Treatments
... It is not known which materials are best, from a biocompatibility and ossointegration point of view, based on clinical data. In the past, almost all trials only considered a single material, in a single design. Experimenter bias, lack of control, and variation in evaluation of results render inconcl ...
... It is not known which materials are best, from a biocompatibility and ossointegration point of view, based on clinical data. In the past, almost all trials only considered a single material, in a single design. Experimenter bias, lack of control, and variation in evaluation of results render inconcl ...
Chapter 2
... Theories of Hearing There are several theories regarding the manner in which sound is perceived by the human ear. The following are several of the most common and accepted theories. The Place Theory The place theory is based on the assumption that pitch discrimination is determined by a certain plac ...
... Theories of Hearing There are several theories regarding the manner in which sound is perceived by the human ear. The following are several of the most common and accepted theories. The Place Theory The place theory is based on the assumption that pitch discrimination is determined by a certain plac ...
doc - הפקולטה להנדסה
... For predicting otoacoustic emissions, Yaniv Halmut (2005) introduced a modification to the model based on the work carried out by Tallmadge at 1998. The modified model incorporates Tallmadge's' middle ear model into the basic Cohen and Furst model. The modified model was able to predict generation o ...
... For predicting otoacoustic emissions, Yaniv Halmut (2005) introduced a modification to the model based on the work carried out by Tallmadge at 1998. The modified model incorporates Tallmadge's' middle ear model into the basic Cohen and Furst model. The modified model was able to predict generation o ...
- Thieme Connect
... canal and the stiffness and density of the ear canal wall. This limitation is a serious problem when trying to measure the impedance of the infant ear, because their canal walls are quite flaccid.5,6 This is less of a problem in older children and adults,7 and the pressure variationbased tympanometr ...
... canal and the stiffness and density of the ear canal wall. This limitation is a serious problem when trying to measure the impedance of the infant ear, because their canal walls are quite flaccid.5,6 This is less of a problem in older children and adults,7 and the pressure variationbased tympanometr ...
A Forgotten Technique For Resolving The Occlusion
... vent is, the less acoustic mass it contains when compared to a longer vent. We also expect that as the SPL inside the canal is reduced, the patient’s perception of the “hollow” sensation will also subside. Add to this the effect of slit leak (which also produces escape of low-frequency SPLs), and wi ...
... vent is, the less acoustic mass it contains when compared to a longer vent. We also expect that as the SPL inside the canal is reduced, the patient’s perception of the “hollow” sensation will also subside. Add to this the effect of slit leak (which also produces escape of low-frequency SPLs), and wi ...
Developing an ellipsoidal reflector for measuring otoacoustic
... Otoacoustic emissions (OAEs) are faint sounds emanating from the ear. The level of these sounds is usually too low to be heard, but they can be measured with a sensitive microphone and techniques designed for the purpose. OAEs can be evoked with a sound stimulus but they can be present also without ...
... Otoacoustic emissions (OAEs) are faint sounds emanating from the ear. The level of these sounds is usually too low to be heard, but they can be measured with a sensitive microphone and techniques designed for the purpose. OAEs can be evoked with a sound stimulus but they can be present also without ...
Perception of amplitude modulation by hearing
... conducted on the percent correct scores for the hearingimpaired listeners, with factors ratio f target / f comp and frequencies of the flanking components. There was a significant main effect of the ratio f target / f comp; F共3 , 21兲 = 28.55, p ⬍ 0.001. This suggests an ability to hear out the targ ...
... conducted on the percent correct scores for the hearingimpaired listeners, with factors ratio f target / f comp and frequencies of the flanking components. There was a significant main effect of the ratio f target / f comp; F共3 , 21兲 = 28.55, p ⬍ 0.001. This suggests an ability to hear out the targ ...
Effectiveness of Earplugs in Preventing Recreational Noise–Induced
... he prevalence of acquired hearing loss has risen in past years. The US National Health and Nutrition Examination Survey found that the prevalence of adolescents with hearing loss has increased by 31% in the 2 decades since 1988.1 An explanation for this trend is the increase in exposure to recreatio ...
... he prevalence of acquired hearing loss has risen in past years. The US National Health and Nutrition Examination Survey found that the prevalence of adolescents with hearing loss has increased by 31% in the 2 decades since 1988.1 An explanation for this trend is the increase in exposure to recreatio ...
Binaural hearing ability with mastoid applied bilateral bone
... presented binaurally with a short inter-aural time delay. The stimulus was a 1 second noiseburst with a low-frequency content (LF noise, 400-600 Hz), high-frequency content (HF noise, 3000-5000 Hz), or broadband content (BB noise, 200-6000 Hz). The stimulus had a 1 ms sine2 rise and fall. The appare ...
... presented binaurally with a short inter-aural time delay. The stimulus was a 1 second noiseburst with a low-frequency content (LF noise, 400-600 Hz), high-frequency content (HF noise, 3000-5000 Hz), or broadband content (BB noise, 200-6000 Hz). The stimulus had a 1 ms sine2 rise and fall. The appare ...
Hearing Aids
... Come in different materials Mercury (banned), silver oxide, zinc-air Materials can be used interchangeable, but battery life might vary ...
... Come in different materials Mercury (banned), silver oxide, zinc-air Materials can be used interchangeable, but battery life might vary ...
ARTICLES - Journal of Student Science and Technology
... a theoretical fundamental frequency, the sound heard by the human ear may be quite different due to this single-note dissonance effect. Lower-register note self-dissonance is also important to music theory, as well as reconsidering any unnatural use of low pure tones instead of bass notes during aco ...
... a theoretical fundamental frequency, the sound heard by the human ear may be quite different due to this single-note dissonance effect. Lower-register note self-dissonance is also important to music theory, as well as reconsidering any unnatural use of low pure tones instead of bass notes during aco ...
Chapter 4 Otoacoustic Emissions
... DPOAE amplitudes decrease, albeit by small magnitudes, as age increases (Dorn et al., 1998; Uchida, Ando, Shimokata, Sugiura, Ueda & Nakashima, 2008). The finding that DPOAE amplitudes deteriorate with age has led to the hypothesis among researchers that there may be a process specific to aging that ...
... DPOAE amplitudes decrease, albeit by small magnitudes, as age increases (Dorn et al., 1998; Uchida, Ando, Shimokata, Sugiura, Ueda & Nakashima, 2008). The finding that DPOAE amplitudes deteriorate with age has led to the hypothesis among researchers that there may be a process specific to aging that ...
Hearing Risk among Young Personal Listening Device Users
... volume setting) and measured levels from the iPod test in decibels. There was a strong correlation between the self-reported and measured levels (Pearson’s correlation test, r=0.764, p<0.001). Although two female subjects had indicated that they used their device at 100% volume setting on the self-r ...
... volume setting) and measured levels from the iPod test in decibels. There was a strong correlation between the self-reported and measured levels (Pearson’s correlation test, r=0.764, p<0.001). Although two female subjects had indicated that they used their device at 100% volume setting on the self-r ...
Wind Turbine Sound and Health Effects
... Certain terms are used frequently throughout this report. Table 1-1 defines these terms. An understanding of the distinction between “sound” and “noise” may be particularly useful to the reader. TABLE 1-1 ...
... Certain terms are used frequently throughout this report. Table 1-1 defines these terms. An understanding of the distinction between “sound” and “noise” may be particularly useful to the reader. TABLE 1-1 ...
Industrial Audiology lectures handout
... •After 1 complete cycle, the vibrations associated with SHM are repetitive, like going around a circle (0° to 360°) •Phase describes what part of the cycle the vibrating body is in… -or where in the cycle it begins, or -the difference between two bodies vibrating simultaneously •The duration of one ...
... •After 1 complete cycle, the vibrations associated with SHM are repetitive, like going around a circle (0° to 360°) •Phase describes what part of the cycle the vibrating body is in… -or where in the cycle it begins, or -the difference between two bodies vibrating simultaneously •The duration of one ...
Towards a Diagnosis of Cochlear Neuropathy with Envelope
... Mice were anesthetized with ketamine (100 mg/kg i.p.) and xylazine (20 mg/kg i.p.). Recordings were conducted in an acoustically and electrically shielded room held at 30 °C. Custom LabVIEW and MATLAB software controlling National Instruments 24-bit digital input/output boards generated all stimuli ...
... Mice were anesthetized with ketamine (100 mg/kg i.p.) and xylazine (20 mg/kg i.p.). Recordings were conducted in an acoustically and electrically shielded room held at 30 °C. Custom LabVIEW and MATLAB software controlling National Instruments 24-bit digital input/output boards generated all stimuli ...
Visual reinforcement audiometry in infants who born term and preterm
... few months are critical to the development of auditory skills, of detection, discrimination, location, recognition and understanding4.5. An important aspect related to the hearing of newborns and infants is the knowledge of Risk Factors for Hearing Loss (RFHLs), as these can influence the developmen ...
... few months are critical to the development of auditory skills, of detection, discrimination, location, recognition and understanding4.5. An important aspect related to the hearing of newborns and infants is the knowledge of Risk Factors for Hearing Loss (RFHLs), as these can influence the developmen ...
Recreational Noise and Its Potential Risk to Hearing
... little data to prove that abusive use of PLDs is widespread and will be responsible for an epidemic of NIHL in young people. There is no doubt that PLDs can produce sound levels capable of doing damage to hearing, but whether or not people use PLDs at such high levels for a sufficiently long enough ...
... little data to prove that abusive use of PLDs is widespread and will be responsible for an epidemic of NIHL in young people. There is no doubt that PLDs can produce sound levels capable of doing damage to hearing, but whether or not people use PLDs at such high levels for a sufficiently long enough ...
Effects of a Suppressor Tone on Distortion Product Otoacoustic
... Hoover, 2000). Use of these statistical tools and multiple indexes typically results in improved predictability of auditory status. For example, Gorga et al. (2000) reported ROC area curves ⬎0.95% and specificities ⬎92% when distinguishing normal-hearing ears from those with hearing loss. Input-Outp ...
... Hoover, 2000). Use of these statistical tools and multiple indexes typically results in improved predictability of auditory status. For example, Gorga et al. (2000) reported ROC area curves ⬎0.95% and specificities ⬎92% when distinguishing normal-hearing ears from those with hearing loss. Input-Outp ...
Evaluation of transcutaneous Bone Conduction Implant with a
... The vibrations are transferred to the three joined ossicles located in the middle ear, the malleus, the incus and the stapes. These bones connect the middle ear to the inner ear with the malleus contacting the thympanic membrane and the stapes contacting the oval window located in the inner ear. The ...
... The vibrations are transferred to the three joined ossicles located in the middle ear, the malleus, the incus and the stapes. These bones connect the middle ear to the inner ear with the malleus contacting the thympanic membrane and the stapes contacting the oval window located in the inner ear. The ...
Reverse Transmission along the Ossicular Chain in Gerbil
... manubrium, and TM were made at an angle to the piston-like direction. Because our goal is to compare forward and reverse transmission, no correction for the viewing angle was needed or performed. With equal intensity and f2/f1 ratio of 1.05, the DPOAEs 2f1–f2 and 2f2–f1 were similar to each other in ...
... manubrium, and TM were made at an angle to the piston-like direction. Because our goal is to compare forward and reverse transmission, no correction for the viewing angle was needed or performed. With equal intensity and f2/f1 ratio of 1.05, the DPOAEs 2f1–f2 and 2f2–f1 were similar to each other in ...
Pure Tone Audiometry
... configuration of loss and do not exclude additional terms e.g. highfrequency loss. Although hearing levels of better than 20 dB HL are within the normal range, they do not necessarily imply normal hearing as there may be additional factors involved. (The banana shaped section is where speech sounds ...
... configuration of loss and do not exclude additional terms e.g. highfrequency loss. Although hearing levels of better than 20 dB HL are within the normal range, they do not necessarily imply normal hearing as there may be additional factors involved. (The banana shaped section is where speech sounds ...
The effect of stimulus-frequency ratio on distortion product
... 1.225; DPOAE results were considered ‘‘desirable’’ when the signal-to-noise ratio between DPOAE-level maxima and the noise floor was approximately 20 dB or greater and distinct fine structure was observed in some frequency ranges. The presence or absence of SOAEs was not used to determine eligibilit ...
... 1.225; DPOAE results were considered ‘‘desirable’’ when the signal-to-noise ratio between DPOAE-level maxima and the noise floor was approximately 20 dB or greater and distinct fine structure was observed in some frequency ranges. The presence or absence of SOAEs was not used to determine eligibilit ...
Integrating cochlear dead region diagnosis into the hearing
... criteria for a DR are met at 1.5 and 2 kHz. Therefore, pure tones with frequencies of 1.5 kHz and above are being detected by offfrequency listening. The DR appears to commence somewhere between 1 and 1.5 kHz. A more precise estimate of the edge frequency would require measurement of masked threshol ...
... criteria for a DR are met at 1.5 and 2 kHz. Therefore, pure tones with frequencies of 1.5 kHz and above are being detected by offfrequency listening. The DR appears to commence somewhere between 1 and 1.5 kHz. A more precise estimate of the edge frequency would require measurement of masked threshol ...
Linköping University Post Print Implications for contralateral bone conducted
... contribute equally, the increase becomes 3 dB (doubling of the sound energy) which is the case for all positions at low frequencies. As in Figure 7 there is an increase for most stimulation positions in the frequency range 0.3 to 1.0 kHz, again due to the ipsilateral antiresonance. At frequencies ab ...
... contribute equally, the increase becomes 3 dB (doubling of the sound energy) which is the case for all positions at low frequencies. As in Figure 7 there is an increase for most stimulation positions in the frequency range 0.3 to 1.0 kHz, again due to the ipsilateral antiresonance. At frequencies ab ...