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Title: The influence of middle-ear muscle contraction on auditory threshold for selected pure tones. Author: Morgan DE, Dirks DD, Kamm C. Journal: J Acoust Soc Am; 1978 Jun; 63(6):1896-903. PubMed ID: 681622. Abstract: The influence of middle-ear muscle (MEM) contraction on auditory threshold has been measured for pure tones of 0.25, 0.5, and 1.5 kHz. The reflex-activating signal was a 3-kHz pure tone. Signal paradigms were chosen to reduce or eliminate the effects of binaural loudness summation, contralateral direct masking, and contralateral remote and backward masking effects, and to maximize the influence of MEM contraction. Results indicate that under no condition was behavioral threshold affected by the MEM contraction induced using a pure-tone stimulus of 3 kHz, 105 dB SPL.[Abstract] [Full Text] [Related] [New Search]