Cochlear Hearing Loss - 2nd Edition

Informationen zum Autor Brian C. J. Moore is the author of Cochlear Hearing Loss: Physiological, Psychological and Technical Issues, 2nd Edition, published by Wiley. Klappentext Hearing loss caused by damage to the cochlea is amongst the most common forms of hearing loss in the developed world and affects approximately 7% of the population. Over the last 20 years there has been a revolution in our understanding of the mechanisms of sound analysis in the normal cochlea. The mechanisms associated with cochlear hearing loss are also better understood as a result. Most advances in understanding, however, have been related to physiological mechanisms.Cochlear Hearing Loss, 2e focuses on the perceptual changes in hearing associated with cochlear hearing loss and relates those to the underlying physiological mechanisms. The book provides a theoretical framework for understanding and interpreting the perceptual changes in hearing experienced by sufferers so that readers will understand not just what happens, but also why it happens. A discussion of the limitations and benefits of hearing aids is also provided, along with an overview of digital hearing aids.Topics discussed within Cochlear Hearing Loss, 2e include:* the physiology of the peripheral auditory system;* absolute thresholds;* frequency selectivity and masking;* loudness, pitch and speech perception;* sound localisation and binaural processing;* signal processing in hearing aids, and methods of adjusting hearing aids to suit the individual.This revised and substantially updated 2nd edition contains essential reading for audiologists, hearing-aid dispensers, hearing-aid acousticians, researchers in hearing science, otologists, ENT specialists and students in related disciplines. Zusammenfassung Since the first edition was published in 1998, considerable advances have been made in the fields of pitch perception and speech perception. In addition, there have been major changes in the way that hearing aids work, and the features they offer. Inhaltsverzeichnis Preface. Chapter 1. Physiological Aspects of Cochlear Hearing Loss. I. INTRODUCTION. II.LINEAR AND NONLINEAR SYSTEMS. III. STRUCTURE AND FUNCTION OF THE OUTER AND MIDDLE EAR. IV. STRUCTURE AND FUNCTION OF THE NORMAL COCHLEA. 1. The cochlea, the basilar membrane and the organ of Corti. 2. Tuning on the basilar membrane. 3. The nonlinearity of input-output functions on the BM. 4. Two-tone suppression. 5. Combination tone generation. 6. Responses of the BM to complex sounds. 7. Otoacoustic emissions. V. NEURAL RESPONSES IN THE NORMAL AUDITORY NERVE. 1. Spontaneous firing rates and thresholds. 2. Tuning curves and iso-rate contours. 3. Rate-versus-level functions. 4. Two-tone suppression. 5. Phase locking. VI. TYPES OF HEARING LOSS. VII. PHYSIOLOGY OF THE DAMAGED COCHLEA.   1. BM responses. 2. Neural responses. 3. Structure-function correlation. 4. Otoacoustic emissions. 5. Phase locking. VIII. CONCLUSIONS. Chapter 2. Absolute Thresholds. I.  INTRODUCTION. II. MEASURES OF ABSOLUTE THRESHOLD. 1.  Minimum audible pressure (MAP). 2.  Minimum audible field (MAF). 3.  Comparison of MAP and MAF. 4. The audiogram. III. DESCRIPTIONS OF THE SEVERITY OF HEARING LOSS. IV.  CAUSES OF HEARING LOSS DUE TO COCHLEAR DAMAGE. V. PERCEPTUAL CONSEQUENCES OF ELEVATED ABSOLUTE THRESHOLDS. Chapter 3. Masking, Frequency Selectivity and BM Nonlinearity. I.  INTRODUCTION. II.  THE MEASUREMENT OF FREQUENCY SELECTIVITY USING MASKING. 1. Introduction. 2. The power spectrum model. 3. Estimating the shape of a filter. III.  ESTIMATING FREQUENCY SELECTIVITY FROM MASKING EXPERIME...

Table des matières

Contents.
 
Preface.
 
PHYSIOLOGICAL ASPECTS OF COCHLEAR HEARING LOSS.
 
Introduction.
 
Linear and Nonlinear Systems.
 
Structure and Function of the Outer and Middle Ear.
 
Structure and Function of the Normal Cochlea.
 
Neural Responses in the Normal Auditory Nerve.
 
Types of Hearing Loss.
 
Physiology of the Damaged Cochlea.
 
Conclusions.
 
ABSOLUTE THRESHOLDS.
 
Introduction.
 
Measures of Absolute Threshold.
 
Descriptions of the Severity of Hearing Loss.
 
Causes of Hearing Loss Due to Cochlear Damage.
 
Perceptual Consequences of Elevated Absolute Thresholds.
 
MASKING, FREQUENCY SELECTIVITY AND BM NONLINEARITY.
 
Introduction.
 
The Measurement of Frequency Selectivity Using Masking.
 
Estimating Frequency Selectivity From Masking Experiments.
 
Characteristics of the Auditory Filter in Normal Hearing.
 
Masking Patterns and Excitation Patterns.
 
Non-Simultaneous Masking.
 
The Audibility of Partials in Complex Tones.
 
Effects of Cochlear Damage on Frequency Selectivity in Simultaneous Masking.
 
The Use of Masking to Diagnose Dead Regions.
 
Effects of Cochlear Damage on Forward Masking and Suppression .
 
Effects of Cochlear Hearing Loss on BM Input-Output Functions.
 
Perceptual Consequences of Reduced Frequency Selectivity, Loss of Suppression and Steeper BM Input-Output Functions.
 
LOUDNESS PERCEPTION AND INTENSITY RESOLUTION.
 
Introduction.
 
Loudness Perception for Normally Hearing People.
 
Effects of Cochlear Hearing Loss on Loudness Perception.
 
A Model of Normal Loudness Perception.
 
A Model of Loudness Perception Applied to Cochlear Hearing Loss.
 
Effects of Bandwidth on Loudness .
 
Effects of Cochlear Hearing Loss on Intensity Resolution.
 
Perceptual Consequences of Altered Loudness Perception.
 
TEMPORAL RESOLUTION AND TEMPORAL INTEGRATION.
 
Introduction.
 
Modelling Within-Channel Temporal Resolution in Normal Hearing.
 
Temporal Resolution in Normal Hearing.
 
Temporal Resolution in People with Cochlear Damage.
 
Temporal Integration at Threshold.
 
Temporal Integration at Suprathreshold Levels.
 
Perceptual Consequences of Abnormal Temporal Processing in People with Cochlear Hearing Loss.
 
PITCH PERCEPTION AND FREQUENCY DISCRIMINATION.
 
Introduction.
 
Theories of Pitch Perception.
 
The Perception of the Pitch of Pure Tones by Normally Hearing People.
 
Frequency Discrimination of Pure Tones by People with Cochlear Hearing Loss.
 
The Perception of Pure-Tone Pitch for Frequencies Falling in a Dead Region.
 
Pitch Anomalies in the Perception of Pure Tones.
 
The Pitch Perception of Complex Tones by Normally Hearing People.
 
Theories of Pitch Perception for Complex Tones.
 
Pitch Perception of Complex Tones by People with Cochlear Hearing Loss.
 
Perceptual Consequences of Altered Frequency Discrimination and Pitch Perception.
 
SPATIAL HEARING AND ADVANTAGES OF BINAURAL HEARING.
 
Introduction.
 
The Localisation of Sinusoids.
 
The Localisation of Complex Sounds.
 
The Cone of Confusion, Head Movements, and Pinna Cues.
 
General Conclusions on Sound Localisation.
 
The Precedence Effect.
 
Binaural Masking Level Differences (MLDs).
 
Head Shadow Effects.
 
Release From Informational Masking.
 
Diotic Advantages.
 
Perceptual Consequences of

Détails du produit

• Auteurs: Moore, Brian Moore, Brian C. J. Moore, Moore Brian C. J.
• Edition: Blackwell Scientific Publishers Ltd
• Langues: Anglais
• Format d'édition: Livre Broché
• Sortie: 19.10.2007
• EAN: 9780470516331
• ISBN: 978-0-470-51633-1
• Dimensions: 153 mm x 230 mm x 20 mm
• Catégories: Sciences naturelles, médecine, informatique, technique > Médecine > Général; Audiology, Audiologie, Health & Social Care, Gesundheits- u. Sozialwesen