Journal ArticleDOI
Transient response of the basilar membrane measured in squirrel monkeys using the Mössbauer effect
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Measurements of the transient response of the basilar membrane were conducted using the Mossbauer effect on 33 squirrel monkeys using an experimental preparation identical to that of Rhode ( 1971), showing consistency with nonlinearity reported using steady‐state measurement methods.Abstract:
Measurements of the transient response of the basilar membrane were conducted using the Mossbauer effect on 33 squirrel monkeys using an experimental preparation identical to that of Rhode (1971). The stimuli were acoustic clicks 150 μsec in duration repeated 100 000–400 000 times. The amplitude of the click was varied and the responses of the malleus and of the basilar membrane at a point in the basal turn were measured. The basilar membrane’s click response is oscillatory, with a period near that of the characteristic frequency. The first few response peaks behave almost linearly with stimulus intensity, while the later peaks exhibit a pronounced nonlinearity. This behavior is shown to be consistent with the nonlinearity reported using steady‐state measurement methods (Rhode, 1971). The transient response observed in some of the preparations was very lightly damped; however, a wide range in the damping of the responses was found in the different animals. A progressive increase in the rate of decay of th...read more
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Similarity of Traveling-Wave Delays in the Hearing Organs of Humans and Other Tetrapods
TL;DR: The estimated in vivo basilar-membrane delays in humans are similar to delays in the hearing organs of other tetrapods, including those in which basilar membranes do not sustain traveling waves or that lack basilar membrane vibrations altogether.
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Auditory cortical onset responses revisited: I. First-spike timing
TL;DR: The timing of spikes of single neurons in the primary auditory cortex of barbiturate-anesthetized cats to the onsets of tone bursts is analyzed to suggest a peripheral origin of S and a peripheral establishment of latency-acceleration/rate of change of peak pressure functions.
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Energy flow in the cochlea
TL;DR: In this article, the authors used energy-flow considerations to identify which features in a mathematical model of cochlear mechanics are necessary if it is to reproduce these experimental findings, and found that models incorporating a wavenumber-dependent membrane stiffness must be abandoned because they fail to give critical-layer absorption; this is why their predictions (when realistically light damping is used) have been unsuccessful.
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Input impedance of the cochlea in cat
TL;DR: In this article, sound pressure at the input to the cochlea at behavioral threshold is constant between 1 and 8 kHz, but increases as frequency is decreased below 1 kHz.
Journal ArticleDOI
Modeling auditory-nerve responses for high sound pressure levels in the normal and impaired auditory periphery
TL;DR: A computational model to simulate normal and impaired auditory-nerve (AN) fiber responses in cats is presented, achieved by providing two modes of basilar membrane excitation to the inner hair cell (IHC) rather than one.