Showing papers in "Hearing Research in 1979"

TL;DR: A procedure for the schematic and automatic extraction of 'fundamental pitch' from complex tonal signals, such as voiced speech and music, has been developed and its applicability to the research and engineering of auditory communication is illustrated by some examples.

TL;DR: A two-formant synthetic vowel with closely spaced formants (F1 and F2 being fixed) can be made perceptually similar to a single- formant stimulus with F ★ = (F 1 + F 2 ) 2 by adjusting the amplitude ratio of the formants.

TL;DR: The phenomenon of two-tone suppression that is known to occur at the level of the auditory nerve is shown to also occur in the receptor potential of single presumed inner hair cells in the first turn of the guinea pig cochlea as mentioned in this paper.

TL;DR: Results indicate that the subtectorial space is morphologically separated from the scala media proper by the marginal zone, which is not influenced by changes in fluid osmolarity.

TL;DR: The collection of compound action potential (AP) threshold curves and their use to define the sensitivity of individual animals are described and relationships among single fiber, AP and psychophysical thresholds, tuning curves and suppression areas are discussed.

TL;DR: Over 2500 extracellular single unit recordings were obtained from the medial geniculate body (MGB) of cats anaesthetized with nitrous oxide, finding phase-locked neurons, principally found in the pars lateralls, but also in the Pars magnocellularis and pars ovoidea of the MGB.

TL;DR: Gross cochlear action potential tuning curves were recorded in kittens and rat pups to evaluate the development of cochLear frequency selectivity and the appearance of adult-like sharp tuning curves coincided with the last histological stages of receptor development at the outer hair cell level.

TL;DR: Pitch strength of the following equally loud sounds was scaled by magnitude estimation procedures, and implications concerning pitch mechanisms would seem to suggest a prevalence of the 'place principle' in comparison to the 'time principle'.

TL;DR: Results indicate that ionic permeability changes of the endolymph-perilymph barrier are a significant factor in the physiological mechanisms underlying noise-induced hearing loss.

TL;DR: It was found that the initial exposure to noise at 115 dBA produced considerable suppression of the CM and AP, while the endocochlear potential and endolymph potassium concentration [Kendo+] were elevated above their normal values.

TL;DR: In this paper, the authors measured the latency of the auditory nerve action potential (AP) and single auditory nerve fibers using click stimuli and found that the fiber latencies were shorter for the noise-treated group than for normal animals.

TL;DR: There are similar mechanisms which contribute to the frequency selectivity measured by these two procedures and that these mechanisms operate in both the human and avian ear.

TL;DR: Results suggest that the model of loudness summation is applicable to observers with noise-induced hearing loss when the presence of recruitment and reduced frequency selectivity is taken into account.

TL;DR: The results lead to the conclusion that quadratic and cubic difference tones are produced in different nonlinearities although both result in the same kind of adequate stimulus.

TL;DR: A relationship between the ototoxicity of kanamycin and the onset of the auditory function is suggested: cochlear potentials were mostly affected when the intoxication was performed during the last 15 days of gestation.

TL;DR: In this article, the authors investigated two-dimensional aspects of wave motion in the second region for a simple cochlear model, where the partition impedance is approximated by a linear function of the location χ and the integral equation for 2D fluid motion is solved analytically.

TL;DR: Several structures associated with the auditory pathway have been examined by radioimmunoassay for their content of somatostatin and the medial geniculate body had the highest content, followed by the cochlear nucleus, inferior colliculus, auditory cortex and cochlea.

TL;DR: 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.

TL;DR: The funneling mechanism in hearing is reviewed and its underlying mechanism clearly elucidated in this paper, where it is concluded that GABA is a principal candidate among the putative transmitters, and it is further concluded that it is a more efficient mechanism than the one proposed in this paper.

TL;DR: The Mössbauer technique was used to measure displacements of the stapes footplate and adjacent temporal bone during bone conduction stimulation at frequencies from 250 to 400 Hz in anaesthetized guinea pigs, providing quantitative estimates of the magnitude of inertial effects.