Title :
On the synthesis of multiple frequency tone burst stimuli for efficient high frequency auditory brainstem response
Author :
Ellingson, Roger M. ; Dille, Marilyn L. ; Leek, Marjorie R. ; Fausti, Stephen A.
Author_Institution :
National Center for Rehabilitative Auditory Research (NCRAR) located at the VA Medical Center, 3710 SW US Veterans Hospital Road, Portland, OR, 97207 USA
Abstract :
The development and digital waveform synthesis of a multiple-frequency tone-burst (MFTB) stimulus is presented. The stimulus is designed to improve the efficiency of monitoring high-frequency auditory-brainstem-response (ABR) hearing thresholds. The pure-tone-based, fractional-octave-bandwidth MFTB supports frequency selective ABR audiometry with a bandwidth that falls between the conventional click and single-frequency tone-burst stimuli. The MFTB is being used to identify high frequency hearing threshold change due to ototoxic medication which most generally starts at the ultra-highest hearing frequencies and progresses downwards but could be useful in general limited-bandwidth testing applications. Included is a Mathcad® implementation and analysis of our MFTB synthesis technique and sample performance measurements of the MFTB stimulus configuration used in a clinical research ABR system.
Keywords :
Auditory system; Bandwidth; Ear; Fires; Frequency measurement; Frequency synthesizers; Loss measurement; Nerve fibers; Recruitment; Robustness; Algorithms; Audiometry, Evoked Response; Audiometry, Pure-Tone; Auditory Threshold; Automatic Data Processing; Calibration; Computers; Equipment Design; Evoked Potentials, Auditory, Brain Stem; Humans; Models, Statistical; Predictive Value of Tests; Reproducibility of Results; Software; Time Factors;
Conference_Titel :
Engineering in Medicine and Biology Society, 2008. EMBS 2008. 30th Annual International Conference of the IEEE
Conference_Location :
Vancouver, BC
Print_ISBN :
978-1-4244-1814-5
Electronic_ISBN :
1557-170X
DOI :
10.1109/IEMBS.2008.4650125
