abstract：:The suppression tuning properties of the oto-acoustic distortion product emission, 2f1-f2 have been measured in the ear canal of gerbil and man. The results show the acoustic response to be suppressible in a similar, frequency-dependent manner in both species. Frequencies near to those of the stimulating tones are mos...

journal_title：Hearing research

authors： Brown AM,Kemp DT

更新日期：1984-01-01 00:00:00

abstract：:Excised cochleae of alligator lizards were prepared to permit microscopic observations of motion of hair-cell free-standing stereociliary bundles and of the underlying basilar papilla during acoustic stimulation, using stroboscopic illumination. In response to tones of frequency from 0.2 to 5 kHz, the papilla rocks ab...

journal_title：Hearing research

authors： Frishkopf LS,DeRosier DJ

更新日期：1983-12-01 00:00:00

abstract：:Temporary threshold shifts (TTS), of the cochlear action potential in the guinea pig, caused by a high frequency exposure tone could be reduced by a prior exposure at the same frequency but lower intensity. The TTS caused by the initial, low intensity exposure tone was allowed to recover to levels where the thresholds...

journal_title：Hearing research

authors： Rajan R,Johnstone BM

更新日期：1983-11-01 00:00:00

abstract：:The responses of single units in the ventral cochlear nucleus of acute anesthetized guinea pigs were studied with continuous sinusoidal electrical stimuli presented through a multi-electrode implant in the scala tympani. Implants had two or four electrodes along the axis of the scala with 1 mm separations. Best freque...

journal_title：Hearing research

authors： Glass I

更新日期：1983-11-01 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

authors： Dallos P

更新日期：1983-10-01 00:00:00

abstract：:A large sample of threshold tuning curves of single units from various levels of the auditory pathway was used in order to examine the relationship between best frequency and a measure of sharpness of tuning. This measure is simply the tuning curve bandwidth at 20 dB above threshold on a square-root scale of frequency...

journal_title：Hearing research

authors： Calford MB,Webster WR,Semple MM

更新日期：1983-09-01 00:00:00

abstract：:We studied the 2IFC detectability of a 500 Hz tone masked by computer-generated maskers under the N0SII interaural condition, and under two masker conditions. In the first masker condition the maskers in the two intervals of a trial were independent of each other, and in the second masker condition the maskers were id...

journal_title：Hearing research

authors： Siegel RA,Colburn HS

更新日期：1983-08-01 00:00:00

abstract：:The latency of the N1 component of tone burst evoked compound action potentials was examined in chinchilla following acute pure-tone trauma. At and below the trauma frequency (4 kHz) the N1 latency at threshold generally increased, while above the trauma frequency it decreased; tonotopically paralleling pitch shifts o...

journal_title：Hearing research

authors： Sikora MA,Morizono T

更新日期：1983-07-01 00:00:00

abstract：:Auditory brainstem responses (ABR) from ten normal (3 males, 7 females) and ten environmentally sound deprived CBA/J mice (6 males, 4 females) were elicited by 30 dB HL click stimuli delivered via specially constructed, matched insert earphones. The mice were tested at 44-49 days of age under chloral hydrate sedation ...

journal_title：Hearing research

authors： Evans WJ,Webster DB,Cullen JK Jr

更新日期：1983-06-01 00:00:00

abstract：:The spectro-temporal receptive field (STRF) of an auditory neuron represents those characteristics of the sound stimulus in both the time and frequency domain that affect the firing probability of the neuron. The STRF is determined under stationary stimulus conditions for Gaussian wide-band noise. It has been demonstr...

journal_title：Hearing research

authors： Eggermont JJ,Aertsen AM,Johannesma PI

更新日期：1983-05-01 00:00:00

abstract：:Measurements were made of inner hair cell receptor potentials and basilar membrane motion in the 17-21 kHz region of the guinea pig cochlea. The latter were made using the Mossbauer technique. Isoamplitude curves at 0.9 mV d.c. receptor potential were compared with isovelocity curves at 0.04 mm/s and the corresponding...

journal_title：Hearing research

authors： Sellick PM,Patuzzi R,Johnstone BM

更新日期：1983-04-01 00:00:00

abstract：:A model for cochlear mechanics is proposed to take account of its two systems, one passive and one active. The classical passive system stimulates the inner hair cells directly at levels above about 40 dB SL. At intensities below about 60 dB an active process, the 'cochlear amplifier' (CA), somehow provides additional...

journal_title：Hearing research

authors： Davis H

更新日期：1983-01-01 00:00:00

abstract：:Hair cells of Sprague-Dawley rats aged 2-33 months were counted in order to assess the magnitude, location and time course of cell degeneration. The mean number of hair cell places (hair cells plus phalangeal scars) was approximately 4700: 960 inner hair cell places and 3470 outer hair cell places. These numbers do no...

journal_title：Hearing research

authors： Keithley EM,Feldman ML

更新日期：1982-12-01 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

authors： de Boer E,Viergever MA

更新日期：1982-10-01 00:00:00

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 c...

journal_title：Hearing research

authors： Phillips DP,Calford MB,Pettigrew JD,Aitkin LM,Semple MN

更新日期：1982-09-01 00:00:00

abstract：:The phase angle, alpha, between a tonal signal and a tonal masker was varied from 0 degrees to 135 degrees in simultaneous masking, forward masking, and pulsation-threshold paradigms. In all conditions the frequency of the signal and masker was 500 Hz. For forward masking both diotic (MOSO) and dichotic (MOS pi) liste...

journal_title：Hearing research

authors： Yost WA,Grantham DW,Lutfi RA,Stern RM

更新日期：1982-08-01 00:00:00

abstract：:We confirm the report of Mountain (Mountain, D.C. (1980): Science 210, 77-72) that stimulating the crossed olivocochlear bundle (COCB) can change the magnitude of the distortion product (f2-f1) in the ear-canal sound pressure. Our results are extended to include (2f1-f2) as well as (f2-f1) from anesthetized chinchilla...

journal_title：Hearing research

authors： Siegel JH,Kim DO

更新日期：1982-02-01 00:00:00

abstract：:The ultrastructure of the sensory epithelia in the auditory regions of the ear, the sacculus and lagena, were investigated in the blue gourami, Trichogaster trichopterus, using transmission and scanning electron microscopy. The sensory epithelium consists of sensory hair cells surrounded by supporting cells, both of w...

journal_title：Hearing research

authors： Popper AN,Hoxter B

更新日期：1981-11-01 00:00:00

abstract：:1. The sound pressure level required to produce a detectable gross action potential (N1) in the guinea pig was measured for a range of frequencies. The resulting electrocochleogram was compared with the click level require to produce a detectable N1. 2. Over most of the auditory range (1-30 kHz) the required click lev...

journal_title：Hearing research

authors： Johnstone JR

更新日期：1981-07-01 00:00:00

abstract：:Compound action potentials (AP) were recorded under various stimulus conditions in 31 guinea pigs. Stimulus attenuation, decrease of inter-stimulus interval, increase of the level of a continuous wide-band noise maker, and lowering the animal's temperature all resulted in a drop of the AP amplitude and an increase in ...

journal_title：Hearing research

authors： Prijs VF,Eggermont JJ

更新日期：1981-03-01 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

authors： Ryan AF,Woolf NK,Bone RC

更新日期：1980-12-01 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

authors： Burda H,Voldrick L

更新日期：1980-07-01 00:00:00

abstract：:Delayed acoustic waves have been measured in the sealed ear canal in response to click and tone-burst stimuli. The response shows compressive nonlinearity, evidence for 'active' processing, and frequency tuning. At low sound levels group and phase delays correspond, and represent about 15 waves delay for the mid-frequ...

journal_title：Hearing research

authors： Wilson JP

更新日期：1980-06-01 00:00:00

abstract：:Some important relationships between two auditory nonlinearities, unmasking and combination tone (CT) production, are described. An example of unmasking is provided by using a forward-masking paradigm where a baseline is first obtained by determining the threshold of a 2000 Hz signal preceded by a 2000 Hz masker. When...

journal_title：Hearing research

authors： Tyler RS

更新日期：1980-06-01 00:00:00

abstract：:We have studied properties of a nonlinear one-dimensional model for motion of the basilar membrane. The model is able to reproduce a variety of physiological and psychophysical effects, and in some instances predictions of the model have been subssequently confirmed. We regard the agreement between model and nature as...

journal_title：Hearing research

authors： Hall JL

更新日期：1980-06-01 00:00:00

abstract：:There is convincing evidence that cochlear microphonics (CM) arise primarily from outer hair cells and have a frequency distribution that is much broader than that measured in inner hair cells by Russel and Sellick [6,7]. The broad tuning results from the fact that CM generated at each location decays exponentially al...

journal_title：Hearing research

authors： Kletsky EJ,Zwislocki JJ

更新日期：1980-06-01 00:00:00

abstract：:Certain characteristics of the extracellular cochlear microphonic (CM) recorded by intracochlear electrodes change in a bimodal manner as a function of prior acoustic exposure, intensity of stimulation, or stimulus frequency. In the present study, it is shown that biasing the basilar membrane position toward scala tym...

journal_title：Hearing research

authors： Pierson M,Møller A

更新日期：1980-03-01 00:00:00

abstract：:Guinea pigs were exposed to a 10 kHz pure tone and damage to the cochlea was investigated immediately after exposure, or after a recovery period ranging from 18-25 days. Structural damage was assessed using scanning electron microscopy and functional damage estimated using the N1 threshold audiogram. Exposure at 106 d...

journal_title：Hearing research

authors： Robertson D,Johnstone BM,McGill TJ

更新日期：1980-01-01 00:00:00

abstract：:Healthy guinea pigs were exposed to broad band noise at levels between 95 and 115 dBA for 7 days. A significant decrease of the sound-induced cochlear responses, together with a substantial increase of the endocochlear potential, was observed in guinea pigs exposed to noise at 105 or 115 dBA. Microsamples of the endol...

journal_title：Hearing research

authors： Konishi T,Salt AN,Hamrick PE

更新日期：1979-12-01 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

authors： Romand R

更新日期：1979-03-01 00:00:00

abstract：:Change in PO2 in endolymph, endocochlear potentials and cochlear microphonics have been tested in normoxia, hyperoxia and anoxia on 24 guinea pigs. The polarographic method and construction of oxygen-sensitive microelectrodes is described in detail. The normal level of PO2 in endolymph vaires between 20 and 30 mm Hg. ...

journal_title：Hearing research

authors： Prazma J,Fischer ND,Biggers WP,Ascher D

更新日期：1978-10-01 00:00:00

abstract：:Auditory thresholds were measured for 18 ears from 13 rhesus monkeys using a simple reaction-time procedure. The threshold contour was a smooth W-shaped function with rises at the extreme frequencies and around 4 kHz and was comparable in shape with previously reported thresholds for this animal. Standard deviations a...

journal_title：Hearing research

authors： Pfingst BE,Laycock J,Flammino F,Lonsbury-Martin B,Martin G

更新日期：1978-10-01 00:00:00