Anita I. Rawnsley

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If a tone is sounded in one ear and immediately a second tone is sounded, there is a decrease in sensitivity to the second tone. A 1000 cps. tone was presented to five observers for 435 msec. followed by a silent interval of 35 msec, then a test tone of 50 msec, was presented. The first tone was given at sensation levels of 30-90 db. in 10 db. steps.(More)
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