Objective Assessments of Bone-conducted Ultrasonic (BCU) Hearing by Auditory Evoked Fields

Nonlinear explanation for bone-conducted ultrasonic hearing.

Human listeners can perceive speech from a voice-modulated ultrasonic carrier presented via a bone-conduction stimulator. This study explored the psychoacoustic characteristics and underlying mechanisms of ultrasonic hearing by measuring difference limens for frequency (DLF) for pure tones modulated onto ultrasonic carriers. Human subjects were presented with two pulsed tones and asked to judge...

Effects of rise-time of stimulus on auditory N1m to air-conducted, bone-conducted audible and bone-conducted ultrasonic sounds

condition elicited smaller N1m amplitude than the incongruent condition. In both hemispheres, the stepwise multiple regression revealed that the reduction rate of N1m amplitudes between the presented conditions correlated significantly with the source activities in motor and superior temporal areas. The present study suggested that some sensorimotor mediated prediction modulated auditory activi...

Cerebral neuromagnetic responses evoked by two-channel bone-conducted ultrasonic stimuli

T. Sakaguchi, T. Hirano, T. Nishimura, S. Nakagawa, Y. Watanabe, H. Hosoi, S. Imaizumi, and M. Tonoike Department of Electronics, Doshisha University, Kyo-Tanabe, Kyoto 610-0321, Japan; Department of Otorhinolaryngology, Nara Medical University, Kashihara, Nara 634-8522, Japan; MEG Section, Life Electronics Research Ctr., Electrotechnical Lab., Ikeda, Osaka 563-8577, Japan; Department of Speech...

Estimating Hearing Thresholds in Hearing-Impaired Adults through Objective Detection of Cortical Auditory Evoked Potentials Authors:

Estimating Hearing Thresholds in Hearing-Impaired Adults through Objective Detection of Cortical Auditory Evoked Potentials.

BACKGROUND Hearing threshold estimation based on cortical auditory evoked potentials (CAEPs) has been applied for some decades. However, available research is scarce evaluating the accuracy of this technique with an automated paradigm for the objective detection of CAEPs. PURPOSE To determine the difference between behavioral and CAEP thresholds detected using an objective paradigm based on t...