Rapid adaptation of the 2f1-f2 DPOAE in humans: binaural and contralateral stimulation effects.

The present data were collected in humans to characterize the effects of monaural and binaural stimulation and contralateral noise on the 2f1-f2 distortion-product otoacoustic emission (DPOAE) adaptation response. DPOAE levels (f2/f1=1.21, L1=70 dB SPL, L2=65 dB SPL) were measured in both ears for a range of f2 frequencies (1.

Biological basis of hearing-aid design.

We show that we can accurately model the auditory-nerve discharge patterns in response to sounds as complex as speech and ask how we may exploit this knowledge to test new strategies for hearing-aid signal processing. We describe the auditory-nerve representations of vowels in normal and noise-damaged ears. The normal representations are predicted well by a cochlear signal processing model originally developed by Carney (Carney, L.

Effects of conductive hearing loss on auditory nerve activity in gerbil.

The goal of this research was to define the effects of conductive hearing loss (CHL) produced by malleus removal (MR) on auditory nerve activity in the absence of acoustic stimulation. Subjects were gerbils in two age groups: 21 days (P21) and 42 days (P42). Ensemble background activity (EBA) of the auditory nerve was measured by spectral analysis of a signal recorded from the round window.