Abstract:
:The effects of eliminating the olivocochlear bundle (OCB) on cochlear electromechanical properties were examined by measuring cochlear microphonics (CM) and distortion product otoacoustic emissions (DPOAEs) in chronically de-efferented chinchillas. The OCB fibers to the right ears were successfully sectioned in six out of 15 adult chinchillas via a posterior paraflocular fossa approach. At the end of the experiment, these ears were histologically verified as being deprived of both lateral and medial OCB fibers. The opposite (left) ears from the animals served as controls. Following de-efferentation, changes of the inter-modulation distortion components (2f(1)-f(2), f(2)-f(1), 3f(1)-2f(2), 3f(2)-2f(1)) varied, depending on the frequencies and levels of the stimuli. DPOAE amplitudes to low-level stimuli were within the 95% confidence intervals around mean DPOAE amplitudes of the control ears at all the frequencies (1-8 kHz). At high stimulus levels, DPOAE amplitudes increased by 5-20 dB at 1 and 2 kHz while remaining in the normal range at 4 and 8 kHz. In contrast, the CM input/output functions to stimuli from 1 to 8 kHz were significantly reduced by approximately 40-50% at all input levels. The results suggest that the OCB may play a role in modulating electrical properties of the outer hair cells and in reducing the magnitude of cochlear distortion to high-level stimuli.
journal_name
Hear Resjournal_title
Hearing researchauthors
Zheng XY,McFadden SL,Henderson D,Ding DL,Burkard Rdoi
10.1016/s0378-5955(99)00217-8keywords:
subject
Has Abstractpub_date
2000-05-01 00:00:00pages
14-22issue
1-2eissn
0378-5955issn
1878-5891pii
S0378-5955(99)00217-8journal_volume
143pub_type
杂志文章相关文献
HEARING RESEARCH文献大全abstract::One of the factors which can affect the amount of temporary threshold shift (TTS) due to acoustic overstimulation is known to be the general metabolic state of the exposed subject. The present study was conducted to elucidate how preexisting intense emotional stress in awake guinea pigs could influence the TTS induced...
journal_title:Hearing research
pub_type: 杂志文章
doi:10.1016/0378-5955(92)90013-d
更新日期:1992-02-01 00:00:00
abstract::The distribution of S-100-like immunoreactivity in mouse and hamster auditory and vestibular end organs was determined by the use of immunohistochemistry. Within the organ of Corti, the cytoplasm of cells of Deiter and Hensen were strongly immunoreactive. Inner hair cells and the peripheral processes and cell bodies o...
journal_title:Hearing research
pub_type: 杂志文章
doi:10.1016/0378-5955(94)90176-7
更新日期:1994-04-01 00:00:00
abstract::Tympanosclerosis is a condition leading to a calcification process in the middle ear, and often develops after chronic inflammation of the middle ear. Since osteopontin (OPN) has been shown to participate in the pathological calcification, we here investigated whether OPN is involved in the process of calcification in...
journal_title:Hearing research
pub_type: 杂志文章
doi:10.1016/s0378-5955(00)00260-4
更新日期:2001-03-01 00:00:00
abstract::The rather shallow growth of click-evoked otoacoustic emissions (CEOAE) with click intensity, namely <1 dB/dB, distinguishes genuine CEOAEs from stimulus artifacts, thereby providing the rationale for the popular 'derived nonlinear recording' method. However, other CEOAE nonlinearities regarding phase or envelope depe...
journal_title:Hearing research
pub_type: 杂志文章
doi:10.1016/s0378-5955(02)00745-1
更新日期:2003-01-01 00:00:00
abstract::This study used immunocytochemical markers for various classes of glial cells to investigate the relationship between glial elements and microcysts in the gerbil auditory system at the light and electron microscopic level. Monoclonal antibodies S-100, GFAP and Rip were used on tissue from 3- and 12-month old animals a...
journal_title:Hearing research
pub_type: 杂志文章
doi:10.1016/0378-5955(93)90226-q
更新日期:1993-05-01 00:00:00
abstract::Differences between inner and outer hair cells in the cellular content of precipitable calcium were detected using a potassium pyroantimonate precipitation method and the electron spectroscopic imaging (ESI-) technique. The cytoplasm of the inner hair cells was scattered with a high number of calcium precipitates in a...
journal_title:Hearing research
pub_type: 杂志文章
doi:10.1016/0378-5955(94)90213-5
更新日期:1994-01-01 00:00:00
abstract::The relation between hearing loss and loss of hair cells after prolonged exposure to a simulated industrial noise environment was determined in normotensive albino rats. Hearing loss was assessed behaviorally by a conditioned suppression technique and electrophysiologically by auditory brainstem response to pulses of ...
journal_title:Hearing research
pub_type: 杂志文章
doi:10.1016/0378-5955(87)90129-8
更新日期:1987-01-01 00:00:00
abstract::This article presents a comparison of Liouville-Green (LG) calculations and exact solutions of 2- and 3-dimensional cochlea models. The agreement is in general quite good. For certain choices of the model parameters, however, the 2- and 3-dimensional LG solutions show appreciable errors in the region just beyond the l...
journal_title:Hearing research
pub_type: 杂志文章
doi:10.1016/0378-5955(82)90071-5
更新日期:1982-10-01 00:00:00
abstract::The understanding of speech in noise relies (at least partially) on spectrotemporal modulation sensitivity. This sensitivity can be measured by spectral ripple tests, which can be administered at different presentation levels. However, it is not known how presentation level affects spectrotemporal modulation threshold...
journal_title:Hearing research
pub_type: 杂志文章
doi:10.1016/j.heares.2018.10.017
更新日期:2019-01-01 00:00:00
abstract::A three-dimensional computer simulation of the experiment (Benser M. E., Issa N.P., Hudspeth A.J., 1993. Hear. Res. 68, 243-252), devoted to the mechanical stimulation of the surface of saccular membrane of bullfrog with the otoconial mass removed was carried out by finite-element method. Comparison of the calculated ...
journal_title:Hearing research
pub_type: 杂志文章
doi:10.1016/s0378-5955(00)00034-4
更新日期:2000-05-01 00:00:00
abstract::There are three main cues to sound location: the interaural differences in time (ITD) and level (ILD) as well as the monaural spectral shape cues. These cues are generated by the spatial- and frequency-dependent filtering of propagating sound waves by the head and external ears. Although the chinchilla has been used f...
journal_title:Hearing research
pub_type: 杂志文章
doi:10.1016/j.heares.2010.10.007
更新日期:2011-02-01 00:00:00
abstract::An investigation of the effects of the level and bandwidth of the masking noise and of the effect of test-tone duration on binaural masking-level differences (BMLDs) has been carried out using the standard Békésy audiometric techniques. The BMLDs increase in magnitude with increasing masker level, reach a shallow maxi...
journal_title:Hearing research
pub_type: 杂志文章
doi:10.1016/0378-5955(84)90015-7
更新日期:1984-05-01 00:00:00
abstract::Intracellular recording of 'chopper responses' in the cochlear nucleus of the anesthetized cat presented a sustained depolarization accompanied by spikes that lasted as long as the stimulation. ...
journal_title:Hearing research
pub_type: 杂志文章
doi:10.1016/0378-5955(79)90020-0
更新日期:1979-03-01 00:00:00
abstract::Gamma-aminobutyric acid (GABA)-like immunoreactivity in the chick basilar papilla and lagenar macula was studied by using anti-serum against GABA coupled with glutaraldehyde to bovine serum albumin. GABA-like immunoreactivity was localized selectively in the cytoplasm of both tall and short hair cells in the basilar p...
journal_title:Hearing research
pub_type: 杂志文章
doi:10.1016/0378-5955(87)90178-x
更新日期:1987-01-01 00:00:00
abstract::Recent measurements of vibrational motion to assess sound transmission through ear structures and skull contents have included three-dimensional (3D) behavior. The 3D motion of a point has been described with the three orthogonal components in the 3D space. In this article, a method to represent the 3D velocity with t...
journal_title:Hearing research
pub_type: 杂志文章
doi:10.1016/j.heares.2018.03.022
更新日期:2018-07-01 00:00:00
abstract::Two-tone suppression was studied in the auditory nerve fibers of anesthetized cats, using low-frequency suppressors (50-2000 Hz). The response to the characteristic-frequency (CF) tone was suppressed in a phase-specific manner, attaining one or two minimums in 1 cycle of the suppressor (SUP) tone. The suppression phas...
journal_title:Hearing research
pub_type: 杂志文章
doi:10.1016/0378-5955(96)00034-2
更新日期:1996-07-01 00:00:00
abstract::The cochlear nucleus (CN) is the first sound processing center in the central auditory system that receives the almost unprocessed auditory information from the auditory periphery. The functional organization of the CN has been studied to a great extent in many mammals, including the cat, rat and bat. Yet, despite the...
journal_title:Hearing research
pub_type: 杂志文章
doi:10.1016/j.heares.2009.08.002
更新日期:2009-11-01 00:00:00
abstract::Gerbils exhibit a unique encephalopathy characterized by spongioform lesions in the neuropil of the cochlear nucleus and that others have recently described. The present results suggest that the course of this degenerative disorder is affected by acoustic experience. In gerbils in which acoustic stimulation was limite...
journal_title:Hearing research
pub_type: 杂志文章
doi:10.1016/0378-5955(87)90193-6
更新日期:1987-12-31 00:00:00
abstract::High doses of sodium salicylate (SS) have long been known to induce temporary hearing loss and tinnitus, effects attributed to cochlear dysfunction. However, our recent publications reviewed here show that SS can induce profound, permanent, and unexpected changes in the cochlea and central nervous system. Prolonged tr...
journal_title:Hearing research
pub_type: 杂志文章,评审
doi:10.1016/j.heares.2012.11.016
更新日期:2013-01-01 00:00:00
abstract::The distribution of actin, alpha-actinin, fimbrin, tropomyosin and tubulin in the apical region of inner and outer hair cells was studied by immunofluorescent localization of antibodies to these proteins. The macromolecular distribution of actin and alpha-actinin was studied using post-embedding immunoelectron microsc...
journal_title:Hearing research
pub_type: 杂志文章
doi:10.1016/0378-5955(85)90029-2
更新日期:1985-01-01 00:00:00
abstract::The human auditory system is comprised of specialized but interacting anatomic and functional pathways encoding object, spatial, and temporal information. We review how learning-induced plasticity manifests along these pathways and to what extent there are common mechanisms subserving such plasticity. A first series o...
journal_title:Hearing research
pub_type: 杂志文章,评审
doi:10.1016/j.heares.2010.03.086
更新日期:2011-01-01 00:00:00
abstract::In this study, which aims to investigate for the first time auditoty sensitivity in congenital central hypothyroidism (CH), we concluded that: (1) permanent sensorineural hearing loss may be observed not only in congenital primary disorders of thyroid function, as reported hitherto; (2) it may also be found in patient...
journal_title:Hearing research
pub_type: 杂志文章
doi:10.1016/s0378-5955(02)00515-4
更新日期:2002-10-01 00:00:00
abstract::Electrical stimulation of the cochlea is known to cause auditory sensations in humans and other animals. It also has been shown to produce emissions of sound from the inner ear. In the current study we investigate the relationship between electrically induced motion of the basilar membrane (BM) and the production of o...
journal_title:Hearing research
pub_type: 杂志文章
doi:10.1016/0378-5955(95)00216-2
更新日期:1995-12-01 00:00:00
abstract::The inner ear contains receptor cells that oscillate spontaneously, generating waves that propagate backward in the cochlea, ultimately causing sound to be radiated into the ear canal--the spontaneous otoacoustic emissions (SOAEs). Except in rare conditions, these internally generated signals appear to go unheard. The...
journal_title:Hearing research
pub_type: 杂志文章
doi:10.1016/s0378-5955(02)00388-x
更新日期:2002-09-01 00:00:00
abstract::Thresholds of neurons to sounds were compared as a function of central auditory structure [ventral cochlear nucleus (VCN), dorsal cochlear nucleus (DCN), and inferior colliculus (IC)] in young and middle-aged C57BL/6J mice (multiple- and single-unit recordings) and in young and old CBA/J mice (single-unit recordings)....
journal_title:Hearing research
pub_type: 杂志文章
doi:10.1016/0378-5955(91)90215-u
更新日期:1991-05-01 00:00:00
abstract::Blind cave fish employ superficial neuromasts to detect currents [Baker, C.F. and J.C. Montgomery, J. Comp. Physiol. A 184 (1999) 519-527]. Briefly exposing fish to calcium-free water significantly reduces the ability of the fish to perform rheotaxis (i.e., to orient properly in currents). Spontaneous recovery to cont...
journal_title:Hearing research
pub_type: 杂志文章
doi:10.1016/s0378-5955(02)00705-0
更新日期:2002-12-01 00:00:00
abstract::There are multiple etiologies and phenotypes of age-related hearing loss or presbyacusis. In this review we summarize findings from animal and human studies of presbyacusis, including those that provide the theoretical framework for distinct metabolic, sensory, and neural presbyacusis phenotypes. A key finding in quie...
journal_title:Hearing research
pub_type: 杂志文章,评审
doi:10.1016/j.heares.2020.108109
更新日期:2020-10-31 00:00:00
abstract::Cochlear implant performance in difficult listening situations is limited by channel interactions. It is known that partial tripolar (PTP) stimulation reduces the spread of excitation (SOE). However, the greater the degree of current focusing, the greater the absolute current required to maintain a fixed loudness. As ...
journal_title:Hearing research
pub_type: 杂志文章
doi:10.1016/j.heares.2011.12.009
更新日期:2012-02-01 00:00:00
abstract::Psychophysical measures of the electrically stimulated human auditory system were obtained for different types of symmetric and asymmetric charge-balanced waveforms. Absolute detection thresholds of biphasic, pseudomonophasic, and 'alternating monophasic' current waveforms delivered by a bipolar intra-cochlear electro...
journal_title:Hearing research
pub_type: 杂志文章
doi:10.1016/j.heares.2004.08.006
更新日期:2005-02-01 00:00:00
abstract::Sensorineural hearing loss, which is often caused by degeneration of hair cells in the auditory epithelium, is permanent because lost hair cells are not replaced. Several conceptual approaches can be used to place new hair cells in the auditory epithelium. One possibility is to enhance proliferation of non-sensory cel...
journal_title:Hearing research
pub_type: 杂志文章
doi:10.1016/j.heares.2007.06.005
更新日期:2007-10-01 00:00:00