Vestibular-evoked Myogenic Potential (VEMP) Stimulating and Recording System
Date Issued
2009
Date
2009
Author(s)
Weng, Wei-Jie
Abstract
The human otolith organs in the inner ear are peripheral sensory apparatuses responsible for the perception of head and body orientation. They respond to both linear head motion and static tilt with respect to gravitational axis. In recent years, the development of vestibular-evoked myogenic potential (VEMP) theory allows clinicians to evaluate the function of otolith organs and otolith-related disorders objectively and non-invasively by means of the recording of myogenic potential elicited by proper stimulation of these organs. The aim of this study is to integrate three kinds of stimulation modes－air conducted sound, bone conducted vibration(with the recording of head acceleration), and galvanic stimulation－and a four-channel recording system optimized for VEMP recording, in replacement of commercial machines inadequate for their function and system integration, was developed. The system is implemented on a personal computer platform through the use of an A/D data acquisition card and a LabVIEW GUI-based virtual instrument. The low-cost, low-power consumption stimulating and recording system is flexible and suitable for future clinical experiments.
Subjects
vestibule
otolith organ
vestibular-evoked myogenic potential (VEMP)
balance
vestibular stimuli
Type
thesis
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