ganglion complex.
Links: Inner Ear
References
- ↑ <pubmed>20148080</pubmed>
Reviews
Articles
- Development of the mouse cochlea database (MCD). Santi PA, Rapson I, Voie A. Hear Res. 2008 Sep;243(1-2):11-7. Epub 2008 May 25. PMID:18603386 | PMC2628570
- A mathematical model of human semicircular canal geometry: a new basis for interpreting vestibular physiology. Bradshaw AP, Curthoys IS, Todd MJ, Magnussen JS, Taubman DS, Aw ST, Halmagyi GM. J Assoc Res Otolaryngol. 2010 Jun;11(2):145-59. Epub 2009 Dec 1. PMID: 19949828
Search PubMed
May 2010 "Inner Ear Development" All (4027) Review (452) Free Full Text (750)
Search Pubmed: Balance Development | Vestibular Development |Semicircular Canal Development
External Links
- Neuroscience Neuroscience - The Inner Ear
Glossary Links
- Glossary: A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | Numbers | Symbols | Term Link
Cite this page: Hill, M.A. (2024, June 20) Embryology Sensory - Balance Development. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/Sensory_-_Balance_Development
- © Dr Mark Hill 2024, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G