Download or read book Cumulative Auditory Fatigue written by James F. Jerger and published by . This book was released on 1958 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt: The cumulative effects of repeated fatigue-producing stimuli on threshold recovery time were explored as a function of the intensity of the fatiguing stimulus in 26 normal ears. Results demonstrated a cumulative effect on recovery time for the threshold at 4500 cps when the SPL of the 3000-CPS fatiguing tone equaled or exceeded 95 db. Functions relating cumulative effect to fatiguing intensity exhibited sharp breaks in the 100-105 db region, suggesting, in still another form, the critical intensity phenomenon so often demonstrated in other fatigue measures. Intercorrelations between both absolute and cumulative effects at different fatiguing intensities were weak, suggesting that the cumulative effects evoked by one level of fatiguing intensity may bear no predictive relation to the cumulative effects evoked by another level.

Download or read book The Cumulative Effect of Auditory Fatigue Following Repeated High Level Pure Tone Stimulation written by Gordon Lee Stanfield and published by . This book was released on 1967 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Noise Induced Hearing Loss Resulting from Cumulative Fatigue Damage of Cochlear Hair Cells written by Patrick James Hartman and published by . This book was released on 1976 with total page 496 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Studies in Short Duration Auditory Fatigue II The Effect of the Duration of the Stimulating Tone III The Effect of the Interval Between Stimuli written by J. Donald Harris and published by . This book was released on 1950 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: This series of two experiments investigated the auditory fatigue caused by pure tones up to 70 db sensation level and 0.1 to 10 seconds in duration, and charted the very quick recovery from these relatively mild stimuli. No cumulative fatigue effects were found up to 5 seconds of stimulation, and only a slight cumulative effect between 5 and 10 seconds at the louder levels. The fatigue occasioned by such tones is transitory, disappearing within a half-second or less. The course of its disappearance is exponential or nearly so for all stimuli used. (Author).

Download or read book A Central Factor in Pure Tone Auditory Fatigue written by Joel S. Wernick and published by . This book was released on 1963 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Auditory Fatigue written by Angelo Mirabella and published by . This book was released on 1964 with total page 51 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Effect of Auditory Fatigue on Reaction Time in Normal Hearing Listeners written by and published by . This book was released on 2015 with total page 35 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hearing impaired individuals often report feeling fatigue at the end of the day. These individuals are forced to exert more cognitive effort throughout the day as they strain to understand speech in an ever-changing auditory environment through an impaired/degraded auditory system (Rabbitt, 1991). Today's digital hearing aids attempt to increase audibility and relieve cognitive strain through advanced signal processing techniques such as digital noise reduction (DNR). Recent research regarding noise and its effects on auditory fatigue in hearing impaired listeners suggests that DNR may reduce the effects of auditory fatigue (Sarampalis et al, 2009). The overarching goal of a future project is to understand the effectiveness of DNR in reducing listening effort and ways to quantify it. The present study sought to determine if reaction time alone is an accurate measure of auditory fatigue while isolating listening fatigue as a sole factor. Twenty young adults with normal hearing participated. Testing consisted of three parts: pre-test, fatigue inducing condition, and post-test. Pre- and post- tests consisted of a reaction time task using nonsense syllables and a subjective listening questionnaire. The overall reaction time in the post-fatiguing condition was higher than the pre-fatiguing condition. A one sample t test revealed no significant difference between the pre and post fatiguing condition reaction time for overall nonsense syllables and consonant final nonsense syllables. Pre- and post-fatiguing reaction time was significantly different for consonant initial nonsense syllables only. Results indicated that the 30 minute fatigue inducing condition did not affect reaction time in the post-tests for overall nonsense syllables and for consonant final nonsense syllables. This could be due to several factors. The reaction time task used in this study may not be an accurate measure of listening effort or the 30 minutes of effortful listening may not have been enough. The subjective listening effort questionnaire showed that subjects did feel more fatigued after the post-test than after the pre-test. Future studies are planned to expand upon the current study by assessing individuals with hearing loss as well as those exposed to longer duration of noise throughout the day.

Download or read book Auditory Fatigue and Adaptation written by Sir Alexander William Gordon Ewing and published by . This book was released on 1935* with total page 307 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Central Factor in Pure Tone Auditory Fatigue written by Joel S. Wernick and published by . This book was released on 1963 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: A long accumulation of psychophysical and physiological evidence indicates that auditory fatigue has its locus of effect in the cochlea; transfer studies with negative or questionable results, and studies of cochlear chemistry and potentials with positive results all lead to the same conclusion. However, Galambos's reports of inhibition through efferent stimulation taken together with his findings of changes in cochlear potentials corresponding to differences in 'attentiveness' provide a basis for testing the existence of a central factor operative in auditory fatigue. The present study was designed to evaluate the possibility that a listener's level of mental activity constitutes an adequate central factor. Subjects were presented with a 4000 cps, 40 dB SL or 90 dB SL tone for 3 minutes under conditions of (a) a mental task or (b) reverie. Pre- and post-fatigue thresholds were measured with a switched (0.2 sec on, 0.2 sec off) tone. For low level (40 dB) fatigue the frequency of the test tone was 4000 cps and for high level (90 dB) fatigue, 5656 cps. Subjects consistently showed greater temporary threshold shift and longer recovery time when the fatiguing tone was presented in the mental task condition. Results thus indicate a central factor in pure tone auditory fatigue. It is suggested that the degree of effect of a fatiguing tone is a function of the listener's degree of mental activity during stimulation. (Author).

Download or read book A Quantitative Account of the Course of Auditory Fatigue written by Alvin Graydon Wood and published by . This book was released on 1930 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Auditory Fatigue written by Raoul Caussé and published by . This book was released on 1968 with total page 35 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Study of Reversible Auditory Fatigue Resulting from Exposure to a Pure Tone written by Aubrey Epstein and published by . This book was released on 1953 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Loudness Effects Based Upon Auditory Fatigue written by Frank Biggs and published by . This book was released on 1957 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Auditory fatigue written by A. F. Rawdon Smith and published by . This book was released on 1934 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Auditory Fatigue Produced by Monofrequency Clicks written by Sally Jane Ewalt and published by . This book was released on 1965 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Cumulative Effects of Repeated Exposure to Highintensity Tones Upon Recovery of Auditory Sensitivity written by Vernon C. Bragg and published by . This book was released on 1963 with total page 1 pages. Available in PDF, EPUB and Kindle. Book excerpt: Twenty subjects with normal hearing were subjected to four series of twenty one-minute exposures of a 3000 cps tone. Each series of exposure tones was presented at one of four sound pressure levels: 85db, 90db, 95db, or 100db above 0.0002 microbar. The time required for threshold for a 4500 cps pulsed tone to recover to within 20db and 10db of pre-exposure level was measured after each one-minute exposure. The pattern of recovery times indicated that (a) there is a critical intensity (95db in the present conditions) below which adaptation is evoked and above which cumulative fatigue results from exposure, and (b) cumulative fatigue holds more promise than adaptation in the development of a noise-susceptibility test. (Author).

Download or read book Auditory Fatigue During Articulation written by Barry Frederick Luterman and published by . This book was released on 1969 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt: