ABR pitfalls, quality, etc. Karsten Plotz
|
|
- Andrew Pope
- 6 years ago
- Views:
Transcription
1 ABR pitfalls, quality, etc. Karsten Plotz Professor for ENT, Phoniatrics and Pedaudiology Dpt. Technology and Human Health TGM Institute for Hearing Technology and Audiology IHA Jade-University of Applied Sciences Oldenburg Germany - tgm.jade-hs.de
2 pitfalls electrodes movements of the eyes potentials from other parts of the body, neck, chewing, heart beat, brain, electric currency, AC-components, mobile phone failure in the setup All this makes low signal or high noise and degrades the signal to noise-ratio S/N
3 epidemiology The rate of hard hearing in newborn childs is round about 2 to 6 out of healthy babies. This rate differes a bit between countries and depends on the health system and health care in each country round about a mean of 3-4 hard hearing children in healthy newborn children. Phonak Pedaudiology Conference, Berlin, 17 th June
4 hearing diagnostics There is a special program for hearing screening and hearing diagnostics. It is nesessary to maintain a step-by-step program to obtain an early hearing threshold within the first 6 month of life. Usually we start at day two with OAEmeasurements But for closer details see the important site: NHS Screening Programmes Newborn Hearing 4
5 TEOAE Transitorisch Evozierte OAE Lautsprecher Stapes Click/Chirp Basilarmembran Trommelfell Mikrofon Trennung von Stimulus und Antwort im Zeitbereich 5
6 6
7 TEOAE Prävalenz If you want a 70% degree the threshold is between 0 to 25 db SNHL In screening procedures additional 5 to 10dB worser that means PASS is still possible with a Hearing loss (SNHL ) of 30 to 35 db 7
8 hearing diagnostics If the answer is FAIL, than additional sreening with OAE or ABR ist nessesary within the next 2 to 6 weeks. 8
9 hearing diagnostics Auditory brainstem response An other screening method looks to the neural response to acoustic stimuli. This ist an screening with auditory brainstem responses. The sreening shows again PASS or in the worse case FAIL, but not looking to the response of the OHC instead of analysing a signal received from skull electrodes like an EEG-measure. 9
10 Imdedence of the electrodes 1 kω 2 kω 5 kω > 5-10 kω Should be lower than 5 kω But more important: no or lowest differences between the used four electrodes (diff << 1 kω) otherwise high probability of strong ACcomponents
11 11
12 i/o function, level to latency of Wave V
13 Morphology of recordings with different chirps 13
14 Morphology of recordings with different notch noise stimuli
15 i/o-function for NN-recordings
16 Morphology of low-chirp-recording
17 BERA-Film 17
18 Measurement puzzle The task ist: Look for middle ear problems OME and/or CHL Measuring the threshold at least in two or three fequency-regions or better at 500 Hz, 1, 2 and 4 khz Differentiation of CHL, SNHL or mixed types Latency detection of JI, JIII and JV Maturation or central processing IPL interpeak latencies, in I-III and III-V-differences 18
19 auditory system Short glimpse to the auditory system Phonak Pedaudiology Conference, Berlin, 17 th June
20 1.1.1 The outer Ear- middle ear sound goes through the ear canal to the tympanic membran to the ossicular chain and to the Cochlea Quelle: Plotz WS08_09
21 1.1.1 travelling wave Inpedance air to water Pressure differences between scala vestibuli an scala tympani Travelling wave on the basal membrane goes from basis to apex Quelle: Plotz WS 2007/08
22 SNHL in a population based sample hearing loss in high frequencies affects development of speech and binaural hearing Cocktail-Party-Effect no impairment according to WHO (grey) Flat shape: 45% High frequency: 19% Ski-slope: 25% Middle Frequency: 0,3% Low Frequency: 0,3% HoerStat, von Gablenz & Holube (2016, in press) HNO I; Plotz; 22
23 hearing diagnostics detection of ABR-threshold. 23
24 Conductive hearing loss CHL OME and related CHL leads to FAIL during UNHS. The rate of OME in neonates is about 5% Baldwin&Watkin, Ear Hear 2013 ABR-threshold about 50dB, i/o-function of JV with 30 db-shift and >1 ms longer latencies 24
25 Definition of ABR threshold and ABR-offset Visually detected ABR-threshold The ABR-offset is the difference between the visually detected ABRthreshold and the true psychoacoustic threshold
26 hearing diagnostics the frequency-specific ABR measures. 26
27 Tonotopy of the basilar membrane 500 Hz Basis Apex High stimulus, like Click at 1-4 khz Basis Apex from Promenade `round the cochlea
28 Mustermessung Tieffrequente Chirp-BERA vs. NN-BERA-500 LChirp-Mask NN-500 Hz
29 Fallbeispiel: Low-Chirp-BERA vs. Notched- Noise-BERA 500 Tonaudiogramm Erwachsener mit Schrägabfall 29
30 Estimated hearing loss ehl ehl estimation in regard to: Differences between the stimulus level delivered to a baby compared to an adult. transducer stimulus corrections. These are different for different types of transducer (headphones, insert earphones and bone conductors). Differences between ABR thresholds and true hearing thresholds (defined as 50% detection of the psychoacoustic response) - i.e. ABR offsets. Taken from: Guidelines for the early audiological assessment and management of babies referred from the Newborn Hearing Screening Programme, Version 3.1, 30
31 What kind of hearing loss? 31
32 Potential sources of the peaks in ABR-recordings J J6 J5 4 J 3 J 2 J 1 Peaks of ABR, Jewitt I to VI: Welle VI: Colliculus inferior Welle V: Lemniscus lateralis (ascending part) Welle IV: upper Olivary complex and inferior part of Lemniscus lateralis Welle III: Nucleus cochlearis ventralis Welle II: auditory nerve Welle I: SGC Spiralganglion 32
33 Reference: IPL inter peak lantency
34 BERA child 4;11 years Nice recording Each peak ist visible Threshold at 30dB Ok or not?
35 BERA child 4;11 years JI o.k. III too late V too late I-III 2,5-2,6ms III-V too long I-V 4,8-5,1 ms
36 FF- Reaktionsschwelle
37 proposal We found the most reliable results in the following measures: 1. otoscopy and tymponometry 2. CLICK-ABR for general purposes, neurodiagnostics and threshold in the 1 2 khz-region 3. low-chirp for threshold in the 500 Hz-region 4. and 4kHz notch-noise ABR in the high frequencies 37
38 The end Many thanks for your attention! and thanks to my colleagues: Manuela Hagen, Petra von Gablenz, Inga Holube and Manfred Mauermann from Oldenburg Izet Baljic from Erfurt 38
39 Literature NHS Screening Programmes Newborn Hearing AG-ERA; Empfehlungen der AGERA zur pädaudiologischen Konfirmationsdiagnostik (follow-up) nach nicht bestandenem Neugeborenen- Hörscreening DGPP; Phoniatrisch-pa daudiologischer Konsensus zu einem universellen Neugeborenen-Ho rscreening in Deutschland, Baldwin, M., & Watkin, P. (2013). Predicting the type of hearing loss using click auditory brainstem response in babies referred from newborn hearing screening. Ear and Hearing, 35(1), Damm, M., Jayme, K. P., & Klimek, L. (2013). Recurrent otitis media with effusion in childhood, 61(10), Hoth, S., Mühler, R., Neumann, K., & Walger, M. (2015). Objektive Audiometrie im Kindesalter. Springer-Verlag.
Educational Module Tympanometry. Germany D Germering
Educational Module anometry PATH medical Germany D-82110 Germering Our educational modules 1 are made for providing information on how the hearing organ works and which test procedures are used to test
More informationNewborn Screening and Middle Ear Problems
Lisa L. Hunter 1, Douglas H. Keefe 2, M. Patrick Feeney 3;4, David K. Brown 1, Jareen Meinzen-Derr and Denis F. Fitzpatrick 2 1 Cincinnati Children's Hospital Medical Center, 2 Boys Town National Research
More informationInternational Bureau for Audiophonology
BIAP Recommendation 12/8 Part 12/8.0 Audiometric procedures in the first year of life Introduction and Overview General foreword This document presents a Recommendation by the International Bureau for
More informationHearing Screening, Diagnostics and Intervention
JCIH Newborn Hearing Screening Guidelines 1-3-6 Model By 1 month Screenhearing Hearing Screening, Diagnostics and Intervention By 3 months: Evaluate hearing and complete diagnosticaudiology and otolaryngology
More informationABR assesses the integrity of the peripheral auditory system and auditory brainstem pathway.
By Prof Ossama Sobhy What is an ABR? The Auditory Brainstem Response is the representation of electrical activity generated by the eighth cranial nerve and brainstem in response to auditory stimulation.
More informationAuditory System. Barb Rohrer (SEI )
Auditory System Barb Rohrer (SEI614 2-5086) Sounds arise from mechanical vibration (creating zones of compression and rarefaction; which ripple outwards) Transmitted through gaseous, aqueous or solid medium
More informationHEARING IMPAIRMENT LEARNING OBJECTIVES: Divisions of the Ear. Inner Ear. The inner ear consists of: Cochlea Vestibular
HEARING IMPAIRMENT LEARNING OBJECTIVES: STUDENTS SHOULD BE ABLE TO: Recognize the clinical manifestation and to be able to request appropriate investigations Interpret lab investigations for basic management.
More informationAuditory System Feedback
Feedback Auditory System Feedback Using all or a portion of the information from the output of a system to regulate or control the processes or inputs in order to modify the output. Central control of
More informationUpdates to NHSP guidance for post-screening diagnostic testing Update 1: August 2015 Author: BSA Electrophysiology Special Interest Group (BSA EP SIG)
Updates to NHSP guidance for post-screening diagnostic testing Update 1: August 2015 Author: BSA Electrophysiology Special Interest Group (BSA EP SIG) Introduction This document is intended to update and
More informationAudiology (Clinical Applications)
(Clinical Applications) Sasan Dabiri, M.D. Assistant Professor Department of Otorhinolaryngology Head & Neck Surgery Amir A lam hospital Tehran University of Medical Sciences Last Updated in February 2015
More informationHEARING. Structure and Function
HEARING Structure and Function Rory Attwood MBChB,FRCS Division of Otorhinolaryngology Faculty of Health Sciences Tygerberg Campus, University of Stellenbosch Analyse Function of auditory system Discriminate
More informationThe Verification of ABR Response by Using the Chirp Stimulus in Moderate Sensorineural Hearing Loss
Med. J. Cairo Univ., Vol. 81, No. 2, September: 21-26, 2013 www.medicaljournalofcairouniversity.net The Verification of ABR Response by Using the Chirp Stimulus in Moderate Sensorineural Hearing Loss SOHA
More informationAuditory Physiology Richard M. Costanzo, Ph.D.
Auditory Physiology Richard M. Costanzo, Ph.D. OBJECTIVES After studying the material of this lecture, the student should be able to: 1. Describe the morphology and function of the following structures:
More informationCE-Chirp. Making ABR fast, accurate and clear! Stimulus Family
Making ABR fast, accurate and clear! Response amplitudes typically 50% larger than tone burst responses, with the potential to halve the test time CE-Chirp Stimulus Family The Gold standard for threshold
More informationQuick Guide - eabr with Eclipse
What is eabr? Quick Guide - eabr with Eclipse An electrical Auditory Brainstem Response (eabr) is a measurement of the ABR using an electrical stimulus. Instead of a traditional acoustic stimulus the cochlear
More informationRecommended Procedure Cochlear Microphonic Testing
Recommended Procedure Cochlear Microphonic Testing Date: January 2019 Due for review: January 2024 Recommended Procedure Cochlear Microphonic Testing BSA 2019 General foreword This document presents Practice
More informationKANSAS GUIDELINES FOR INFANT AUDIOLOGIC ASSESSMENT
KANSAS GUIDELINES FOR INFANT AUDIOLOGIC ASSESSMENT SoundBeginnings Early Hearing Detection and Intervention Program Kansas Department of Health & Environment 1000 SW Jackson Ste. 220 Topeka, Kansas 66612-1274
More informationBut, what about ASSR in AN?? Is it a reliable tool to estimate the auditory thresholds in those category of patients??
1 Auditory Steady State Response (ASSR) thresholds have been shown to be highly correlated to bh behavioral thresholds h in adults and older children with normal hearing or those with sensorineural hearing
More informationAudiological Diagnosis after Newborn Screening
Audiological Diagnosis after Newborn Screening Pr Hung THAI-VAN, M.D., Ph.D. President of the French Society of Audiology Department of Audiology & Otoneurological Evaluation (Head) Lyon University Hospital
More informationImplantable Treatments for Different Types of Hearing Loss. Margaret Dillon, AuD Marcia Adunka, AuD
Implantable Treatments for Different Types of Hearing Loss Margaret Dillon, AuD Marcia Adunka, AuD Implantable Technologies Types of hearing loss Bone-anchored devices Middle ear implantation Cochlear
More informationAdvanced. NEW! Four times faster DPOAE: concurrent measurement of both ears while recording two DPs simultaneously in each ear!
Advanced The all in one instrument for OAE, ABR, ASSR and Audiometry Advanced the modular approach! Designed, engineered and made in Germany. Configure your system with a choice of modules: TEOAE, DPOAE,
More informationChapter 11: Sound, The Auditory System, and Pitch Perception
Chapter 11: Sound, The Auditory System, and Pitch Perception Overview of Questions What is it that makes sounds high pitched or low pitched? How do sound vibrations inside the ear lead to the perception
More informationProvisional guidelines for using Auditory Steady State Responses (ASSR) in babies. July 2009
5 NEWBORN HEARING SCREENING AND ASSESSMENT Provisional guidelines for using Auditory Steady State Responses (ASSR) in babies 10 Suggested parameter values for recording frequency-specific ASSR using Natus
More informationEmissions are low-intensity sounds that may be detected in the external ear canal by a microphone
OAEs Emissions are low-intensity sounds that may be detected in the external ear canal by a microphone OAE is a pre-neural phenomenon They can be measured even when the 8 th cranial nerve is severely damaged
More informationThe Level Specific CE-Chirp
Authored by: David P. Speidel, M.S. FAAA Interacoustics US Introduction: Cutting edge technological advances are few and far between in the world of Audiology. It s hard to believe that the first introduction
More informationEvaluating ME Function via an Acoustic Power Assessment
Evaluating ME Function via an Acoustic Power Assessment Patricia Jeng, Ph.D., Jont Allen, Ph.D. Mimosa Acoustics Mel Gross, Au.D., Starkey Laboratories psj wbmepa the device PC board Ear probe Lap-top
More informationfirst described by Starr 1996 as a subgroup of patients with
Klinik und Poliklinik für Hals-, Nasen- und Ohrenkrankheiten, Plastische und Ästhetische Operationen Direktor: Prof. Dr. R. Hagen W. E. Shehata-Dieler, J. Müller, C. Völter, R. Hagen first described by
More informationNeuro-Audio Version 2010
ABR PTA ASSR Multi-ASSR OAE TEOAE DPOAE SOAE ECochG MLR P300 Neuro-Audio Version 2010 one device for all audiological tests Auditory brainstem response (ABR)/Brainstem evoked response audiometry (BERA)
More informationA Review of the Effectiveness of Otoacoustic Emissions for Evaluating Hearing Status After Newborn Screening
Otology & Neurotology 34:1058Y1063 Ó 2013, Otology & Neurotology, Inc. A Review of the Effectiveness of Otoacoustic Emissions for Evaluating Hearing Status After Newborn Screening Thomas Janssen ENT-Department,
More informationSOLUTIONS Homework #3. Introduction to Engineering in Medicine and Biology ECEN 1001 Due Tues. 9/30/03
SOLUTIONS Homework #3 Introduction to Engineering in Medicine and Biology ECEN 1001 Due Tues. 9/30/03 Problem 1: a) Where in the cochlea would you say the process of "fourier decomposition" of the incoming
More informationDetection of middle ear dysfunction using wideband acoustic tests in newborn hearing screening and diagnostic follow-up
Detection of middle ear dysfunction using wideband acoustic tests in newborn hearing screening and diagnostic follow-up Lisa L. Hunter 1, Douglas H. Keefe 2, M. Patrick Feeney 3;4, Denis F. Fitzpatrick
More informationMasker-signal relationships and sound level
Chapter 6: Masking Masking Masking: a process in which the threshold of one sound (signal) is raised by the presentation of another sound (masker). Masking represents the difference in decibels (db) between
More information10/2/2017. The Outer Ear THE EXTERNAL AUDITORY MEATUS
AUDITORY ANATOMY AND HIDDEN CLINICAL VARIABLES Presented by Lawrence R. Wierzbowski AuD DABNM FASNM IONM-P Neurophysiologist & Audiologist Avatrode LLC No Conflict of Interest AUDITORY SYSTEM ANATOMY The
More informationStudy of brainstem evoked response audiometry in sensorineural hearing deafness- A hospital based study
Original Research Article Study of brainstem evoked response audiometry in sensorineural hearing deafness- A hospital based study Swapnil Gosavi 1,*, James Thomas 2, G.D. Mahajan 3 1 Lecturer, MGM Medical
More informationAUDL GS08/GAV1 Signals, systems, acoustics and the ear. Pitch & Binaural listening
AUDL GS08/GAV1 Signals, systems, acoustics and the ear Pitch & Binaural listening Review 25 20 15 10 5 0-5 100 1000 10000 25 20 15 10 5 0-5 100 1000 10000 Part I: Auditory frequency selectivity Tuning
More informationAuditory Physiology PSY 310 Greg Francis. Lecture 29. Hearing
Auditory Physiology PSY 310 Greg Francis Lecture 29 A dangerous device. Hearing The sound stimulus is changes in pressure The simplest sounds vary in: Frequency: Hertz, cycles per second. How fast the
More informationPSY 310: Sensory and Perceptual Processes 1
Auditory Physiology PSY 310 Greg Francis Lecture 29 A dangerous device. Hearing The sound stimulus is changes in pressure The simplest sounds vary in: Frequency: Hertz, cycles per second. How fast the
More informationAcoustics, signals & systems for audiology. Psychoacoustics of hearing impairment
Acoustics, signals & systems for audiology Psychoacoustics of hearing impairment Three main types of hearing impairment Conductive Sound is not properly transmitted from the outer to the inner ear Sensorineural
More informationAudiology. Anita Gáborján MD, PhD.
Audiology Anita Gáborján MD, PhD. Scope of audiology Is there a hearing loss? (Tinnitus? Vertigo? Neurological symptom? Speech development? ) How severe is the hearing loss? What is the reason of the hearing
More informationJames W. Hall III, Ph.D.
Application of Auditory Steady State Response (ASSR) in Diagnosis of Infant Hearing Loss in the Era of Universal Newborn Hearing Screening James W. Hall III, Ph.D. Clinical Professor and Chair Department
More informationHearing. By Jack & Tori
Hearing By Jack & Tori 3 Main Components of the Human Ear. Outer Ear. Middle Ear. Inner Ear Outer Ear Pinna: >Visible part of ear and ear canal -Acts as a funnel to direct sound Eardrum: >Airtight membrane
More informationﺎﻨﺘﻤﻠﻋ ﺎﻣ ﻻا ﺎﻨﻟ ﻢﻠﻋ ﻻ ﻚﻧﺎﺤﺒﺳ اﻮﻟﺎﻗ ﻢﻴﻜﺤﻟا ﻢﻴﻠﻌﻟا ﺖﻧأ ﻚﻧا ﻢﻴﻈﻌﻟا ﷲا قﺪﺻ HEARING LOSS
قالوا سبحانك لا علم لنا الا ما علمتنا انك أنت العليم الحكيم صدق االله العظيم HEARING LOSS 1 Hearing loss: Deviation from normal hearing in one or both ears. Hearing handicap: This term refers to total
More informationOtoAcoustic Emissions (OAE s)
OtoAcoustic Emissions (OAE s) Phenomenon and applications in audiological diagnostics Measurement procedures TEOAE and DPOAE Physiological backgound, functional models Acknowledgment: several illustrations
More informationSRINIVAS (IJHSP), ISSN: 1, 2, PUBLICATION
BERA in Newborns with Hyperbilirubinemia Dr. Edwin Dias Professor and HOD, Department of Paediatrics, Srinivas Institute of Medical Sciences & Research Centre, Mangalore, India E-mail: dredwindias@ @gmail.comm
More informationRequired Slide. Session Objectives
Auditory Physiology Required Slide Session Objectives Auditory System: At the end of this session, students will be able to: 1. Characterize the range of normal human hearing. 2. Understand the components
More informationUnit VIII Problem 9 Physiology: Hearing
Unit VIII Problem 9 Physiology: Hearing - We can hear a limited range of frequency between 20 Hz 20,000 Hz (human hearing acuity is between 1000 Hz 4000 Hz). - The ear is divided into 3 parts. Those are:
More informationImproving the diagnostic power of otoacoustic emissions. Arturo Moleti Physics Department University of Roma Tor Vergata
Improving the diagnostic power of otoacoustic emissions Arturo Moleti Physics Department University of Roma Tor Vergata The human ear Ear canal: resonant cavity Middle ear: impedance adapter and pressure
More informationau/images/conductive-loss-new.jpg
Biology of the ear http://www.nal.gov. au/images/conductive-loss-new.jpg Agenda Pre-test Lecture Group Gesture Types of hearing losses Audiograms Views Post-test Pretest!! See how much you know Answer
More informationHearing Evaluation: Diagnostic Approach
Hearing Evaluation: Diagnostic Approach Hearing Assessment Purpose - to quantify and qualify in terms of the degree of hearing loss, the type of hearing loss and configuration of the hearing loss - carried
More informationABR PTA ASSR Multi-ASSR OAE TEOAE DPOAE SOAE VEMP ECochG MLR P300
ABR PTA ASSR Multi-ASSR OAE TEOAE DPOAE SOAE VEMP ECochG MLR P300 Neuro-Audio one device for all audiological tests Auditory brainstem response (ABR)/Brainstem evoked response audiometry (BERA) (air and
More information2/16/2012. Pediatric Auditory Assessment: Using Science to Guide Clinical Practice
Pediatric Auditory Assessment: Using Science to Guide Clinical Practice Doug Sladen, Ph.D. Mayo Clinic Rochester, Minnesota sladen.douglas@mayo.edu Evidence Based Practice The conscientious, explicit,
More informationDeafness and hearing impairment
Auditory Physiology Deafness and hearing impairment About one in every 10 Americans has some degree of hearing loss. The great majority develop hearing loss as they age. Hearing impairment in very early
More informationChapter 13 Physics of the Ear and Hearing
Hearing 100 times greater dynamic range than vision Wide frequency range (20 ~ 20,000 Hz) Sense of hearing Mechanical system that stimulates the hair cells in the cochlea Sensors that produce action potentials
More informationBIO-LOGIC PRO NAVIGATOR TRUSTED TECHNOLOGY. RELIABLE RESULTS.
BIO-LOGIC NAVIGATOR PRO TRUSTED TECHNOLOGY. RELIABLE RESULTS. www.natus.com THE BIO-LOGIC NAVIGATOR PRO SYSTEM DELIVERS A RELIABLE AND ACCURATE DIAGNOSTIC EVOKED POTENTIAL TESTING PLATFORM WITH AN ADAPTABLE
More informationPERIPHERAL AND CENTRAL AUDITORY ASSESSMENT
PERIPHERAL AND CENTRAL AUDITORY ASSESSMENT Ravi Pachigolla, MD Faculty Advisor: Jeffery T. Vrabec, MD The University of Texas Medical Branch At Galveston Department of Otolaryngology Grand Rounds Presentation
More informationSPECIAL SENSES: THE AUDITORY SYSTEM
SPECIAL SENSES: THE AUDITORY SYSTEM REVISION OF PHYSICS: WAVES A wave is an oscillation of power, sound waves have two main characteristics: amplitude, which is the maximum displacement or the power of
More informationWe are IntechOpen, the first native scientific publisher of Open Access books. International authors and editors. Our authors are among the TOP 1%
We are IntechOpen, the first native scientific publisher of Open Access books 3,350 108,000 1.7 M Open access books available International authors and editors Downloads Our authors are among the 151 Countries
More informationThe complexity of ANSD starts at the time of assessment
The complexity of ANSD starts at the time of assessment ANHS Conference May 2017 Florencia Montes, Monica Wilkinson, Carolyn Cottier Outline ANSD review of definition OAEs vs CM Our data: hearing results,
More informationInternational Journal of Biological & Medical Research
Int J Biol Med Res. 2013; 4(3) :3453-3457 Int J Biol Med Res Volume 3, Issue 1, Jan 2012 www.biomedscidirect.com BioMedSciDirect Publications Contents lists available at BioMedSciDirect Publications International
More informationPSY 215 Lecture 10 Topic: Hearing Chapter 7, pages
PSY 215 Lecture 10 Topic: Hearing Chapter 7, pages 189-197 Corrections: NTC 09-1, page 3, the Superior Colliculus is in the midbrain (Mesencephalon). Announcements: Movie next Monday: Case of the frozen
More informationTechnical Report: Distortion Product Otoacoustic Emissions That Are Not Outer Hair Cell Emissions DOI: /jaaa
J Am Acad Audiol 20:306 310 (2009) Technical Report: Distortion Product Otoacoustic Emissions That Are Not Outer Hair Cell Emissions DOI: 10.3766/jaaa.20.5.3 Shlomo Silman*{{ Michele B. Emmer*{ Carol A.
More informationCASE REPORT. AUDITORY NEUROPATHY WITH BILATERAL BAT EARS A RARE CASE REPORT A. Sivakumar 1, V. Narendrakumar 2
AUDITORY NEUROPATHY WITH BILATERAL BAT EARS A RARE CASE REPORT A. Sivakumar 1, V. Narendrakumar 2 HOW TO CITE THIS ARTICLE: A Sivakumar, V Narendrakumar. Auditory neuropathy with bilateral bat ears a rare
More informationGlossary For Parents. Atresia: closure of the ear canal or absence of an ear opening.
Glossary For Parents This is not a complete or comprehensive glossary of audiologic and medical terms. It does include many technical and often unfamiliar terms that parents may hear used in connection
More informationEvoked Potenital Reading Session: BAEPs
Evoked Potenital Reading Session: BAEPs Alan D. Legatt, M.D., Ph.D. Disclosures relevant to this presentation: None AEP Components on a Logarithmic Time Scale Source: Picton TW, Hillyard SA. Human auditory
More informationProtocol for Fast, Efficient Audiogram Prediction using Electrophysiology. Sponsored By
Protocol for Fast, Efficient Audiogram Prediction using Electrophysiology Sponsored By What Improvements Are Needed In Obtaining Audiogram Predictions in Infants?? NNNNNNNNNNNNN --TESTING MUST BE FASTER
More informationA Brief Introduction to Stacked ABR and Cochlear Hydrops Analysis Masking Procedure (CHAMP)
A Brief Introduction to Stacked ABR and Cochlear Hydrops Analysis Masking Procedure (CHAMP) Prepared for Bio-logic Systems Corp. by Manuel Don, Ph.D. / Betty Kwong, M.S. Electrophysiology Department House
More informationHEARING AND COCHLEAR IMPLANTS
HEARING AND COCHLEAR IMPLANTS FRANCIS CREIGHTON, MD NEUROTOLOGY & SKULL BASE SURGERY FELLOW JOHNS HOPKINS SCHOOL OF MEDICINE NOV 9 TH, 2017 THANKS TO: CHARLIE DELLA SANTINA, HEIDI NAKAJIMA AND DOUG MATTOX
More informationReceptors / physiology
Hearing: physiology Receptors / physiology Energy transduction First goal of a sensory/perceptual system? Transduce environmental energy into neural energy (or energy that can be interpreted by perceptual
More informationEar Exam and Hearing Tests
Ear Exam and Hearing Tests Test Overview A thorough evaluation of a person's hearing requires an ear exam and hearing tests. In children, normal hearing is important for language to develop correctly.
More informationCOM3502/4502/6502 SPEECH PROCESSING
COM3502/4502/6502 SPEECH PROCESSING Lecture 4 Hearing COM3502/4502/6502 Speech Processing: Lecture 4, slide 1 The Speech Chain SPEAKER Ear LISTENER Feedback Link Vocal Muscles Ear Sound Waves Taken from:
More informationMECHANISM OF HEARING
MECHANISM OF HEARING Sound: Sound is a vibration that propagates as an audible wave of pressure, through a transmission medium such as gas, liquid or solid. Sound is produced from alternate compression
More informationInfants, auditory steady-state responses (ASSRs), and clinical practice
Infants, auditory steady-state responses (ASSRs), and clinical practice Susan Small, PhD University of British Columba Hamber Professor of Clinical Audiology Phonak 2016, Atlanta, GA October 2-5, 2016
More informationOn the physiological location of otoacoustic emissions
On the physiological location of otoacoustic emissions Brännström, Jonas; Lantz, Johannes Published: 2001-01-01 Link to publication Citation for published version (APA): Brännström, J., & Lantz, J. (2001).
More informationReflex Measurements - Quick Guide
eflex Measurements Page 1 of 9 eflex Measurements - Quick Guide Description The acoustic reflex is the contraction of the stapedius muscle elicited by the presentation of an acoustically loud sound. When
More informationAUDL GS08 and GAV1: 2013 Final exam page 1/13. You must complete all sections. Label all graphs. Show your work!
AUDL GS08 and GAV1: 2013 Final exam page 1/13 You must complete all sections. Label all graphs. Show your work! Section A: Short questions concerning Signals & Systems A1. Give the sound pressure levels
More informationCochlear and Brainstem Audiologic Findings in Normal Hearing Tinnitus Subjects in Comparison with Non-Tinnitus Control Group
ORIGINAL ARTICLE Cochlear and Brainstem Audiologic Findings in Normal Hearing Tinnitus Subjects in Comparison with Non-Tinnitus Control Group Shadman Nemati 1, Ali Faghih Habibi 1, Rasool Panahi 2, and
More informationWheeler, K.S. M.Cl.Sc. (Aud) Candidate School of Communication Sciences and Disorders, U.W.O
Copyright 2007 by Wheeler, K.S. Critical Review: Is there evidence that auditory steady-state response measures provide a more accurate electrophysiological estimate of behavioural thresholds in infants
More informationYour Baby s Visit to the Audiology Clinic (Hearing Clinic)
Your Baby s Visit to the Audiology Clinic (Hearing Clinic) Your baby has been referred to the Audiology Clinic (Hearing Clinic) for further hearing tests. This is a clinic specialising in hearing and
More informationPrintable version - Hearing - OpenLearn - The Open University
Skip to content Accessibility Sign in Contact Search the OU The Open University Study at the OU Research at the OU OU Community About the OU Hearing Printable page generated Saturday, 12 November 2011,
More informationAcoustics Research Institute
Austrian Academy of Sciences Acoustics Research Institute Modeling Modelingof ofauditory AuditoryPerception Perception Bernhard BernhardLaback Labackand andpiotr PiotrMajdak Majdak http://www.kfs.oeaw.ac.at
More informationHearing Sound. The Human Auditory System. The Outer Ear. Music 170: The Ear
Hearing Sound Music 170: The Ear Tamara Smyth, trsmyth@ucsd.edu Department of Music, University of California, San Diego (UCSD) November 17, 2016 Sound interpretation in the auditory system is done by
More informationMusic 170: The Ear. Tamara Smyth, Department of Music, University of California, San Diego (UCSD) November 17, 2016
Music 170: The Ear Tamara Smyth, trsmyth@ucsd.edu Department of Music, University of California, San Diego (UCSD) November 17, 2016 1 Hearing Sound Sound interpretation in the auditory system is done by
More informationOutline ANATOMY OF EAR. All about Cochlear implants/why does this child not have a Cochlear Implant?
All about Cochlear implants/why does this child not have a Cochlear Implant? Dr.S.Rangan Consultant Audiovestibular Physician (Paediatrics) St Catherine s Health Centre WUTH/BAPA Outline How does the ear
More informationApplication of a Stimulus Spectral Calibration Routine to Click Evoked Otoacoustic Emissions
J Am Acad Audiol 8 : 333-341 (1997) Application of a Stimulus Spectral Calibration Routine to Click Evoked Otoacoustic Emissions Mark E. Chertoff* S. N. Guruprasad* Abstract This study examined the influence
More informationPhysiological basis of sound design. Prof. Dr. med. Eckhard Hoffmann Dipl.-Ing. (FH) Steffen Kreikemeier Aalen University of Applied Sciences
Physiological basis of sound design Prof. Dr. med. Eckhard Hoffmann Dipl.-Ing. (FH) Steffen Kreikemeier Aalen University of Applied Sciences Index of contents Physiological basis of the inner ear Organ
More informationAudiometric Techniques Program in Audiology and Communication Sciences Pediatric Audiology Specialization
Audiometric Techniques Program in Audiology and Communication Sciences Pediatric Audiology Specialization The contents of this presentation were developed under a grant from the US Department of Education,
More informationAccuScreen ABR Screener
AccuScreen ABR Screener Test Methods Doc no. 7-50-1015-EN/02 0459 Copyright notice No part of this Manual or program may be reproduced, stored in a retrieval system, or transmitted, in any form or by any
More informationAcoustic Immittance (ME measures) Tympanometery
Acoustic Immittance (ME measures) Tympanometery Introduction ME role ME is aiming to transfer sound energy from the air (ear canal) to cochlear fluids (IE). The anatomical structures of the ME increase
More informationEvoked Potenital Reading Session: BAEPs
Evoked Potenital Reading Session: BAEPs Alan D. Legatt, M.D., Ph.D. Disclosures relevant to this presentation: None AEP Components on a Logarithmic Time Scale Source: Picton TW, Hillyard SA. Human auditory
More informationBCS 221: Auditory Perception BCS 521 & PSY 221
BCS 221: Auditory Perception BCS 521 & PSY 221 Time: MW 10:25 11:40 AM Recitation: F 10:25 11:25 AM Room: Hutchinson 473 Lecturer: Dr. Kevin Davis Office: 303E Meliora Hall Office hours: M 1 3 PM kevin_davis@urmc.rochester.edu
More informationTHE COCHLEA AND AUDITORY PATHWAY
Dental Neuroanatomy Suzanne S. Stensaas, PhD February 23, 2012 Reading: Waxman, Chapter 16, Review pictures in a Histology book Computer Resources: http://www.cochlea.org/ - Promenade around the Cochlea
More informationSpatial hearing and sound localization mechanisms in the brain. Henri Pöntynen February 9, 2016
Spatial hearing and sound localization mechanisms in the brain Henri Pöntynen February 9, 2016 Outline Auditory periphery: from acoustics to neural signals - Basilar membrane - Organ of Corti Spatial
More informationUNDERSTANDING HEARING LOSS
Helping Babies and Toddlers get a Strong Start UNDERSTANDING HEARING LOSS You have recently been told that your child has a hearing loss. You may feel emotional and overwhelmed as you begin to learn more
More informationUNDERSTANDING HEARING LOSS
Helping Babies and Toddlers get a Strong Start UNDERSTANDING HEARING LOSS You have recently been told that your child has a hearing loss. You may feel emotional and overwhelmed as you begin to learn more
More informationChapter 3: Anatomy and physiology of the sensory auditory mechanism
Chapter 3: Anatomy and physiology of the sensory auditory mechanism Objectives (1) Anatomy of the inner ear Functions of the cochlear and vestibular systems Three compartments within the cochlea and membranes
More informationGSI AUDIOscreener OAE AND ABR HEARING SCREENING
GSI AUDIOscreener OAE AND ABR HEARING SCREENING + Setting The Clinical Standard GSI AUDIOscreener OAE AND ABR HEARING SCREENING + The Problem Hearing loss is the most common birth defect in the United
More informationNeurosurgical Review. CE-Chirp ABR in cerebellopontine angle surgery neuromonitoring: technical assessment in four cases.
CE-Chirp ABR in cerebellopontine angle surgery neuromonitoring: technical assessment in four cases. Journal: Neurosurgical Review Manuscript ID: Draft Manuscript Type: Case Report Date Submitted by the
More informationENT 318 Artificial Organs Physiology of Ear
ENT 318 Artificial Organs Physiology of Ear Lecturer: Ahmad Nasrul Norali The Ear The Ear Components of hearing mechanism - Outer Ear - Middle Ear - Inner Ear - Central Auditory Nervous System Major Divisions
More informationAudiogram. Assistant Professor King Saud University Otolaryngology Consultant Otologist, Neurotologist & Skull Base Surgeon King Abdulaziz Hospital
Audiogram Dr. Abdulrahman Hagr MBBS FRCS(c) Assistant Professor King Saud University Otolaryngology Consultant Otologist, Neurotologist & Skull Base Surgeon King Abdulaziz Hospital Purpose of Audiogram
More informationC ritical Review: Do we see auditory system acclimatization with hearing instrument use, using electrophysiological measures?
C ritical Review: Do we see auditory system acclimatization with hearing instrument use, using electrophysiological measures? Alasdair Cumming M.Cl.Sc (AUD) Candidate University of Western Ontario: School
More information