DOI: 10.1121/1.1982456
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Pure-Tone and Speech-Evoked Responses in Normal and Noise-Exposed Squirrel Monkeys

Abstract: Monkeys were implanted with permanent recording electrodes having tips placed in the auditory nerve-cochlear nucleus region. AP input-output relationships and VDLs were obtained from computer-averaged evoked responses to pure-tone pulses and selected monosyllabic words before and after five consecutive daily 15-min exposures to 115 dB SPL of steady broad-band noise. Threshold shifts and sustained reduction in AP amplitudes occurred at higher frequencies. Response patterns evoked by speech appeared coded in the… Show more

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