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Related Concept Videos

The Vestibular System01:29

The Vestibular System

The vestibular system is a set of inner ear structures that provide a sense of balance and spatial orientation. This system is comprised of structures within the labyrinth of the inner ear, including the cochlea and two otolith organs—the utricle and saccule. The labyrinth also contains three semicircular canals—superior, posterior, and horizontal—that are oriented on different planes.

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Related Experiment Video

Updated: May 9, 2026

Three Dimensional Vestibular Ocular Reflex Testing Using a Six Degrees of Freedom Motion Platform
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Published on: May 23, 2013

A field-programmable analog array development platform for vestibular prosthesis signal processing.

Hakan Töreyin1, Pamela Bhatti

  • 1School of Electrical and Computer Engineering, Georgia Institute of Technology, Atlanta, GA 30332-0250, USA. toreyin@gatech.edu

IEEE Transactions on Biomedical Circuits and Systems
|July 16, 2013
PubMed
Summary
This summary is machine-generated.

This study presents a novel vestibular prosthesis signal processor using a field programmable analog array (FPAA) to restore inner ear function. The device effectively translates head motion into stimulation signals for a current stimulator.

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Area of Science:

  • Biomedical Engineering
  • Neuroprosthetics
  • Analog Signal Processing

Background:

  • Inner ear semicircular canals are crucial for balance.
  • Malfunctioning vestibular organs lead to balance disorders.
  • Current prosthetic solutions require advanced signal processing.

Purpose of the Study:

  • To develop and test an analog signal processor for vestibular prostheses.
  • To utilize a field programmable analog array (FPAA) for real-time signal processing.
  • To create a compact and efficient processor for semicircular canal replacement.

Main Methods:

  • Designed a signal processor using an experimental field programmable analog array (FPAA).
  • Integrated an inertial sensor to detect angular head motion.
  • Mapped angular velocity to control signals for a current stimulator.
  • Demonstrated biphasic pulse control using an H-bridge circuit and a resistive load.

Main Results:

  • The FPAA-based processor successfully completed signal processing in the analog domain.
  • A biphasic current of 100 μA was maintained across a 1 kΩ load with a 2.4 V supply.
  • Consistent performance was achieved across stimulation frequencies (50-350 Hz), pulsewidths (25-400 μsec), and interphase gaps (25-250 μsec).

Conclusions:

  • The experimental FPAA is a viable platform for vestibular prosthesis signal processing.
  • The developed processor can effectively drive a current stimulator for vestibular replacement.
  • This analog approach offers a promising direction for future neuroprosthetic development.