Download or read book The Use of Artificial Neural Networks to Predict Pure Tone Thresholds in Normal and Hearing impaired Ears with Distortion Product Otoacoustic Emissions written by Rouviere De Waal and published by . This book was released on 1998 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Objective Prediction of Pure Tone Thresholds in Normal and Hearing impaired Ears with Distortion Product Otoacoustic Emissions and Artificial Neural Networks written by Rouviere De Waal and published by . This book was released on 2000 with total page 259 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dissertation Abstracts International written by and published by . This book was released on 2002 with total page 896 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Relations of Race and Gender to Distortion Product Otoacoustic Emissions written by Lara L. Gingerich and published by . This book was released on 1998 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Predicting Auditory Thresholds of Sensorineural Hearing Loss Using Distortion Product Otoacoustic Emissions written by Kristen Lewis and published by . This book was released on 2000 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Comparison of ABR Thresholds Using Linear Versus Blackman Gating Functions for Predicting Pure Tone Thresholds in Hearing impaired Subjects written by Emily Louise Vanides and published by . This book was released on 2004 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Threshold Estimation in Normal and Impaired Ears Using Auditory Steady State Responses written by Riette Bosman and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The Auditory Steady State Response (ASSR) procedure has been established as a frequency specific, objective audiologic measure, which can provide reliable thresholds to within 10 dB of the behavioral thresholds. In order for ASSR to find its place in the existing framework of audiometric procedures, the full potential of the procedure needs to be explored. The aim of this study was to determine the accuracy of monotic ASSR in estimating hearing thresholds in a group of 15 normal hearing subjects and 15 hearing-impaired subjects. A comparative research design was implemented. Indicating that results obtained in the study was compared to relevant literature where dichotic multiple ASSR was implemented. This was done in order to ascertain ASSR's capabilities with regard to stimulus presentation methods. Monotic single ASSR predicted behavioural thresholds in the normal hearing subjects within an average of 24 dB across the frequency range (0.5, 1, 2 & 4 kHz). In the hearing-impaired group, ASSR thresholds more closely resembled behavioural thresholds, with an average difference of 18 dB, which is consistent with recent literature. The literature suggests that better prediction of behavioural thresholds will occur with greater degrees of hearing loss, due to recruitment. The focus in this group also centered on the accurate prediction of the configuration of the hearing loss. It was found that ASSR could reasonably accurately predict the configuration of the hearing loss. In the last instance, monotic single and dichotic multiple ASSR were compared with regard to threshold estimation and prediction of configuration of the hearing loss in the hearing-impaired group. Little difference was reported between the two techniques with regard to the estimation of thresholds in both the normal hearing and hearing impaired groups. In conclusion it was established that monotic ASSR could predict behavioural thresholds of varying degrees and configurations of hearing loss in normal and hearing-impaired subjects with a reasonable amount of accuracy. At this stage, however, more research is required to establish the clinical validity of the procedure, before it is routinely included within an objective test battery.
Download or read book The Use of Distortion Product Otoacoustic Emissions in Comparison to Pure Tone Hearing Screening in a Preschool Population written by Elizabeth Schehlein and published by . This book was released on 2009 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Growth of Distortion Product Otoacoustic Emissions in Normal Hearing and Hearing Impaired Adults written by Debra M. Wilson and published by . This book was released on 1993 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Comparison of Thresholds for Speech Sounds in the Ling Five Sound Test with Pure Tone Thresholds in Normal Hearing and Hearing impaired Subjects written by Jonell M. Block and published by . This book was released on 2002 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Microscopic Model of Speech Recognition for Listeners with Normal and Impaired Hearing written by Tim Jürgens and published by . This book was released on 2011 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation presents a microscopic model of human speech recognition (HSR), microscopic in a sense that first, the recognition of single phonemes rather than the recognition of whole sentences is modeled. Second, the particular spectro-temporal structure of speech is processed by an auditory model. This contrasts with other models of HSR, which usually use the spectral structure only. The model is capable of predicting phoneme recognition in normal-hearing (NH) listeners in noise along with important aspects of consonant recognition in quiet. Furthermore, this model is extended for the prediction of sentence recognition. The extension is capable of predicting speech recognition of NH and hearing-impaired (HI) listeners as accurately as a standard speech intelligibility model. Parameters reflecting the supra-threshold auditory processing are assessed in NH and HI listeners using psychoacoustical techniques such as forward masking and categorical loudness scaling. These supra-threshold auditory processing deficits are included in the model and the results show that implementing supra-threshold processing improves prediction accuracy. engl.
Download or read book Physiology Psychoacoustics and Cognition in Normal and Impaired Hearing written by Pim van Dijk and published by Springer. This book was released on 2016-04-14 with total page 487 pages. Available in PDF, EPUB and Kindle. Book excerpt: The International Symposium on Hearing is a prestigious, triennial gathering where world-class scientists present and discuss the most recent advances in the field of human and animal hearing research. The 2015 edition will particularly focus on integrative approaches linking physiological, psychophysical and cognitive aspects of normal and impaired hearing. Like previous editions, the proceedings will contain about 50 chapters ranging from basic to applied research, and of interest to neuroscientists, psychologists, audiologists, engineers, otolaryngologists, and artificial intelligence researchers.
Download or read book Pure tone Masking by Narrow Noise Bands in Normal and Impaired Ears written by Paul Anthony Rittmanic and published by . This book was released on 1961 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Growth of Suppression Using Distortion product Otoacoustic Emission Measurements in Hearing impaired Humans written by Cori Birkholz and published by . This book was released on 2013 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Neural Correlates of Auditory Processing Following Exposure to an Augmented Acoustic Environment written by Adam Christopher Dziorny and published by . This book was released on 2009 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Each year as many as 3/1000 children are diagnosed with congenital sensorineural hearing loss. Common in these children are delays in grammar comprehension, vocabulary retention and speech development, related to temporal processing abilities. Studies in a mouse model of congenital sensorineural hearing loss suggest that early exposure to an augmented acoustic environment (AAE) limits outer hair cell death and maintains peripheral auditory thresholds. However, there have been no studies on the effects of AAE on neural encoding in the central auditory system. The goal of these experiments is to investigate midbrain auditory processing in a mouse model (the DBA strain) of sensorineural hearing loss, and determine the effects of AAE exposure. It is clear that sound exposure during the early developmental period has profound effects on neural processing in the central auditory system of normal-hearing subjects. Questions remain on the effects of such sound exposure on a model of hearing impairment. In Aim I of this study we presented a novel temporal AAE containing silent gaps embedded in noise bursts to DBA mice and examined the frequency representation, intensity encoding and temporal processing in the auditory midbrain. Mice were exposed to a traditional AAE stimulus, a novel temporal AAE stimulus, or no stimulus from birth to P30. Auditory brainstem responses (ABRs) and distortion product otoacoustic emissions (DPOAEs) were recorded to assess peripheral auditory function. To assess the effects on central auditory processing we recorded neural activity from a 16-channel electrode in the inferior colliculus (IC). We confirmed peripheral preservation with AAE exposure, and expanded these results to demonstrate outer hair cell functional preservation. In the midbrain we demonstrated that IC neurons showed decreased thresholds, that high best-frequency units were maintained, tuning sharpness was improved, excitatory drive was increased and most importantly, units displayed shorter neural gap thresholds. Additionally, only mice exposed to our novel temporal AAE demonstrated significantly shortened mean gap threshold at low carrier levels, and in the presence of continuous background noise. To be useful as a therapeutic intervention the effect of onset time on central auditory function must be examined. Additionally, it is not known if the improvements provided by AAE exposure will remain after exposure cessation. In Aim II of this study we asked whether delaying the exposure onset or altering its duration influence the improvements in neural processing noted above. Again DBA mice were exposed to a traditional AAE stimulus or no stimulus from birth to P60. Two additional groups were included, one exposed for 30 days followed by 30 days of no exposure (On/Off), the other not exposed until P30 followed by 30 days of exposure (Off/On). All animals were tested at P60. Again ABRs and DPOAEs were recorded to assess peripheral auditory function, and central auditory processing was measured using a 16-channel electrode in the IC. We determined that the onset time of exposure is of little importance in demonstrating improvements in both peripheral and central auditory system. However, continued exposure is essential to maintain the beneficial effects and limit functional loss. Our results demonstrate that AAE preserves peripheral structure and function and improves central auditory processing, that a targeted temporal AAE can improve neural correlates of temporal processing, and that the timing of AAE is essential in delaying the progression of sensorineural hearing loss. These experiments pave the way for possible therapeutic intervention in children suffering congenital sensorineural hearing loss."--Leaves v-vi.
Download or read book Essentials of Audiology written by Stanley A. Gelfand and published by . This book was released on 1997-01-01 with total page 562 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Comparison of Detection Thresholds for Puretone Audiometry and Verbo tonal Audiometry filtered and Nonfiltered Speech Stimuli in Normal hearing and Impaired hearing Populations written by Sally Ann Plummer and published by . This book was released on 1964 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt:
