Two of the primary cues used to localize sources sounds are interaural level differences (ILDs) and time (ITDs). We conducted two experiments explore how practice affects human discrimination values ILDs ongoing ITDs presented over headphones. measured thresholds 13 32 naive listeners in a variety conditions during pretest again, 2 weeks later, posttest. Between those tests, we trained subset 1 h per day for 9 days on single ILD or ITD condition. Listeners improved both discrimination....

Objectives: Self-assessment of perceived communication difficulty has been used in clinical and research practices for decades. Such questionnaires routinely assess the ability an individual to understand speech, particularly background noise. Despite emphasis on performance noise, speech recognition routine audiologic practice is measured by word quiet (WRQ). Moreover, surprisingly little data exist that compare understanding noise (SIN) abilities difficulty. Here, we address these issues...

Objectives: Understanding speech in noise (SIN) is the dominant complaint of individuals with hearing loss. For decades, default test perception routine audiologic assessment has been monosyllabic word recognition quiet (WRQ), which does not directly address patient concerns, leading some to advocate that measures SIN should be integrated into practice. However, very little known regard how abilities are affected by different types Here, we examine performance on clinical WRQ and a large...

Perceptual skills can be improved even in adulthood, but this learning seldom occurs by stimulus exposure alone. Instead, it requires considerable practice performing a perceptual task with relevant stimuli. It is thought that performance permits the stimuli to drive learning. A corresponding assumption same do not contribute improvement when encountered separately from because of absence permissive signal. However, these ideas are based on only two types studies, which was either always...

Conclusion: The human frequency-to-place map may be modified by experience, even in adult listeners. However, such plasticity has limitations. Knowledge of the extent and limitations auditory can help optimize parameter settings users prostheses. Objectives: To what adults adapt to sharply different maps across ears? This question was investigated two bilateral cochlear implant who had a full electrode insertion one ear, much shallower other standard frequency-to-electrode both ears....

Objective: To assess word recognition and pitch-scaling abilities of cochlear implant users first implanted with a Nucleus 10-mm Hybrid electrode array then reimplanted full length Freedom after loss residual hearing. Background: Although electroacoustic stimulation is promising treatment for patients low-frequency hearing,a small subset them lose that It not clear whether these would be better served by leaving in the providing electric through it, or replacing it standard full-length...

In Brief Objective: To determine whether bilateral loudness balancing during mapping of cochlear implants (CIs) produces fused, punctate, and centered auditory images that facilitate lateralization with stimulation on single-electrode pairs. Design: Adopting procedures similar to those are practiced clinically, direct was used obtain most-comfortable levels (C levels) in recipients CIs. Three pairs electrodes, located the base, middle, apex electrode array, were tested. These...

For decades, monosyllabic word-recognition in quiet (WRQ) has been the default test of speech recognition routine audiologic assessment. The continued use WRQ scores is noteworthy part because difficulties understanding noise (SIN) perhaps most common complaint individuals with hearing loss. easiest way to integrate SIN measures into clinical practice would be for replace assessment as primary perception. To facilitate this goal, we predicted classifications from QuickSIN signal ratio (SNR)...

Objective: The objective of this study is to build upon previous work validating a tablet-based software measure cochlear duct length (CDL). Here, we do so by greatly expanding the number cochleae (n = 166) analyzed, and examined whether computed tomography (CT) slice thickness influences reliability CDL measurements. Study Design: Retrospective chart review study. Setting: Tertiary referral center. Patients: Eighty-three adult implant recipients were included in Both measured for each...

Noise that is amplitude modulated at rates ranging from 40 to 850 Hz can elicit a sensation of pitch. Here, the processing this temporally based pitch was investigated using perceptual-learning paradigm. Nine listeners were trained (1 hour per day for 6–8 days) discriminate standard rate sinusoidal modulation (SAM) faster in single condition (150 SAM rate, 5 kHz low-pass carrier). All improved significantly on condition. These subsequently showed no more improvement than nine untrained...

Normal perception depends, in part, on accurate judgments of the temporal relationships between sensory events. Two such relative-timing skills are ability to detect stimulus asynchrony and discriminate order. Here we investigated neural processes contributing performance auditory order tasks humans, using a perceptual-learning paradigm. In each two parallel experiments, tested listeners pretest posttest consisting conditions. Between these tests, trained subset ∼1 h/d for 6–8 d single...

Fluctuations in sound amplitude provide important cues to the identity of many sounds including speech. Of interest here was whether ability detect these fluctuations can be improved with practice, and if so this learning generalizes untrained cases. To address issues, normal-hearing adults (n = 9) were trained sinusoidal modulation (SAM; 80-Hz rate, 3-4 kHz bandpass carrier) 720 trials/day for 6-7 days tested before after training on related SAM-detection SAM-rate-discrimination conditions....

Objective To assess whether health literacy is associated with: 1) degree of hearing loss at initial presentation for audiogram and 2) aid adoption candidates. Methods We identified 1376 patients who underwent audiometric testing completed a brief questionnaire our institution. The association between was examined using linear regression, adjusted age, gender, marital status, education level, race, language, employment insurance coverage. in the subset as candidates logistic demographic...

Conclusion. Neither speech understanding nor frequency discrimination ability was better in Nucleus Contour™ users than 24 straight electrode users. Furthermore, perimodiolar placement does not result discrimination. Objectives. We addressed three questions related to placement. First, do patients implanted with the understand an otherwise identical device that has a electrode? Second, these groups have different abilities? Third, is distance of from modiolus ability? Subjects and methods....

A test is proposed to characterize the performance of speech recognition systems. The QuickSIN used by audiologists measure ability humans recognize continuous in noise. This yields signal-to-noise ratio at which individuals can correctly 50% keywords low-context sentences. It argued that a metric for automatic recognizers will ground speech-in-noise human abilities. Here, it demonstrated modern recognizers, built using millions hours unsupervised training data, anywhere from normal mildly...

ObjectivesTo determine which demographic or performance variables are associated with inconsistent use of a second implant in pediatric recipients sequential bilateral cochlear implants (CIs).MethodsA retrospective chart review was conducted on CIs. Children were divided into two age groups, 5–9 and 10–17 years age. For each group, we examined whether the (CI-2) variety variables, speech-perception scores.ResultsIn children aged years, CI-2 not significantly any variable, but related to both...

Introduction: High-resolution temporal bone computed tomography (TBCT) is considered the gold standard for diagnosing superior semicircular canal dehiscence (SCD). Ocular vestibular-evoked myogenic potentials (oVEMPs)—most commonly conducted at 500 Hz stimulation—are increasingly used to detect SCD. Previous research demonstrated that oVEMP n10 response elicited 4 kHz can have near-perfect sensitivity and specificity in detecting radiographic With a larger cohort, we seek determine whether...

Abstract Objective This study aimed to assess the prevalence of cochlear nerve deficiency (CND) in a cohort pediatric patients with single‐sided deafness (SSD). A secondary objective was investigate trends intervention and hearing device use these children. Study Design Case series chart review. Setting Pediatric tertiary care center. Methods Children ages 0 21 years SSD (N = 190) who underwent computerized tomography (CT) and/or magnetic resonance imaging (MRI) were included. Diagnostic...

Measures of speech-in-noise, such as the QuickSIN, are increasingly common tests speech perception in audiologic practice. However, effect vestibular schwannoma (VS) on speech-in-noise abilities is unclear. Here, we compare predictive ability interaural QuickSIN asymmetry for detecting VS against other measures asymmetry.A retrospective review patients our institution who received testing addition to a regular battery between September 2015 and February 2019 was conducted. Records with...

Hypothesis: When cochlear implant (CI) users are allowed to self-select the "most intelligible" frequency-to-electrode table, some of them choose one that differs from default frequency table is normally used in clinical practice. Background: CIs reproduce tonotopicity normal cochleas using tables assign stimulation more basal electrodes higher frequencies and apical lower sounds. Current audiologic practice uses a for most patients. However, individual differences size, neural survival,...

Perception of spectrally degraded speech is particularly difficult when the signal also distorted along frequency axis. This might be important for post-lingually deafened recipients cochlear implants (CIs), who must adapt to a where there may mismatch between frequencies an input and characteristic neurons stimulated by CI. However, lack tools that can used identify whether individual has adapted fully in frequency-to-place relationship if so, find table ameliorates any negative effects...

Acoustic models have been used in numerous studies over the past thirty years to simulate percepts elicited by auditory neural prostheses. In these acoustic models, incoming signals are processed same way as a cochlear implant speech processor. The that would be caused electrical stimulation real simulated modulating amplitude of either noise bands or sinusoids. Despite their practical usefulness never convincingly validated. This study presents tool conduct such validation using subjects...