Pathways Society

Sep. 07, 2016

Rationale for the Use of Sound Field Systems for Children with Central Auditory Nervous System Dysfunction: Part 1

Dr. Frank Musiek
Steve Bornstein, Ph.D., C.C.C./Audiology Associate Professor University of New Hampshire Department of Communication Sciences and Disorders   Abstract   Children with Central Auditory Nervous System (CANS) Dysfunction have been observed to potentially have several deficits, such as difficulty with temporal tasks, degraded speech, time-compressed speech, and auditory pattern recognition. However, perhaps the greatest overall deficit is the ability to perceive
Aug. 03, 2016

Loudness Recruitment: A Commentary

Dr. Frank Musiek
Frank E. Musiek, Ph.D. University of Arizona   Auditory loudness recruitment at one time was a popular phrase among audiologists. In fact, in some of the early books devoted to clinical audiology, chapters about measuring recruitment, were often a focus (see Katz, 1972). In modern-day audiology, however, recruitment is a seldom used word. I would venture a guess that most
Jul. 06, 2016

The Auditory Processing Questionnaire: Differential Screening for APD Overview

Dr. Frank Musiek
Brian O ‘Hara, M.D. Developmental Behavioral Pediatrician in Honolulu Hawaii   Background Listening skills are critically important for young students since a majority of classroom time is spent “learning by listening.”  Weak listening skills are not uncommon and relate to both audiological (hearing acuity, auditory processing) and non-audiological factors (attention control, cognitive –language abilities).  It is thus important to have
Jun. 01, 2016

Assays of the Caudal Efferent Auditory System: Part II

Dr. Frank Musiek
Spencer B. Smith Au.D./Ph.D. student at the University of Arizona   *Please note: This article is Part II of a two-part series. Please refer to last month’s featured article to review Part I.   Introduction: Part I of this series briefly reviewed the anatomy and physiology of the mammalian caudal efferent auditory system and presented some animal research suggesting its putative
May. 04, 2016

Assays of the Caudal Efferent Auditory System: Part I

Dr. Frank Musiek
Spencer B. Smith Au.D./Ph.D. student at the University of Arizona   *Please note: This article is Part I of a two-part series. Part II will be published as next month’s featured piece, so please be on the look-out!   Introduction: Much of what is understood about the neurophysiology of auditory processing has been derived from studying and modeling the afferent auditory
Apr. 06, 2016

Sound Localization in Split-brain Subjects

Dr. Frank Musiek
Renata Filippini, PhD. Post-doctoral researcher at the University of Arizona and University of Sao Paulo   The construction of an accurate spatial map is key for localization of sound sources not only for communication, but also for survival. Being able to figure out the characteristics of the environment allow us to interact with it in a safe and productive manner: as
Mar. 03, 2016

Neuromorphological Abnormalities and Central Auditory Processing Disorders: An Overview

Dr. Frank Musiek
by Chloe E Robbins, The University of Arizona The human central auditory nervous system (CANS) is responsible for processing and maintaining the integrity of sound stimuli, both simple and complex, from the peripheral auditory system for interpretation at the cortical level. When pathologies arise in this system, abilities such as understanding speech, localization, lateralization, and discrimination of signals can become
Feb. 03, 2016

Commentary on “Effects of Low Pass Filtering on Ear Asymmetry in Dichotic Listening and Some Uncontrolled Error Sources” (Spreen and Boucher, 1970)

Dr. Frank Musiek
[gview file=””] Comment: Though some aspects of this article we may not agree with— there is an interesting finding that may need reiterated in the current research world. Progressive filtering of the high frequency energy of dichotically presented words appears to compromise the right ear advantage (REA). The REA has been well recognized for many years. This filtering obviously would
Jan. 06, 2016

Cochlear Dynorphins, Stress and Tinnitus

Dr. Frank Musiek
Tony L. Sahley, School of Health Sciences, Cleveland State University Subjective tinnitus is a clinical disorder, defined traditionally as a perception of sound (a tone, a hum or a hiss) that is experienced in the absence of an externally evoking auditory stimulus. For this reason, subjective tinnitus is often referred to as a phantom auditory perception. Approximately 25.3% of the general
Dec. 02, 2015

Status of Central Auditory Processing Disorders in India

Dr. Frank Musiek
N. Shivashankar, National Institute of Mental Health and Neurosciences  India poses a unique challenge for the audiologists and speech-language pathologists dealing with central auditory processing disorders (CAPD). These challenges are multifaceted because India is a multi-lingual country and people hail from various socio economic backgrounds. This makes it hard to develop uniform CAPD tests in different languages. Further, CAPD testing, unlike