Abstract:
:The directionality of the cat's pinna was studied by using the amplitude of the cochlear microphonic (CM) as a quantitative indicator of tympanic sound pressure level (SPL). It was found that tympanic SPL varied with the location of a free field stimulator in anechoic space. For high (tonal) frequencies, there was a circumscribed optimal area for tympanic SPL in the frontal ipsilateral sound field, in confirmation of previous findings with other techniques that the pinna has an acoustical axis. The directionality of the pinna, determined from the solid angle enclosed by the 5 dB isointensity-decrement line with respect to the optimal position, increased with frequency. For low tonal frequencies, no circumscribed optimal area in the frontal sound field could be distinguished, and tympanic SPL fell by only 10-12 dB for displacements of 90 degrees into the contralateral sound field. Excision of the pinna abolished the circumscribed optimal areas for tympanic SPL and revealed the pinna produces up to 28 dB amplification of acoustic signals delivered 'on-axis'.
journal_name
Hear Resjournal_title
Hearing researchauthors
Phillips DP,Calford MB,Pettigrew JD,Aitkin LM,Semple MNdoi
10.1016/0378-5955(82)90031-4subject
Has Abstractpub_date
1982-09-01 00:00:00pages
13-28issue
1eissn
0378-5955issn
1878-5891pii
0378-5955(82)90031-4journal_volume
8pub_type
杂志文章相关文献
HEARING RESEARCH文献大全abstract::A hyperpolarization-activated current (termed I[h]) is believed to provide a pacemaker depolarization in sinoatrial node cells and in some central and peripheral neurons. In the present study, we examined if such an inward cation current exists in primary auditory neurons using the whole-cell patch-clamp technique. A ...
journal_title:Hearing research
pub_type: 杂志文章
doi:10.1016/s0378-5955(97)00078-6
更新日期:1997-08-01 00:00:00
abstract::Echolocation offers a promising approach to improve the quality of life of people with blindness although little is known about the factors influencing object localisation using a 'searching' strategy. In this paper, we describe a series of experiments using sighted and blind human listeners and a 'virtual auditory sp...
journal_title:Hearing research
pub_type: 杂志文章
doi:10.1016/j.heares.2013.03.005
更新日期:2013-06-01 00:00:00
abstract::The field L complex is thought to be the highest auditory centre and the input in the song vocal nuclei. Different anatomical and functional subdivisions have been described in field L. Auditory neurons of field L are well activated by natural sounds and especially by species-specific sounds. A complex sound coding ap...
journal_title:Hearing research
pub_type: 杂志文章
doi:10.1016/j.heares.2005.01.008
更新日期:2005-09-01 00:00:00
abstract::Stress can be a significant factor influencing ear pathologies and is often reported to trigger the symptoms of Meniere's disease. Both physiological and psychological stress provokes the release of prolactin from the pituitary thus allowing the classification of prolactin as a major stress hormone. We investigated th...
journal_title:Hearing research
pub_type: 杂志文章
doi:10.1016/j.heares.2004.11.015
更新日期:2005-05-01 00:00:00
abstract::The density of cochlear inner hair cells in Wistar rats is greatest on a short section of the basilar membrane about a fifth of its length from the base. This place corresponds to the frequency region of 30--40 kHz which is supposed to be the region of best hearing. ...
journal_title:Hearing research
pub_type: 杂志文章
doi:10.1016/0378-5955(80)90010-6
更新日期:1980-07-01 00:00:00
abstract::It is generally believed that all bone surfaces are covered by a nearly continuous layer of cells known as bone lining cells (BLC) which separate the general extracellular fluid (GECF) from bone and its fluid compartment. Within the cochlea of some mammals regions of bone matrix are exposed to extracellular fluid. Wit...
journal_title:Hearing research
pub_type: 杂志文章
doi:10.1016/0378-5955(94)90074-4
更新日期:1994-05-01 00:00:00
abstract::Electrically evoked auditory brainstem response (EABR) recordings were made from 38 humans implanted with one of three cochlear prostheses, and from 25 cats. Recognizable auditory potentials were identified in 27 of the profoundly deaf implanted subjects. In both cats and humans EABR waveform morphology and magnitude ...
journal_title:Hearing research
pub_type: 杂志文章
doi:10.1016/0378-5955(86)90033-x
更新日期:1986-01-01 00:00:00
abstract::Laser scanning confocal microscopy was used to determine the distribution of actin, spectrin and tubulin in whole mounts of the organ of Corti of guinea pig, monkey, rat and chinchilla. Actin, spectrin and tubulin were localized in all cell types in the auditory epithelium. No specialized cytoskeletal organization of ...
journal_title:Hearing research
pub_type: 杂志文章
doi:10.1016/0378-5955(94)90098-1
更新日期:1994-06-01 00:00:00
abstract::We investigated the effects of intracochlear electrical stimulation (ICES) on auditory pathways of neonatal rat deafened by daily amikacin injections. Expression of mRNAs encoding ionotropic glutamate receptor subunits such as alpha-amino-3-hydroxy-5-methyl-4-isoxazole (AMPA) and N-methyl-D-aspartate (NMDA), and gamma...
journal_title:Hearing research
pub_type: 杂志文章
doi:10.1016/s0378-5955(00)00167-2
更新日期:2000-12-01 00:00:00
abstract::Six utricular hair bundles from a red-eared turtle are modeled using 3-D finite element analysis. The mechanical model includes shear deformable stereocilia, realignment of all forces during force load increments, and tip and lateral link inter-stereocilia connections. Results show that there are two distinct bundle t...
journal_title:Hearing research
pub_type: 杂志文章
doi:10.1016/j.heares.2004.06.006
更新日期:2004-11-01 00:00:00
abstract::The auditory system consists of an intricate set of connections interposed between hierarchically arranged nuclei. The ascending pathways carrying sound information from the cochlea to the auditory cortex are, predictably, altered in instances of hearing loss resulting from blockage or damage to peripheral auditory st...
journal_title:Hearing research
pub_type: 杂志文章,评审
doi:10.1016/j.heares.2016.05.018
更新日期:2017-01-01 00:00:00
abstract::Two different radioligands were used to identify extracellular ATP binding sites specific to P2 purinoceptors in guinea-pig cochlear tissue. Deoxyadenosine 5'-(alpha-[35S]thio)triphosphate ([35S]dATP alpha S; 10 nM) provided a high activity probe for the P2y purinoceptor subtype on the basis of selective block by 2-me...
journal_title:Hearing research
pub_type: 杂志文章
doi:10.1016/0378-5955(95)00024-x
更新日期:1995-04-01 00:00:00
abstract::We examined calcitonin-gene related peptide (CGRP)-like immunoreactivity in the guinea pig organ of Corti at both the light and electron microscope level using immunofluorescence and immunoperoxidase techniques. We observed strong CGRP-like immunoreactivity in the inner spiral bundle and tunnel spiral bundle in all tu...
journal_title:Hearing research
pub_type: 杂志文章
doi:10.1016/0378-5955(89)90119-6
更新日期:1989-10-01 00:00:00
abstract::DNA methylation and histone modifications such as methylation, acetylation, and phosphorylation, are two types of epigenetic modifications that alter gene expression. These additions to DNA regulatory elements or to the tails of histones can be inherited or can also occur de novo. Since epigenetic modifications can ha...
journal_title:Hearing research
pub_type: 杂志文章,评审
doi:10.1016/j.heares.2019.01.007
更新日期:2019-05-01 00:00:00
abstract::In order to investigate the localization and the type(s) of excitatory amino acid receptors in the frog vestibular system, the exogenous amino acid agonists Quisqualic acid, Kainic acid and N-methyl-D-aspartic acid were tested on the sensory organ of semicircular canals. Intracellular recordings of the resting dischar...
journal_title:Hearing research
pub_type: 杂志文章
doi:10.1016/0378-5955(90)90006-b
更新日期:1990-07-01 00:00:00
abstract::Bushy cells of the ventral cochlear nucleus produce a single, short latency action potential at the beginning of long depolarisations. In the present work an immunochemical survey was performed to detect the presence of K+ channel subunits which may contribute to the specific membrane properties of the bushy cells. Th...
journal_title:Hearing research
pub_type: 杂志文章
doi:10.1016/j.heares.2004.07.020
更新日期:2005-01-01 00:00:00
abstract::Kanamycin ototoxicity, combined with behavioral audiometry to evaluate threshold shifts, was used to destroy outer hair cells (OHCs) in the basal cochlea of the chincilla while leaving the inner hair cell (IHC) population largely intact. After survival times of four weeks to one year, transmission electron microscopy ...
journal_title:Hearing research
pub_type: 杂志文章
doi:10.1016/0378-5955(80)90027-1
更新日期:1980-12-01 00:00:00
abstract::This paper discusses how ion transport proteins in the hair cells of the mammalian cochlea work to produce a sensitive but stable hearing organ. The transport proteins in the inner and outer hair cells are summarized (including their current voltage characteristics), and the roles of these proteins in determining intr...
journal_title:Hearing research
pub_type: 杂志文章,评审
doi:10.1016/j.heares.2011.04.006
更新日期:2011-10-01 00:00:00
abstract::A simplified network model of the organ of Corti is analyzed with the assumption of parametric excitation via resistance changes in the hair cells' apical membrane. Pertinent network variables (intracellular resting and receptor potentials, cellular input resistance, extracellular potentials) depend on the ratios of b...
journal_title:Hearing research
pub_type: 杂志文章
doi:10.1016/0378-5955(83)90120-x
更新日期:1983-10-01 00:00:00
abstract::The waveforms of the auditory evoked magnetic field in normal-hearing individuals and patients suffering from tinnitus are distinctly different. In tinnitus patients, the magnetic wave M200 (corresponding to the electric wave P200, or P2) is delayed and only poorly developed or even completely missing, while the ampli...
journal_title:Hearing research
pub_type: 杂志文章
doi:10.1016/0378-5955(89)90028-2
更新日期:1989-02-01 00:00:00
abstract::Validity of the neurophysiological model of tinnitus (Jastreboff, 1990), outlined in this paper, was tested on data from multicenter trial of tinnitus masking (Hazell et al., 1985). Minimal masking level, intensity match of tinnitus, and the threshold of hearing have been evaluated on a total of 382 patients before an...
journal_title:Hearing research
pub_type: 临床试验,杂志文章,多中心研究
doi:10.1016/0378-5955(94)90113-9
更新日期:1994-11-01 00:00:00
abstract::In response to low-intensity, low-frequency, phase-locked tonal stimuli with non-alternating polarity, the time-average round window (RW) response of the gerbil is a mixture of the auditory nerve neurophonic (ANN) and cochlear microphonic (CM), with the former often being of equal or greater magnitude than the latter....
journal_title:Hearing research
pub_type: 杂志文章
doi:10.1016/s0378-5955(96)00195-5
更新日期:1997-02-01 00:00:00
abstract::The role of the endolymphatic sac (ES) in endolymph volume homeostasis is speculative. The present study investigates changes of the ES's epithelia and luminal filling after induction of an acute endolymphatic hydrops. After microinjection of 1.1 mul artificial endolymph into scala media of the cochlea, guinea pigs we...
journal_title:Hearing research
pub_type: 杂志文章
doi:10.1016/j.heares.2004.10.010
更新日期:2005-04-01 00:00:00
abstract::In mammals, the cochlear sensory epithelium becomes quiescent early during development. After the first postnatal week, there is no cell replacement or proliferation, and severe damage leads to permanent deafness. Supporting cells' trans-differentiation has been suggested as a way to regenerate cochlear hair cells aft...
journal_title:Hearing research
pub_type: 杂志文章
doi:10.1016/j.heares.2018.12.002
更新日期:2019-03-01 00:00:00
abstract::Older adults are often reported in the literature to have greater difficulty than younger adults understanding speech in noise [Helfer and Wilber (1988). J. Acoust. Soc. Am, 859-893]. The poorer performance of older adults has been attributed to a general deterioration of cognitive processing, deterioration of cochlea...
journal_title:Hearing research
pub_type: 杂志文章
doi:10.1016/j.heares.2014.09.001
更新日期:2014-11-01 00:00:00
abstract::With the aim of characterizing the loss of high frequency hearing sensitivity in children, hearing thresholds and otoacoustic emissions were measured in a group of 126 normal hearing children and adolescents aged from 6 to 25 years. The subjects were divided into four 5-year age groups. Hearing thresholds over a range...
journal_title:Hearing research
pub_type: 杂志文章
doi:10.1016/j.heares.2005.11.003
更新日期:2006-02-01 00:00:00
abstract::In this paper we reconsider the designation of fishes as being either "hearing specialists" or "hearing generalists," and recommend dropping the terms. We argue that this classification is only vaguely and variously defined in the literature, and that these terms often have unclear and different meaning to different i...
journal_title:Hearing research
pub_type: 杂志文章
doi:10.1016/j.heares.2009.12.023
更新日期:2011-03-01 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::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::Otoacoustic emissions in both ears of a rhesus monkey exhibiting stable spontaneous emissions (SOEs) were monitored over a 1-year period. The amplitudes and frequencies of both SOEs and stimulus-frequency emissions (SFEs) were routinely recorded, while transiently evoked (EOE) and distortion-product emissions (DPEs), ...
journal_title:Hearing research
pub_type: 杂志文章
doi:10.1016/0378-5955(88)90020-2
更新日期:1988-04-01 00:00:00