Handbook of (Central) Auditory Processing Disorder Volume 1: Auditory Neuroscience and Diagnosis
RATING: (4 of 5 ears)
EDITORS: Frank E. Musiek, PhD, and Gail D. Chermak, PhD
PUBLISHER: Plural Publishing Inc., San Diego
REVIEWER: Maureen Lynch-Rinaldi, AuD, FAAA, Director of Audiology, Benedictine Hospital, Kingston, NY
SYNOPSIS: The Handbook of (Central) Auditory Processing Disorder Vol. 1 provides in-depth information on the neurophysiology of the central auditory pathway. A detailed presentation of the anatomy and physiology of the auditory pathway sets the foundation for the explanation of tests, and how they attempt to test function.
The available tests and various test protocols used were reviewed, as is the differential diagnosis considerations for older listeners, ADHD, and auditory neuropathy. The book encourages the necessity for bridging the gap between auditory neuroscience and clinical processes by providing in-depth discussion on the science, as well as the clinical thinking needed to evaluate and critique clinical protocols to best serve the individuals being assessed.
REVIEW: Section one provides overall anatomy and physiology, as well as the psychoacoustic relationship within the context of Central Auditory Processing Disorders (CAPD).
Chapter one serves as an introduction emphasizing the importance of both research and clinical aspects of CAPD. Many examples of how clinical practices have come about by careful examination of understanding the underlying sciences. The chapter encourages the clinician’s investigation and “scientific” attitude to evaluate CAPD tests for their reliability and validity. Chapters two and three provide a significant amount of detail that is burdened with acronyms, which made incorporating and understanding the material somewhat cumbersome and difficult. Chapter four covers neurobiology and ties these processes to those familiar to us with regard to CAPD, such as binaural listening, temporal processing, etc.
Section two provides an explanation of available tests and screening tools, plus provides clearly defined parameters in which you would use each specific test. Additionally, it compares tests with consideration to “best practices” for identifying individuals with CAPD. By summarizing the tools, it lends support to practices that reduce redundancy and makes for a more direct test protocol. Beyond the test considerations, there was comprehensive explanation of the collection of tests available for Monaural Low Redundancy, Dichotic Listening, Temporal Processing and Patterning, and Binaural Interaction.
Chapter twelve concludes the diagnostic section, and covers Electrophysiological Auditory Measures. Clear, understandable explanations of immittance and acoustic reflex arc, as well as OAEs were provided. However, if the reader is not familiar with AER evaluations, the chapter requires review of material as prerequisite to thoroughly grasp the content.
Section three in the book deals with the area of differential diagnosis. The section strives to present understanding of additional factors that “muddy” the diagnosis of CAPD. The “expected” outcomes for behavioral and electrophysiological testing are reviewed, as well as the factors that can impact the findings. The Multidisciplinary Perspectives addressed in Section four add considerable thought to placing the results of assessment into functional diagnostic information from the speech language pathologist, psychologists, and medical perspective. Chapter seventeen involves the significance of ADHD and CAPD findings. Chapter eighteen focuses on the medical perspective with regard to anatomy (physical exam) radiographic studies, blood work, and ENT examination as well as patient history. Chapter nineteen wraps up the book with recommendations for additional research and studies. Clinician education, modification of test protocol, and further investigation of AEPs, as well as the role that electrophysiological tests play in accurate diagnosis and clinical recommendations, are also addressed.
CRITIQUE: The Handbook of (Central) Auditory Processing Disorder, Vol. 1: Auditory Neuroscience and Diagnosis is a comprehensive presentation of the latest information for referral, in order to accurately and appropriately choose and perform assessments to diagnose CAPD. The analysis of available test materials provides a wonderful reference for clinicians to make objective decisions regarding their test protocols.
This reference provides the foundation for understanding the disorder, and Volume II will likely provide comparable discussion, critique, and recommendations for the management and intervention of CAPD. This book encourages thoughtful consideration of current and future trends in the diagnosis of CAPD, and promises more research and advancement in the area of diagnosis and intervention.