Delayed otoacoustic emissions arrive faster for higher stimulus frequencies

Evidence

The delay time of an emission depends on its frequency. An average of available results shows a decreasing delay time for increasing emission frequency. Figure 3.20 displays this relationship, which indicates that for low frequencies near 500 Hz a delay time of about 20 ms is measured, whereas emissions with high frequency content are produced with a much shorter delay, about 4 ms at 4 kHz. It should be mentioned, however, that many emissions show a time function that is not concentrated within a narrow time window. Long lasting emissions with partly modulated time functions often occur, and some are not completely decayed even after a delay of 80 ms. — Professor Dr.-Ing. Hugo Fastl, Professor Dr.-Ing. Eberhard, Psychoacoustics- Facts and Models, 301

The delay time of an emission depends on its frequency. An average of available results shows a decreasing delay time for increasing emission frequency. Figure 3.20 displays this relationship, which indicates that for low frequencies near 500 Hz a delay time of about 20 ms is measured, whereas emissions with high frequency content are produced with a much shorter delay, about 4 ms at 4 kHz. It should be mentioned, however, that many emissions show a time function that is not concentrated within a narrow time window. Long lasting emissions with partly modulated time functions often occur, and some are not completely decayed even after a delay of 80 ms. For such long-lasting emissions, the delay time shown in Fig. 3.20 holds for the first, and usually the largest, maximum in the time function of the emission. — Professor Dr.-Ing. Hugo Fastl, Professor Dr.-Ing. Eberhard, Psychoacoustics- Facts and Models, 301

Categorization

• DEFINE: Clarifies that the delay time of an evoked emission depends on its frequency, with a quantitative rule (lower frequencies slower).
• corroborated: 2 independent passages support this claim — Professor Dr.-Ing. Hugo Fastl, Professor Dr.-Ing. Eberhard, Psychoacoustics- Facts and Models, 301