Robert W Keith

Robert W Keith
University of Cincinnati | UC · Departments of Otolaryngology-Head and Neck Surgery in the UC College of Medicine and the Department of Communication Sciences and Disorders in the College of Health Sciences

Ph.D.

About

125
Publications
14,205
Reads
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2,329
Citations
Introduction
My interests are auditory processing and related disorders in children and adults. Recently I developed with AuD student help the University of Cincinnati Auditory Processing Inventory (UCAPI), a questionnaire that can be used to determine who may benefit from a diagnostic evaluation. The questionnaire is well documented, standardized, and useful for adolescents and adults suspected of having a listening, auditory processing, or related disorders. Contact me for more information.
Additional affiliations
January 2003 - present
University of Cincinnati
Position
  • Professor and Director of Audiology
June 1967 - present
University of Cincinnati Medical Center
Position
  • Professor Emeritus

Publications

Publications (125)
Article
Full-text available
Background Cincinnati Auditory Processing Inventory is used to examine difficulties with listening abilities among adolescents and adult groups and to investigate necessary skills for accurate processing of auditory information. This study aimed to develop the Persian version of the University of Cincinnati Auditory Processing Inventory (P-UCAPI) q...
Preprint
Full-text available
A questionnaire was developed that was designed for use with adolescents and adults seeking initial testing for evaluation of problems with listening. It can also be used following diagnosis of an auditory processing disorder to determine changes in the subject's status or to document effectiveness of remediation. Following a model described by Zop...
Research
Full-text available
Development, standardization and validation of a listening questionnaire called the University of Cincinnati Auditory Processing Inventory
Research
Full-text available
This questionnaire can be used by appropriate professionals to determine if a client has a possible auditory processing disorder and is a candidate for diagnostic testing.
Article
Full-text available
Development and Standardization of the University of Cincinnati Auditory Processing Inventory (UCAPI)
Article
Full-text available
A review of available literature finds that validated questionnaires used with persons having problems of listening who were seeking assessment of auditory processing skills were all developed for use with children and are not applicable for adolescents and adults. We developed a questionnaire designed for use with adolescents and adults seeking in...
Article
Full-text available
Objective: A literature review found that questionnaires for persons with problems of listening seeking assessment of auditory processing skills are not applicable for adolescents and adults. We developed a questionnaire designed for adolescents and adults seeking evaluation of problems with listening or following diagnosis to determine the subjec...
Article
Background: To add to the limited body of literature on ocular vestibular evoked myogenic potential (oVEMP) responses in children and to assess a different montage for oVEMP recording. Purpose: To evaluate the characteristics of the oVEMP response in children and compare the results with that of a group of healthy adults. Research design: Pros...
Poster
Full-text available
This poster is a summary of data analysis conducted by AuD student Hillary Jackson who examined SCAN-A and SCAN-C test outcomes on a population of subjects diagnosed with Auditory Processing Disorders�.
Article
Background: Although most cochlear implant (CI) users achieve improvements in speech perception, there is still a wide variability in speech perception outcomes. There is a growing body of literature that supports the relationship between individual differences in temporal processing and speech perception performance in CI users. Previous psychoph...
Article
Full-text available
Objective In this study, different kinds of memory were evaluated using Rey Auditory Verbal Learning (RAVLT) test and were compared between two groups of typical and gifted students using Digit Span test. Finally, we determined if working memory interfered with scores in different Rey stages or not. Material & Methods This study was conducted in T...
Poster
Full-text available
This poster is the first formal presentation of many to come that presents early information on the development and standardization of the University of Cincinnati Auditory Processing Inventory (UCAPI). This questionnaire can be used to identify individuals with problems of listening that may be related to auditory processing, language, and learnin...
Article
Recent work has investigated the use of electric stimuli to evoke auditory steady state response (ASSR) in cochlear implant (CI) users. While more control can be exerted using electric stimuli, acoustic stimuli present natural listening environment for CI users. However, ASSR using acoustic stimuli in the presence of a CI could lead to artifacts. F...
Article
Full-text available
IntroductionThe purpose of the present study was to identify biomarkers of listening difficulties by investigating white matter microstructure in children suspected of auditory processing disorder (APD) using diffusion tensor imaging (DTI). Behavioral studies have suggested that impaired cognitive and/or attention abilities rather than a pure senso...
Article
Full-text available
The objective was to determine if one of the neural temporal features, neural adaptation, can account for the across-subject variability in behavioral measures of temporal processing and speech perception performance in cochlear implant (CI) recipients. Neural adaptation is the phenomenon in which neural responses are the strongest at the beginning...
Article
Full-text available
Dichotic listening (DL) tests are among the most frequently included in batteries for the diagnosis of auditory processing disorders (APD) in children. A finding of atypical left ear advantage (LEA) for speech-related stimuli is often taken by clinical audiologists as an indicator for APD. However, the precise etiology of ear advantage in DL tests...
Article
Objectives: The children with difficulty in receiving sounds presented at rapid rates in speech sounds and language learning period, may have delay in speech sounds and language development due to hearing speech sounds not clearly. Auditory temporal processing (ATP) is the ability to perceive auditory signals of brief duration accurately when pres...
Article
Cantonese dichotic digits recognition was evaluated in free-recall, directed-attention right, and directed-attention left response conditions. All participants were right-handed and included a group of young adults with normal hearing and a group of older adults with minimal sensorineural hearing loss. In all conditions, performance by the young ad...
Article
Objectives: In auditory neuropathy (AN) children with hearing aids (HAs) or cochlear implant (CI), the speech perception improvement may not be in a significant degree. These children may perform speech perception after a few repeats. This condition may show that these children had difficulties in receiving and processing speech sounds. If the chi...
Article
To examine the effects of solvent exposure on hearing function, through an audiological test battery, in a population not occupationally exposed to high levels of noise. One hundred ten workers from a coating factory were studied. Jobs at the factory were divided into three different levels of solvent exposure. Hearing status was assessed with a te...
Article
Full-text available
The Listening in Spatialized Noise-Sentences test (LiSN-S) was originally developed in Australia to assess auditory stream segregation skills in children with suspected central auditory processing disorder (CAPD). The software produces a three-dimensional auditory environment under headphones. A simple repetition-response protocol is utilized to de...
Article
Full-text available
Auditory processing disorders (APD) are defined as difficulties in hearing and understanding speech in the presence of normal peripheral hearing. Children with APD appear to be uncertain about what they hear, and have difficulties listening in background noise, following oral instructions, and understanding rapid or degraded speech. Suspicious beha...
Article
Full-text available
Single and double dichotic digit tests in Malay language were developed and standardized as an initial attempt to incorporate tests of auditory processing within the scope of audiology practice in Malaysia. Normative data under free recall, directed right-ear first, and directed left-ear first listening conditions were determined using 120 Malay ch...
Article
A case report is presented. To report a previously undescribed complication related to use of a neurogenic motor-evoked potential monitoring electrode and electrosurgery during spinal surgery. Although electrosurgery is one of the most commonly used technologies in the operating room, its electrophysical properties, including the potential for comp...
Article
An abstract is unavailable. This article is available as HTML full text and PDF.
Article
Full-text available
The Time Compressed Sentence Test (TCST) was developed to identify and quantify disorders of auditory processing in children. The test consists of sentences that were time compressed at 0, 40, and 60%. Standardization data was obtained from 13 beta site examiners in 7 states. One-hundred sixty three normally hearing and typically developing childre...
Article
This paper reports on the development and standardization of SCAN-C: Test for Auditory Processing Disorders in Children-Revised. The revisions include new test instructions that have been reworded to make them easier for young children, aural stimuli presented on a compact disc, a revision of the Competing Words subtest, and the addition of a Compe...
Article
A review of 60 surgical cases for correction of scoliosis, during which neuromotor evoked potentials and somatosensory evoked potentials were monitored. To determine the validity and reliability of intraoperative neuromotor evoked potential monitoring in cases of scoliosis, where damage to the motor tracts of the spinal cord can occur. Recently, th...
Article
Study Design. A review of 60 surgical cases for correction of scoliosis, during which neuromotor evoked potentials and somatosensory evoked potentials were monitored. Objectives. To determine the validity and reliability of intraoperative neuromotor evoked potential monitoring in cases of scoliosis, where damage to the motor tracts of the spinal co...
Article
Speech-language pathologists are often faced with the need to assess and treat the suspected auditory processing problems of children with language and learning difficulties. This article discusses central auditory processing disorders (CAPDs). Included are a discussion of background information, a current definition of CAPDs, a general discussion...
Article
The purpose of this article is to report the audiologic and central auditory processing abilities of a 34-year-old male with a right temporal lobe tumor and a history of bilateral tumors of the temporal lobes. The patient was evaluated presurgical re-exploration and again at 2.5 months and 4 months postoperatively. Test results demonstrated little...
Article
Spasmodic dysphonia is a focal laryngeal dystonia characterized by inappropriate contractions of the intrinsic laryngeal musculature. The prevalence of associated neurological findings has led to detailed investigation of the central nervous system. Previous research revealed latency abnormalities in patients' auditory brainstem responses. The pres...
Article
Persons with vestibular disorders often experience difficulty engaging in activities of daily living. These difficulties extend into both home and occupational pursuits and affect personal interactions and social activities. When medication or surgery is not effective or indicated, a nonmedical vestibular rehabilitation program may help the patient...
Article
The use of continuous performance tasks has been examined as a potential measure for clinical/laboratory identification of Attention-deficit/hyperactivity disorder. The present study compared the performance of 30 children, 26 boys and 4 girls ranging in age from 9-0 to 12-11, with central auditory processing disorders (CAPD) who did not meet crite...
Article
Electrophysiological studies (for example, electroneuronography, nerve action potentials, absolute amplitudes of the muscle compound action potentials, and stimulation thresholds) do not accurately predict facial nerve function after the excision of acoustic neuromas. To eliminate individual nerve variability, the authors measured the ratio of the...
Article
This paper reports on the development and standardization of SCAN-A: Test of Auditory Processing Disorders in Adolescents and Adults. The standardization version of SCAN-A included six subtests; two filtered words (FW) subtests, two auditory figure-ground (AFG) subtests, a competing words (CW) subtest, and a competing sentences (CS) subtest. Studie...
Article
The role of surgery in the treatment of idiopathic facial paralysis (Bell's Palsy) has been the subject of much controversy. Some have advocated aggressive surgical therapy to prevent nerve injury based on evoked electromyography (EEMG) results. The present study analyzes the outcome of 23 patients who presented with Bell's palsy and were evaluated...
Article
Intracranial section of the glossopharyngeal and upper vagal rootlets for the treatment of vagoglossopharyngeal neuralgia may cause dysphagia or vocal cord paralysis from injury to the motor vagal rootlets in 10% to 20% of cases. To minimize this complication, we recently applied a technique of intraoperative monitoring of the vagus nerve (previous...
Article
INTRACRANIAL SECTION OF the glossopharyngeal and upper vagal rootlets for the treatment of vagoglossopharyngeal neuralgia may cause dysphagia or vocal cord paralysis from injury to the motor vagal rootlets in 10% to 20% of cases. To minimize this complication, we recently applied a technique of intraoperative monitoring of the vagus nerve (previous...
Article
Meningiomas arising from the petroclival dura have presented a challenge to both otolaryngologists and neurosurgeons. Access by means of subtemporal, suboccipital, translabyrinthine, or transcochlear routes have inherent limitations both surgically as well as from resultant morbidity. Since 1988, the authors have used a transpetrosal transtentorial...
Article
Intraoperative facial nerve monitoring has been accepted as a valuable adjunctive modality to be employed in a variety of neurotologic and skull base surgical procedures. However, the role that electrical or mechanical stimulation assessment plays in chronic ear surgery is less well defined, especially in a residency training program. In this study...
Article
Full-text available
This study explored the effects of occupational exposure to solvents and noise on hearing. Interviews and hearing tests were conducted for printing and paint manufacturing workers. The experimental groups included unexposed (N = 50) workers and workers exposed to noise (N = 50), noise and toluene (N = 51), or an organic solvent mixture (N = 39). Th...
Article
Increased demand for electrophysiological intraoperative monitoring beyond the facial and auditory nerves has expanded the role of the audiologist in the operating room. Although the principles of intraoperative monitoring are somewhat universally applicable across modalities, extensive training is required for each monitored structure. This articl...
Article
A patient with "far-advanced" otosclerosis with a profound bilateral hearing loss was evaluated for cochlear reserve using transtympanic electrocochleography (ECoG) and promontory stimulation. Results indicated that both ECoG and promontory responses were present, indicating that cochlear function was present bilaterally. A stapedectomy resulted in...
Article
This analysis examined the relationship between lead exposure as registered in whole blood (PbB) and the central auditory processing abilities and cognitive developmental status of the Cincinnati cohort (N = 259) at age 5 years. Although the effects were small, higher prenatal, neonatal, and postnatal PbB levels were associated with poorer central...
Article
Stimulant medications are widely used as part of the treatment for children with attention deficit-hyperactivity disorder (ADHD). The current study investigated the effects of methylphenidate on auditory vigilance, auditory processing abilities, and receptive language abilities of children with ADHD. Twenty subjects (17 males and 3 females) ranged...
Article
The use of either cold or warm caloric stimulation alone as a screening tool for unilateral weakness has been suggested as a means of both shortening testing time and reducing patient discomfort. The validity of the monothermal caloric test must be well established before it can be routinely used in clinical situations. The purpose of this investig...
Article
Central auditory disorders in children and adults have become more widely recognized in patients seen by otolaryngologists and audiologists. This article briefly defines those clinical entities, discusses the historic background of testing, and describes current and future test approaches to assessment of central auditory disorders.
Article
Full-text available
Heightened physician awareness of the sociologic and psychologic trauma related to deafness coupled with an increased emphasis on early diagnosis has prompted the employment of sophisticated diagnostic studies in an attempt at identification of an acoustic neuroma as a cause of hearing loss. Because profound bilateral hearing impairment is a catast...
Article
The purpose of this paper is to determine the relationship between the SSW and a battery of auditory-language tests in a group of children suspected of auditory processing problems. Thirty-one children between the ages of 6.2 and 10.4 were referred by their classroom teachers. All children were administered a pure tone and an acoustic immittance ba...
Article
Full-text available
The postural sway responses of 63 children with a mean age of 5.74 years were quantified with a Force Platform technique. The average maximum (max) blood lead (PbB) of these children during the first 5 years of life was 20.7 micrograms/dL (range 9.2 to 32.5). The backward stepwise regression analysis for sway area response during the eyes-closed, n...
Article
A review of our experience with evoked potential monitoring of over 100 spinal procedures is summarized here. Typical results of somatosensory cortical evoked potential (SCEP) testing found that latency of responses increased slightly and amplitude decreased substantially from preanesthesia to predistraction with no further changes. SCEP results ar...
Article
This study was conducted to compare results of SCAN: A Screening Test for Auditory Processing Disorders with other central auditory and language tests. The SCAN, Staggered Spondee Word test (SSW), Competing Sentence test, Peabody Picture Vocabulary Test (PPVT), and the Clinical Evaluation of Language Fundamentals-Revised (CELF-R) were administered...
Article
Although the protean manifestations of neurofibromatosis have been studied for many years, much is yet to be learned about this disease in young children. Specifically, little is known about the prevalence and significance of early neurotologic abnormalities in this population. Our review of the recent literature, however, failed to identify any pu...
Article
Onset latency, rise time, and amplitude measures of the acoustic reflex and auditory brain stem responses (ABRs) to clicks were elicited from normal subjects and subjects with multiple sclerosis (MS). The results indicated that MS subjects exhibited response abnormalities including prolonged rise times of the acoustic reflex and prolonged absolute...
Article
The purpose of this study was to develop a new multilayer clinical assessment technique to evaluate auditory-language processing abilities in children. Following a 90-min in-service workshop on auditory-language processing problems, 46 nonhandicapped first-, second-, and third-grade students were referred by their classroom teachers for an evaluati...
Article
This study was undertaken to determine the effect of linguistic background on scores obtained by native and non-native subjects on two dichotic speech tests in American English, the staggered spondaic word (SSW) and the dichotic consonant-vowel (CV) tests. Thirty subjects whose native languages were either Hindi or Arabic were tested. Test findings...
Article
Clinical usefulness of the neodymium/yttrium aluminum garnet (Nd:YAG) laser in surgery of the middle ear is unproven. An animal study was designed to examine the influence of Nd:YAG laser irradiation on cochlear potentials following vaporization of the stapes. Electrocochleagraphic changes were observed in two of the five animals studied, and cauti...
Article
The identification and assessment of children with possible auditory disorders present the speech language pathologist with a set of problems that are quite familiar. The problems revolve around a set of decisions regarding what testing is necessary, what is "merely" interesting, and what testing may lead to new information. Certain testing is requ...
Article
The purpose of this study was to examine the response of adult subjects to directed listening tasks, using the dichotic consonant-vowel (CV) identification test. Twenty-five subjects, 20 to 36 years of age, were tested. Dichotic CV testing was administered utilizing the directed listening paradigm and free recall instructions. Results indicated tha...
Article
The relationship between two dichotic listening tasks was studied. The two dichotic tests used were the Staggered Spondaic Word (SSW) test and the directed Dichotic Consonant-Vowel (CV) test. These measures were administered to 104 children between the ages of 6.0 and 8.0 yrs. The subjects were divided into two groups according to their Token test...
Article
The Staggered Spondee Word (SSW) test is a dichotic listening test that has been frequently used in the evaluation of auditory perceptual abilities in children with language and learning problems. Interpretation of this test is based on scores obtained under noncompeting and competing portions of the test stimuli, and on response biases that includ...