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Articles 121 - 144 of 144
Full-Text Articles in Communication Sciences and Disorders
A Review Of Animal Studies For The Efficacy Of D-Methionine In Reducing Threshold Shifts And Affecting Biochemical Changes After Exposure To Noise, Alexandra Petraru
A Review Of Animal Studies For The Efficacy Of D-Methionine In Reducing Threshold Shifts And Affecting Biochemical Changes After Exposure To Noise, Alexandra Petraru
Dissertations, Theses, and Capstone Projects
Noise induced hearing loss (NIHL) is a major public health concern in the United States and worldwide. Certain individuals such as factory workers and military personnel are at greatest risk for irreversible sensorineural hearing loss due to the limitations of hearing protection measures and devices. D-Methionine (d-Met) is an antioxidant otoprotective agent that currently is in human clinical trials. The purpose of this systematic literature review was to review d-Met’s efficacy in reducing threshold shifts as well as in producing biochemical and physical changes in animal studies vis-à-vis the administration paradigm (preloading, rescue and a combined approach), d-Met dose quantity …
Attitudes Of Speech-Language Pathology/Audiology Students Towards Noise In Youth Culture, Lillian Law
Attitudes Of Speech-Language Pathology/Audiology Students Towards Noise In Youth Culture, Lillian Law
Dissertations, Theses, and Capstone Projects
In order to increase the use of hearing conservation strategies among youth, it is important to identify which populations are most amenable to potential behavior change. The purpose of the present study was to compare attitudes towards noise between undergraduate speech-language pathology/audiology majors and other majors. Participants (N = 119) responded to a survey used to compare attitudes toward noise in the two groups, as well as their perceived ability to influence their sound environment. In addition, a correlational analysis was performed to determine if a relation exists between attitudes towards noise and attitudes towards influencing one's sound environment. Findings …
Efficacy Of N-Acetylcysteine On Prevention And Amelioration Of Cisplatin-Induced Ototoxicity: A Systematic Literature Review, Maryana Peravozchykava
Efficacy Of N-Acetylcysteine On Prevention And Amelioration Of Cisplatin-Induced Ototoxicity: A Systematic Literature Review, Maryana Peravozchykava
Dissertations, Theses, and Capstone Projects
Objective: The purpose of this investigation is to perform a systematic review of the existing literature on NAC efficacy in prevention of cisplatin-induced ototoxicity.
Methods: A comprehensive search utilizing databases via the Mina Rees Library of the Graduate Center of the City University of New York was conducted to identify relevant studies for analysis. The levels of evidence were applied to restrict articles reviewed to Level 3 or better.
Results: Eight articles evaluating NAC protective efficacy against cisplatin-induced ototoxicity were identified. The results revealed significant variability in NAC otoprotective efficacy.
Discussion: The significant variability in findings on NAC otoprotective efficacy …
Attitudes Of Speech-Language Pathology/Audiology Students Towards Noise In Youth Culture, Lillian Law
Attitudes Of Speech-Language Pathology/Audiology Students Towards Noise In Youth Culture, Lillian Law
Dissertations, Theses, and Capstone Projects
In order to increase the use of hearing conservation strategies among youth, it is important to identify which populations are most amenable to potential behavior change. The purpose of the present study was to compare attitudes towards noise between undergraduate speech-language pathology/audiology majors and other majors. Participants (N = 119) responded to a survey used to compare attitudes toward noise in the two groups, as well as their perceived ability to influence their sound environment. In addition, a correlational analysis was performed to determine if a relation exists between attitudes towards noise and attitudes towards influencing one's sound environment. Findings …
The Salience And Perceptual Weight Of Secondary Acoustic Cues For Fricative Identification In Normal Hearing Adults, Derek Petti
The Salience And Perceptual Weight Of Secondary Acoustic Cues For Fricative Identification In Normal Hearing Adults, Derek Petti
Dissertations, Theses, and Capstone Projects
The primary cue used by normal hearing individuals for identification of the fricatives /s/ and /ʃ/ is the most prominent spectrum of frication, which is discrete for this fricative contrast. Secondary cues that influence the identification and discrimination of these fricatives are context dependent. Specifically, the secondary cues that have been found to most significantly impact fricative perception include (a) the second formant transition onset and offset frequencies of a fricative-vowel pair, and (b) the amplitude of the spectral peak in the 2500Hz region of frication relative to an adjacent vowel’s peak amplitude in the same frequency region. However, the …
Neurophysiological Bases Of Frequency Discrimination In Children With Auditory Processing Disorder Or Specific Language Impairment, Christine Rota-Donahue
Neurophysiological Bases Of Frequency Discrimination In Children With Auditory Processing Disorder Or Specific Language Impairment, Christine Rota-Donahue
Dissertations, Theses, and Capstone Projects
The purpose of this study was to determine if 10-12 year old children with Auditory Processing Disorder (APD) or Specific Language Impairment (SLI) could discriminate three different frequency changes behaviorally and electrophysiologically. Behavioral frequency discrimination and event-related potentials were examined using a 1000Hz pure tone base frequency. Typically developing children and children with APD or SLI differed in in their detection of frequency changes: behavioral results were below chance level and the MMN amplitude was smaller in the impaired population. Slight differences between children with APD and children with SLI were also found that might shed light on the controversy …
Communication And Common Interest, Peter Godfrey-Smith, Manolo Martínez
Communication And Common Interest, Peter Godfrey-Smith, Manolo Martínez
Publications and Research
Explaining the maintenance of communicative behavior in the face of incentives to deceive, conceal information, or exaggerate is an important problem in behavioral biology. When the interests of agents diverge, some form of signal cost is often seen as essential to maintaining honesty. Here, novel computational methods are used to investigate the role of common interest between the sender and receiver of messages in maintaining cost-free informative signaling in a signaling game. Two measures of common interest are defined. These quantify the divergence between sender and receiver in their preference orderings over acts the receiver might perform in each state …
Neurophysiological Indices Of The Effect Of Cognates On Vowel Perception In Late Spanish-English Bilinguals, Carol A. Tessel
Neurophysiological Indices Of The Effect Of Cognates On Vowel Perception In Late Spanish-English Bilinguals, Carol A. Tessel
Dissertations, Theses, and Capstone Projects
The field of research in bilingualism and second language (L2) acquisition has yielded overwhelming evidence that acquiring a second language later in life will result in less accurate production and perception of consonants and vowels in the second language. These effects, in part, are a result of interference from the already formed phonetic categories shaped by early exposure to the L1 (Iverson, 2007). Phonetic categories from the L2 will, at least initially, be mapped onto phonetic categories from the L1 (Flege, 1995). Shared storage of similar lexical items from L1 and L2 may also take place resulting in differences in …
“What” And “Where” In Auditory Sensory Processing: A High-Density Electrical Mapping Study Of Distinct Neural Processes Underlying Sound Object Recognition And Sound Localization, Victoria M. Leavitt, Sophie Molholm, Manuel Gomez-Ramirez, John J. Foxe
“What” And “Where” In Auditory Sensory Processing: A High-Density Electrical Mapping Study Of Distinct Neural Processes Underlying Sound Object Recognition And Sound Localization, Victoria M. Leavitt, Sophie Molholm, Manuel Gomez-Ramirez, John J. Foxe
Publications and Research
Functionally distinct dorsal and ventral auditory pathways for sound localization (WHERE) and sound object recognition (WHAT) have been described in non-human primates. A handful of studies have explored differential processing within these streams in humans, with highly inconsistent findings. Stimuli employed have included simple tones, noise bursts, and speech sounds, with simulated left–right spatial manipulations, and in some cases participants were not required to actively discriminate the stimuli. Our contention is that these paradigms were not well suited to dissociating processing within the two streams. Our aim here was to determine how early in processing we …
Stem Cell Replacement Therapy For The Mammalian Inner Ear: A Systematic Literature Review, Robin Warwick
Stem Cell Replacement Therapy For The Mammalian Inner Ear: A Systematic Literature Review, Robin Warwick
Dissertations, Theses, and Capstone Projects
Objective: The purpose of this investigation is to review current possible regeneration techniques for damaged hair cells of the inner ear in mammals. The avian has the ability to spontaneously regenerate damaged hair cells, and thus provides an animal model to simulate a similar response in the mammalian inner ear.
Methods: A systematic review of the literature was conducted using a PubMed database search to address the following question What are the current investigations pertaining to regenerating hair cells using stem cell-based research? The articles were analyzed and rated at Level Ia, Ib, IIa, IIb, or III level of evidence. …
Discrimination Of Tone Contrasts In Mandarin Disyllables By Naïve American English Listeners, Shari Salzhauer Berkowitz
Discrimination Of Tone Contrasts In Mandarin Disyllables By Naïve American English Listeners, Shari Salzhauer Berkowitz
Dissertations, Theses, and Capstone Projects
The present study examined the perception of Mandarin disyllabic tones by inexperienced American English speakers. Participants heard two naturally-produced Mandarin disyllables, and indicated if the two were the same or different. A small native Mandarin-speaking control group participated as well. All 21 possible Mandarin contrasts where the initial syllable varied but the final syllable stayed the same were tested. Acoustic analysis was performed on the stimuli under study. Mandarin subjects scored at ceiling on all contrasts. American English subjects performed poorly on contrasts where the difference in mean F0 was small, or where the difference in the offset F0 of …
Development Of Lexical Tone Production In Disyllabic Words By 2- To 6-Year-Old Mandarin-Speaking Children, Puisan Wong
Development Of Lexical Tone Production In Disyllabic Words By 2- To 6-Year-Old Mandarin-Speaking Children, Puisan Wong
Dissertations, Theses, and Capstone Projects
This study investigated children's development in the production of Mandarin lexical tones in familiar disyllabic words and tested the hypothesis that disyllabic tone contours with more complex fundamental frequency contours are more difficult for children to produce. Participants were forty-four 2- to 6-year-old monolingual Mandarin-speaking children and 12 mothers. Their disyllabic tone productions were elicited by picture naming and low-pass filtered to eliminate lexical information while retaining the fundamental frequency contours. Three Mandarin-speaking judges listened to the filtered stimuli, and categorized the children's and adult's disyllabic tones. Acoustic analysis was performed on selected accurate child and adult productions and on …
Markers Of Dyslexia In Adult Spanish-Speakers Who Report Severe Difficulty Learning English, Elizabeth Ijalba
Markers Of Dyslexia In Adult Spanish-Speakers Who Report Severe Difficulty Learning English, Elizabeth Ijalba
Dissertations, Theses, and Capstone Projects
The relationship between native-language reading ability and second-language (L2) learning was explored in a cohort of 60 adult Spanish-speakers learning English as a second language. The research questions centered on whether underlying nativelanguage deficits associated with dyslexia would be present in a subset of English Language Learners who reported severe difficulty learning English. Our participants were divided into two education groups (below and above12th grade). These two groups were classified into three groups based on self- and teacher- ratings of ease or difficulty in English learning ability: for the high-education group, Poor English Language Learners (PELL, N=7); Good English Language …
Speech Perception And Lexical Effects In Specific Language Impairment: The Effects Of Vowel Duration And Word Knowledge On Perception Of Final Alveolar Stop Voicing, Frances L.V. Scheffler
Speech Perception And Lexical Effects In Specific Language Impairment: The Effects Of Vowel Duration And Word Knowledge On Perception Of Final Alveolar Stop Voicing, Frances L.V. Scheffler
Dissertations, Theses, and Capstone Projects
The perception of temporal speech cues, lexical knowledge, and their interactions were examined in children (6;0-9;6) with specific language impairment (SLI). An identification task was used to test four 12-step speech continua: word-word (FEET—FEED), nonword-nonword (ZEST—ZEED), word-nonword (CHEAT—CHEED) and nonword-word (REAT—READ). The stimuli were naturally recorded and digitally edited. The vowel steady state, which varied in duration from 110 to 350 milliseconds in 20-millisecond steps, was the acoustic cue to the voicing characteristic of the final consonant in each stimulus. The analyses revealed that both the TLD and SLI groups used vowel duration as a perceptual cue. For the word-word …
The Contribution Of Interaural Intensity Differences To The Horizontal Auditory Localization Of Narrow Bands Of Noise, Matthew H. Bakke
The Contribution Of Interaural Intensity Differences To The Horizontal Auditory Localization Of Narrow Bands Of Noise, Matthew H. Bakke
Dissertations, Theses, and Capstone Projects
Brief bursts of third-octave bands of noise (center frequencies at 0.5, 1.0, 2.0 and 4.0 kHz) and band pass noises with different degrees of low-frequency content (0.5 to 4.0 kHz, 1.0 to 4.0 kHz and 2.0 to 4.0 kHz) were recorded binaurally from 17 different horizontal locations (90 degrees on the left to 90 degrees on the right in 11.25 degree steps) one meter from the ears of an anthropomorphic mannequin (KEMAR) in an anechoic room and a reverberant room. The recorded sounds were processed by attenuating or removing interaural intensity differences and presented to five normally hearing subjects through …
Use Of Verb Inflections In The Oral Expression Of Agrammatic Spanish-Speaking Aphasics, Jose Gregorio Centeno
Use Of Verb Inflections In The Oral Expression Of Agrammatic Spanish-Speaking Aphasics, Jose Gregorio Centeno
Dissertations, Theses, and Capstone Projects
Studies on agrammatic verb errors have basically addressed the production of verb forms as whole lexical units without looking at their inflectional affixes. There has been limited research assessing the possible role of the variables encapsulated in verbal inflections in verb access and retrieval. The purpose of this investigation was to, first, address the possible factors causing a hierarchy of sparing in Spanish verb inflections, and, second, extend the explanatory factors proposed by earlier cross-linguistic investigations on verb inflectional performance by agrammatic speakers. This investigation studied the production of verb inflections by agrammatic Spanish speakers in a sentence repetition task. …
Automatic And Controlled Information Processing In Alzheimer's Disease, Linda S. Carozza
Automatic And Controlled Information Processing In Alzheimer's Disease, Linda S. Carozza
Dissertations, Theses, and Capstone Projects
This research investigation explored the cognitive processing operations of 18 healthy elderly (HE) subjects and 12 Alzheimer's Disease (AD) subjects in the mild clinical stage of the disease in their performance on a semantic priming task involving semantic lexical activations of both automatic and controlled processing natures.
Relatively little conclusive evidence has been documented regarding the relative roles of attention and memory processing in the lexical-semantic impairment of Alzheimer's Disease. A lexical decision processing task was implemented to investigate the effects of normal aging and neuropathological damage of Alzheimer's Disease on subjects' semantic priming abilities. The research design was based …
Parsing Routines In Syntactic Processing: The Effect Of Expected Word Order On Sentence Comprehension, Ann Dibella Jablon
Parsing Routines In Syntactic Processing: The Effect Of Expected Word Order On Sentence Comprehension, Ann Dibella Jablon
Dissertations, Theses, and Capstone Projects
Two experiments were conducted to test the SVO Expectancy Hypothesis. This hypothesis embodies three claims: (a) the syntactic parsing device has an initial expectation for the SVO (syntactically defined) structure, (b) the parser reads or tracks the syntactic information in the utterance to confirm or adjust its predictions, and (c) the parser has the ability to make on-line revisions based on the syntactic information contained within the utterance.
In the first experiments using tachistoscopic presentation, 75 sentences representing 15 different sentence types were read by subjects. Each type varied in structure and in the clarity of markers, used to indicate …
Parsing Routines In Syntactic Processing: The Effect Of Expected Word Order On Sentence Comprehension, Ann Dibella Jablon
Parsing Routines In Syntactic Processing: The Effect Of Expected Word Order On Sentence Comprehension, Ann Dibella Jablon
Dissertations, Theses, and Capstone Projects
Two experiments were conducted to test the SVO Expectancy Hypothesis. This hypothesis embodies three claims: (a) the syntactic parsing device has an initial expectation for the SVO (syntactically defined) structure, (b) the parser reads or tracks the syntactic information in the utterance to confirm or adjust its predictions, and (c) the parser has the ability to make on-line revisions based on the syntactic information contained within the utterance.
In the first experiments using tachistoscopic presentation, 75 sentences representing 15 different sentence types were read by subjects. Each type varied in structure and in the clarity of markers, used to indicate …
A Sentence Test Of Speech Perception: Reliability, Set Equivalence, And Short Term Learning, Arthur Boothroyd, Laurie Hanin, Theresa Hnath
A Sentence Test Of Speech Perception: Reliability, Set Equivalence, And Short Term Learning, Arthur Boothroyd, Laurie Hanin, Theresa Hnath
Publications and Research
The general goal of this project is to study the processes and outcomes of speech perception training in postlingually deafened adults fitted with cochlear implants. As part of this work we need to measure speech perception performance, using materials that place different relative emphases on the several components of the speech perception process. One of the materials that we have developed consists of 48 sets of topic-related sentences (see report #RCIl). These sets have been videorecorded by one female talker. One of the audio tracks contains the full acoustical signal. The other contains the output from an electroglottograph and consists …
The Effect Of Cochlear Dysfunction On Central Auditory Speech Test Performance, Barbara Ann Goldstein
The Effect Of Cochlear Dysfunction On Central Auditory Speech Test Performance, Barbara Ann Goldstein
Dissertations, Theses, and Capstone Projects
The major purpose of this study was to explore the effect of cochlear dysfunction on central auditory speech test performance. There has been limited research reported concerning the effects of peripheral hearing loss occurring in the absence of central auditory pathology on tests specifically designed to diagnose central auditory impairment. Similarly, there has been limited research reported concerning the effects of peripheral hearing loss in the presence of central auditory pathology on tests designed specifically for the evaluation and diagnosis of central auditory pathology. Despite the lack of such data, these tests are frequently performed on individuals with cochlear pathology, …
Predicting Consonant Confusions In Noise On The Basis Of Acoustical Analyses, Judy Robin Dubno
Predicting Consonant Confusions In Noise On The Basis Of Acoustical Analyses, Judy Robin Dubno
Dissertations, Theses, and Capstone Projects
No abstract provided.
The Velopharyngeal Mechanism: An Electromyographic Study, Fredericka Bell-Berti
The Velopharyngeal Mechanism: An Electromyographic Study, Fredericka Bell-Berti
Dissertations, Theses, and Capstone Projects
No abstract provided.
Non-Metric Scaling Of Loudness, Alan M. Richards
Non-Metric Scaling Of Loudness, Alan M. Richards
Dissertations, Theses, and Capstone Projects
Determination of loudness scales for 1000 Hz stimuli by conventional ratio scaling methods have yielded loudness functions which grow as approximately the 0.54 power of sound pressure. Thus, two-fold loudness differences are equivalent to approximately 10 dB across the auditory continuum. The unidimensional representation of loudness ss a power function of sound intensity implies that if A is twice as loud as B, which, in turn, is twice as loud C, the A will be four times as loud as C. In order to test this implication across the auditory continuum loudness ratio estimates were obtained from four 7x7 matrices …