Hearing: A gene for deaf ears?

Slides:



Advertisements
Similar presentations
1 Chapter 53 Molecular Biology of Hearing and Balance Copyright © 2012, American Society for Neurochemistry. Published by Elsevier Inc. All rights reserved.
Advertisements

Hearing Anatomy of the auditory pathway Hair cells and transduction of sound waves Regional specialization of the cochlea to respond to different frequencies.
Auditory Transduction How the ear converts acoustic energy into a neural response.
The Vestibule The utricle extends into the _ These sacs: – House ___________________________________ called maculae – Respond to _______________________________.
Frequency representation Part 2 Development of mechanisms involved in frequency representation.
A differentially amplified motion in the ear for near-threshold sound detection Fangyi Chen, Xiaorui Shi & Alfred L Nuttall JUNE 2011 NATURE NEUROSCIENCE.
Anatomy of the Ear Region
Hearing and Deafness Anatomy & physiology. Protection Impedance match Capture; Amplify mid-freqs Vertical direction coding Frequency analysis Transduction.
Hearing and Deafness Sarah Todd BIO February 2006
Human Biology Sylvia S. Mader Michael Windelspecht
THE INNER EAR Two Sensory Divisions; one dedicated to hearing, the other to maintaining balance Vestibular Division - The balance organs - SC Canals -
Figure 13.1 The periodic condensation and rarefaction of air molecules produced by a tuning fork neuro4e-fig jpg.
Inner Ear 2.
Transmission of Sound to the Inner Ear The route of sound to the inner ear follows this pathway: – Outer ear – Middle ear – Inner ear scalas vestibuli.
Review of Cochlear Anatomy Bony Capsule Bony Capsule Semicircular Canals Semicircular Canals Vestibule Vestibule Scala Tympani Scala Tympani Scala Vestibuli.
1 Organ of Corti 2 Organ of Corti (limbus) 3 Organ of Corti (tectorial memb.)
CHAPTER 49 SENSORY AND MOTOR SYSTEMS Copyright © 2002 Pearson Education, Inc., publishing as Benjamin Cummings Section D: Hearing And Equilibrium 1. The.
Bio 449Lecture 11 - Sensory Physiology IIISep. 20, 2010 Somatosensory system (conclusion) Equilibrium Audition - the ear Structure Function Terms to Know.
Vestibular Apparatus and Equilibrium
 The receptors of the ear are the mechanoreceptors.  These receptors respond to physical forces such as gross movements that disturb fluids that are.
Hearing The Auditory Systems
Copyright © 2004 Pearson Education, Inc., publishing as Benjamin Cummings H UMAN P HYSIOLOGY Sensory Physiology_hearing.
The Deaf Jerker Mouse Has a Mutation in the Gene Encoding the Espin Actin-Bundling Proteins of Hair Cell Stereocilia and Lacks Espins Lili Zheng, Gabriela.
Sound Waves Sound is created when objects vibrate. This vibration causes molecules in the surrounding medium to vibrate as well. This, in turn, causes.
The Ear Histology doesn’t get better than this!. Anatomy of the Ear.
Sense organs. The Audiovestibular organ 1.Taste buds 2.Audiovestibular nalizator 3.Audiovestibular organ 4.External ear 5.Middle ear 6.Internal ear: a)
Labyrinths contain Three parts Three parts Semicircular canals Semicircular canals Vestibular system Vestibular system Vestibule Vestibule Cochlea Auditory.
Ear Ossicles Malleus, incus, and stapes Transmit vibrations to the oval window Dampened by the tensor tympani and stapedius muscles.
The auditory and vestibular systems. A
HISTOLOGY REVIEW Eye and Ear
Schematic drawing showing sound signal transductions in the mammalian ear A: schematic diagram showing the basic anatomy of a mammalian ear. Schematic.
Anatomy of the Sensorineural Mechanism
Anatomy of the Sensorineural Mechanism
A, Representation of the human inner ear
Sensory Mechanism Marie Černá.
Bio& 241 A&P 1 Unit 4 /Labs 4 and 5.
Middle Ear Functions Impedance Matching -- amplification of sounds to overcome difference in impedance between the air of EAC and the fluid of the inner.
Peripheral auditory mechanisms
___________ = middle ear infection
The Auditory Pathway This graphic depicts the events in the stimulation of auditory receptors, from channeling sound waves into the external ear and onto.
Sensory and Motor Mechanisms
SENSORY PHYSIOLOGY: THE EAR
Human Anatomy & Physiology I
Structure of the Inner Ear and Its Mechanical Response
The Human Ear.
Auditory System Lecture 13.
Scala vestibuli Scala media Scala tympani. Scala vestibuli Scala media Scala tympani.
Volume 12, Issue 13, Pages (July 2002)
The cochlea Current Biology
Anatomy of the Sensorineural Mechanism
Hearing Impairment: A Panoply of Genes and Functions
Histology Slides for Special Senses
Sensorineural Deafness and Pigmentation Genes
HISTOLOGY REVIEW Eye and Ear
Detection of Cochlear Amplification and Its Activation
1-18 Open your notes to page 24. I will be stamping this page for questions Copy the following EQ onto a new page of notes (page 27) EQ: what is the.
Hearing Mechanics: A Fly in Your Ear
The mechanical cell Current Biology
Antigen-Presenting Cells: Professionals and amateurs
Negative Feedback Mechanisms and Their Roles during Pattern Formation
Mouse Otocyst Transuterine Gene Transfer Restores Hearing in Mice With Connexin 30 Deletion-associated Hearing Loss  Toru Miwa, Ryosei Minoda, Momoko.
Donna M. Martin, Yehoash Raphael  Molecular Therapy 
Hearing The Auditory Systems
Volume 106, Issue 11, Pages (June 2014)
Fig. 1. Prestin in mouse outer hair cells is localized along the lateral wall of the cell along with β-catenin and Na/K ATPase.Shown are cartoons of the.
Hair-Cell Mechanotransduction and Cochlear Amplification
Volume 24, Issue 1, Pages (January 2016)
Ears.
A Cornucopia of Candidates for Deafness
Molecular Therapy - Methods & Clinical Development
Presentation transcript:

Hearing: A gene for deaf ears? Jonathan Ashmore  Current Biology  Volume 5, Issue 7, Pages 716-718 (July 1995) DOI: 10.1016/S0960-9822(95)00142-4

Figure 1 Cross section of the mammalian cochlear duct (the organ of Corti is enlarged) showing possible targets of genetic mutations leading to hearing losses: hair cells (pink); tectorial membrane (light blue), which contains collagens and tectorins [5]; non-sensory cells of the organ of Corti (yellow); basilar membrane (lilac), which establishes cochlear mechanics; stria vascularis (orange), which maintains endocochlear potential; cochlear morphogenesis — for example, development of the embedding bone (light grey). Current Biology 1995 5, 716-718DOI: (10.1016/S0960-9822(95)00142-4)

Figure 2 Hair cell structure. Actin-filled stereocilia project from the apical end and are displaced by the stimulus. Myosin immunoreactivity is reported in hair cells on and below the stereocilia and below the nucleus. Inset shows tip-links between stereocilia. The tip-links, it is proposed [10], gate the mechano-electrical transducer channels in the membrane and are retensioned by a cluster of myosin molecules which continuously slide up along the actin core of the stereocilia. Current Biology 1995 5, 716-718DOI: (10.1016/S0960-9822(95)00142-4)