Abstract:
OBJECTIVES:The most commonly employed speech processing strategies in cochlear implants (CIs) only extract and encode amplitude modulation (AM) in a limited number of frequency channels. proposed a novel speech processing strategy that encodes both frequency modulation (FM) and AM to improve CI performance. Using behavioral tests, they reported better speech, speaker, and tone recognition with this novel strategy than with the AM-alone strategy. Here, we used the scalp-recorded human frequency following responses (FFRs) to examine the differences in the neural representation of vocoded speech sounds with AM alone and AM + FM as the spectral and temporal cues were varied. Specifically, we were interested in determining whether the addition of FM to AM improved the neural representation of envelope periodicity (FFRENV) and temporal fine structure (FFRTFS), as reflected in the temporal pattern of the phase-locked neural activity generating the FFR. DESIGN:FFRs were recorded from 13 normal-hearing, adult listeners in response to the original unprocessed stimulus (a synthetic diphthong /au/ with a 110-Hz fundamental frequency or F0 and a 250-msec duration) and the 2-, 4-, 8- and 16-channel sine vocoded versions of /au/ with AM alone and AM + FM. Temporal waveforms, autocorrelation analyses, fast Fourier Transform, and stimulus-response spectral correlations were used to analyze both the strength and fidelity of the neural representation of envelope periodicity (F0) and TFS (formant structure). RESULTS:The periodicity strength in the FFRENV decreased more for the AM stimuli than for the relatively resilient AM + FM stimuli as the number of channels was increased. Regardless of the number of channels, a clear spectral peak of FFRENV was consistently observed at the stimulus F0 for all the AM + FM stimuli but not for the AM stimuli. Neural representation as revealed by the spectral correlation of FFRTFS was better for the AM + FM stimuli when compared to the AM stimuli. Neural representation of the time-varying formant-related harmonics as revealed by the spectral correlation was also better for the AM + FM stimuli as compared to the AM stimuli. CONCLUSIONS:These results are consistent with previously reported behavioral results and suggest that the AM + FM processing strategy elicited brainstem neural activity that better preserved periodicity, temporal fine structure, and time-varying spectral information than the AM processing strategy. The relatively more robust neural representation of AM + FM stimuli observed here likely contributes to the superior performance on speech, speaker, and tone recognition with the AM + FM processing strategy. Taken together, these results suggest that neural information preserved in the FFR may be used to evaluate signal processing strategies considered for CIs.
journal_name
Ear Hearjournal_title
Ear and hearingauthors
Suresh CH,Krishnan A,Luo Xdoi
10.1097/AUD.0000000000000756subject
Has Abstractpub_date
2020-03-01 00:00:00pages
300-311issue
2eissn
0196-0202issn
1538-4667journal_volume
41pub_type
杂志文章相关文献
EAR AND HEARING文献大全abstract:OBJECTIVES:Jervell and Lange-Nielsen syndrome (JLNS) is a rare cause of autosomal recessive inherited deafness. JLNS patients are candidates for cochlear implantation, and represent a group that needs special attention and precautions. The aim of this article is to draw some guidelines for dealing with these patients, ...
journal_title:Ear and hearing
pub_type: 杂志文章
doi:10.1097/aud.0b013e3181645393
更新日期:2008-04-01 00:00:00
abstract:OBJECTIVES:Speech intelligibility is strongly influenced by the ability to process temporal modulations. It is hypothesized that in dyslexia, deficient processing of rapidly changing auditory information underlies a deficient development of phonological representations, causing reading and spelling problems. Low-freque...
journal_title:Ear and hearing
pub_type: 杂志文章
doi:10.1097/AUD.0b013e31822c26b9
更新日期:2012-01-01 00:00:00
abstract:OBJECTIVES:Pediatric vestibular evaluations incorporate cervical and ocular vestibular evoked myogenic potential (c- and oVEMP, respectively) testing; however, in children, c- and oVEMP thresholds have been minimally investigated and frequency tuning is unknown. Children are also at risk for unsafe sound exposure secon...
journal_title:Ear and hearing
pub_type: 杂志文章
doi:10.1097/AUD.0000000000000607
更新日期:2019-01-01 00:00:00
abstract::Many people with difficulties following conversations in noisy settings have "clinically normal" audiograms, that is, tone thresholds better than 20 dB HL from 0.1 to 8 kHz. This review summarizes the possible causes of such difficulties, and examines established as well as promising new psychoacoustic and electrophys...
journal_title:Ear and hearing
pub_type: 杂志文章,评审
doi:10.1097/AUD.0000000000000388
更新日期:2017-03-01 00:00:00
abstract:OBJECTIVES:The aim of this study was to perform a cross-language comparison of two commonly used sentence-recognition materials (i.e., Hearing in Noise Test [HINT] and AzBio) in American English (AE) and Mandarin Chinese (MC). DESIGNS:Sixty normal-hearing, native English-speaking and 60 normal-hearing, native Chinese-...
journal_title:Ear and hearing
pub_type: 杂志文章
doi:10.1097/AUD.0000000000000938
更新日期:2020-08-19 00:00:00
abstract:OBJECTIVES:The aim of this study was to determine whether bone-conducted vibration (BCV) or air-conducted sound (ACS) is the optimal mode for eliciting both ocular vestibular-evoked myogenic potentials (oVEMPs) and cervical VEMPs (cVEMPs). DESIGN:Twelve healthy volunteers, five patients with unilateral chronic otitis ...
journal_title:Ear and hearing
pub_type: 杂志文章,随机对照试验
doi:10.1097/AUD.0b013e3181bdbac0
更新日期:2010-04-01 00:00:00
abstract:OBJECTIVE:Correct word recognition is generally determined by audibility, but lexical parameters also play a role. The focus of this study was to examine both the impact of audibility and lexical parameters on speech recognition of test words of the clinical German Freiburg monosyllabic speech test, and subsequently on...
journal_title:Ear and hearing
pub_type: 杂志文章
doi:10.1097/AUD.0000000000000737
更新日期:2020-01-01 00:00:00
abstract::Elderly individuals often have more deficits in speech understanding than would be expected in younger individuals with the same degree of hearing loss. Such deficits may be attributed to the complex nature of age-related changes that occur throughout the central auditory nervous system and are generally referred to a...
journal_title:Ear and hearing
pub_type: 杂志文章,评审
doi:10.1097/00003446-199112001-00007
更新日期:1991-12-01 00:00:00
abstract:OBJECTIVES:To estimate the annual cost of Ménière's disease and the cost per person in the UK population and to investigate the direct and indirect costs of the condition. DESIGN:The authors utilized a multidata approach to provide the first estimate of the cost of Ménière's. Data from the UK Biobank (a study of 500,0...
journal_title:Ear and hearing
pub_type: 杂志文章
doi:10.1097/AUD.0000000000000264
更新日期:2016-05-01 00:00:00
abstract:OBJECTIVES:Audiologists regularly use serial monitoring to evaluate changes in a patient's auditory function over time. Observed changes are compared with reference standards to determine whether further clinical action is necessary. Reference standards are established in a control sample of otherwise healthy subjects ...
journal_title:Ear and hearing
pub_type: 临床试验,杂志文章
doi:10.1097/AUD.0b013e31828a21b3
更新日期:2013-09-01 00:00:00
abstract:OBJECTIVES:Recent animal studies suggest that noise-induced synaptopathy may underlie a phenomenon that has been labeled hidden hearing loss (HHL). Noise exposure preferentially damages low spontaneous-rate auditory nerve fibers, which are involved in the processing of moderate- to high-level sounds and are more resist...
journal_title:Ear and hearing
pub_type: 杂志文章
doi:10.1097/AUD.0000000000000543
更新日期:2018-09-01 00:00:00
abstract:OBJECTIVES:The active middle ear implant Vibrant Soundbridge® was originally designed to treat mild-to-severe sensorineural hearing losses. The floating mass transducer (FMT) is crimped onto the long incus process. The procedure is termed incus vibroplasty to distinguish from other attachment sites or stimulus modi for...
journal_title:Ear and hearing
pub_type: 杂志文章
doi:10.1097/AUD.0000000000000078
更新日期:2015-01-01 00:00:00
abstract:OBJECTIVES:This systematic review aimed to investigate the prevalence and characteristics of vestibular adverse effects of aminoglycoside (AG) therapy in humans and to analyze objective vestibular tests for the detection of AG-induced vestibulotoxicity. DESIGN:PubMed, Cochrane Database, Web of Science, and reference l...
journal_title:Ear and hearing
pub_type: 杂志文章,评审
doi:10.1097/AUD.0000000000000458
更新日期:2017-11-01 00:00:00
abstract:OBJECTIVE:Research was conducted to assess multichannel saliency with the Ineraid cochlear prosthesis. The goal was to determine whether tonotopically ordered stimulation benefits speech reception. DESIGN:In a single high-performing subject, changes in speech reception were studied during two dramatic alterations to t...
journal_title:Ear and hearing
pub_type: 杂志文章
doi:10.1097/00003446-199510000-00002
更新日期:1995-10-01 00:00:00
abstract:OBJECTIVE:The purposes of this study were to (a) examine the accuracy of cochlear implant recipients who use different types of devices and signal processing strategies on pitch ranking as a function of size of interval and frequency range and (b) to examine the relations between this pitch perception measure and demog...
journal_title:Ear and hearing
pub_type: 杂志文章
doi:10.1097/AUD.0b013e3180479318
更新日期:2007-06-01 00:00:00
abstract:OBJECTIVE:Recent studies indicate that high-frequency amplification may provide little benefit for listeners with moderate-to-severe high-frequency hearing loss, and may even reduce speech recognition. Moore and colleagues have proposed a direct link between this lack of benefit and the presence of regions of nonfuncti...
journal_title:Ear and hearing
pub_type: 杂志文章
doi:10.1097/01.AUD.0000058148.27540.D9
更新日期:2003-04-01 00:00:00
abstract:OBJECTIVES:The impact of social distancing on communication and psychosocial variables among individuals with hearing impairment during COVID-19 pandemic. It was our concern that patients who already found themselves socially isolated (Wie et al. 2010) as a result of their hearing loss would be perhaps more susceptible...
journal_title:Ear and hearing
pub_type: 杂志文章
doi:10.1097/AUD.0000000000000991
更新日期:2020-12-22 00:00:00
abstract::Acoustic reflex threshold and magnitude were measured for normal-hearing subjects in four experiments under conditions of: (1) tight and relaxed eyelid closure; (2) eyes open and closed in light, focusing on a spot, reading, and solving a visual maze; (3) tactile stimulation; and (4) performing a mental task. Measurem...
journal_title:Ear and hearing
pub_type: 杂志文章
doi:10.1097/00003446-198207000-00007
更新日期:1982-07-01 00:00:00
abstract::A computer-automated, threshold-tracking procedure was developed for measuring evoked response thresholds on-line. The procedure utilizes an objective detection criterion (correlation) to evaluate whether a response is absent or present. Sound intensity is adjusted according to a modified PEST (parameter estimation by...
journal_title:Ear and hearing
pub_type: 杂志文章
doi:
更新日期:1987-06-01 00:00:00
abstract:OBJECTIVES:This study aimed to characterize horizontal plane sound localization in interfering noise at different signal-to-noise ratios (SNRs) and to compare performance across normal-hearing listeners and users of unilateral and bilateral cochlear implants (CIs). CI users report difficulties with listening in noisy e...
journal_title:Ear and hearing
pub_type: 杂志文章
doi:10.1097/AUD.0b013e318257607b
更新日期:2012-07-01 00:00:00
abstract::Because some unilaterally hearing-impaired children appear to experience difficulty in communication and educational progress, it seems only appropriate to reassess the identification and management strategies that are used with these children. Accordingly, this paper presents some general information on identificatio...
journal_title:Ear and hearing
pub_type: 杂志文章
doi:10.1097/00003446-198602000-00008
更新日期:1986-02-01 00:00:00
abstract::The purpose of this study was to determine the repeatability of high-frequency, bone conduction thresholds and to increase the data base concerning high-frequency, bone conduction threshold levels. Bone conduction thresholds were obtained on 30 subjects having normal, low, and mid frequency (0.25 to 8 kHz) hearing thr...
journal_title:Ear and hearing
pub_type: 杂志文章,评审
doi:10.1097/00003446-198712000-00010
更新日期:1987-12-01 00:00:00
abstract:OBJECTIVES:To assess discrimination of lexical stress pattern in infants with cochlear implant (CI) compared with infants with normal hearing (NH). While criteria for cochlear implantation have expanded to infants as young as 6 months, little is known regarding infants' processing of suprasegmental-prosodic cues which ...
journal_title:Ear and hearing
pub_type: 杂志文章
doi:10.1097/AUD.0000000000000243
更新日期:2016-03-01 00:00:00
abstract:OBJECTIVES:(1) To determine the ototoxicity detection rate (sensitivity) for distortion-product otoacoustic emissions (DPOAEs) testing in adults who received ototoxic medications and experienced pure-tone threshold changes during the course of treatment; (2) to determine the extent to which DPOAE sensitivity to ototoxi...
journal_title:Ear and hearing
pub_type: 临床试验,杂志文章
doi:10.1097/AUD.0b013e318181ad99
更新日期:2008-12-01 00:00:00
abstract:OBJECTIVE:With broadening candidacy criteria for cochlear implantation, a greater number of pediatric candidates have usable residual hearing in their nonimplanted ears. This population potentially stands to benefit from continued use of conventional amplification in their nonimplanted ears. The purposes of this invest...
journal_title:Ear and hearing
pub_type: 杂志文章
doi:10.1097/00003446-200508001-00010
更新日期:2005-08-01 00:00:00
abstract:OBJECTIVES:Using a longitudinal design, the present study sought to substantiate indications from two previous cross-sectional studies that hearing aid (HA) experience leads to improved speech processing abilities as quantified using eye-gaze measurements. Another aim was to explore potential concomitant changes in eve...
journal_title:Ear and hearing
pub_type: 杂志文章
doi:10.1097/AUD.0000000000000476
更新日期:2018-01-01 00:00:00
abstract::No outcome measure has universal validity and applicability. When designing, promulgating or selecting a particular instrument, audiologists should take care to consider and specify the detailed purposes to which the measure will be directed, and the particular populations to which it will be applied. Scales that have...
journal_title:Ear and hearing
pub_type: 杂志文章
doi:10.1097/00003446-200008001-00013
更新日期:2000-08-01 00:00:00
abstract::The failure to include only relevant observations in the assessment of laterality has resulted in a proliferation of post hoc attempts to "correct" laterality measures influenced by "overall performance level." The inclusion of information from trials in which both ears were either correct or in error contaminates the...
journal_title:Ear and hearing
pub_type: 杂志文章
doi:10.1097/00003446-198405000-00010
更新日期:1984-05-01 00:00:00
abstract:OBJECTIVE:The purpose of this research was to measure the effects of reference interaural time and intensity differences on binaural performance in listeners with normal hearing and impaired hearing for a number of different binaural tests. Experiment 1 measures the dependence of binaural detection and discrimination p...
journal_title:Ear and hearing
pub_type: 杂志文章
doi:10.1097/00003446-199508000-00001
更新日期:1995-08-01 00:00:00
abstract:OBJECTIVE:The aim of this study was to review the literature regarding human noise-induced permanent threshold shift and to determine whether the observed data agreed with the predictions of two different exchange rates (ERs). DESIGN:An initial list of possibly relevant studies included those cited by authors who endo...
journal_title:Ear and hearing
pub_type: 杂志文章,评审
doi:10.1097/AUD.0b013e3182a143ec
更新日期:2014-01-01 00:00:00