Under the worst of conditions and circumstances, you might get constructive interference, which would make the machine think was more sound coming out than there was, or cancellation, where the machine would keep cranking out more and more stimulus intensity to calibrate, not realizing that the real OAE was being cancelled, and the stimulus intensity was being cancelled out by interference. Always calibrate. Make sure that your intensity levels are consistent throughout the test, and if they are
For a patient with suspected Meniere’s disease or a patient with a low-frequency loss in the audiogram, use low-frequency OAEs. Maybe that is a sign of auditory neuropathy spectrum disorder (ANSD). If there are normal OAEs in a patient with a low-frequency sensorineural loss, this immediately tells you that this is not an outer hair cell problem. It may very well be neural. JCIH protocol for evaluation for hearing loss in infants from birth to six months.
The one I hate the most is that most or many PAs would have preferred to go to medical school if they had had the chance. Even my cardiologist dad, who is extremely supportive of me, is still a little baffled by my choice.I AM A STRONG BELIEVER THAT MOST PEOPLE WHO ARE UNHAPPY WITH THEIR CAREERS (NOT THEIR JOBS) ARE UNHAPPY BECAUSE THEY DON’T PUT ENOUGH OF INTO IT, AS IN “YOU GET OUT OF IT WHAT YOU PUT INTO IT.”
Moore, C, & Ruark, J (1996). Does Speech Emerge from Earlier Appearing Oral Motor Behavior? Journal of Speech and Hearing Research, 39, 1034-1047.