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AUDITORY REACTION TIME AND THE DERIVATION OF EQUAL LOUDNESS CONTOURS FOR THE MONKEY 1
Author(s) -
Stebbins William C.
Publication year - 1966
Publication title -
journal of the experimental analysis of behavior
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.75
H-Index - 61
eISSN - 1938-3711
pISSN - 0022-5002
DOI - 10.1901/jeab.1966.9-135
Subject(s) - loudness , latency (audio) , acoustics , sound pressure , exponential function , audiology , tone (literature) , sound intensity , inverse , mathematics , physics , speech recognition , mathematical analysis , computer science , sound (geography) , medicine , telecommunications , geometry , art , literature
Monkeys were trained to release a telegraph key at the onset of a pure tone. Latency of the response was measured over a 70‐db range of sound pressure (re 0.0002 dyn/cm 2 ) at six frequencies (250 to 15,000 cps). Latency was found to be an inverse exponential function of intensity at all frequencies. Equal loudness was inferred from the equal latency contours which were constructed from the latency‐intensity functions at each frequency. These data indicate peak auditory sensitivity for the monkey near 1000 cps. At the frequencies above and below 1000 cps consistently more sound energy was required for equal latency.