Sound field variability: Some measurements from the cat
FB Simmons, DL Beatty - Electroencephalography and Clinical …, 1964 - Elsevier
The intensity of an auditory stimulus actually arriving at the ear may be very different from
that estimated by routine sound field measurements using a microphone. Data are
presented which compare microphone-measured variability and cochlear microphonic (CM)
variability in the same sound field, using anesthetized cats with electrodes permanently
implanted on the round window. The variation in amplitude of CM output (stimulus level
constant) was 1 to 15 times greater, depending upon head position and frequency, than …
that estimated by routine sound field measurements using a microphone. Data are
presented which compare microphone-measured variability and cochlear microphonic (CM)
variability in the same sound field, using anesthetized cats with electrodes permanently
implanted on the round window. The variation in amplitude of CM output (stimulus level
constant) was 1 to 15 times greater, depending upon head position and frequency, than …
