• Audera Pro Clinical Evoked Potentials and OAE system from Grason-Stadler

    AUDERA PRO

    CLINICAL EP/OAE
  • Novus AABR newborn hearing screener from Grason-Stadler

    NOVUS

    NEWBORN AABR SCREENER
  • Audera Evoked Potentials system from Grason-Stadler

    AUDERA

    EVOKED POTENTIALS SYSTEM

EVOKED POTENTIALS

Evoked potential (EP) instruments range from fully clinical to screening and PC based, to portable or handheld options. There are also combination devices that have more than one modality. A clinical EP instrument will be the most versatile device with a number of predefined test types such as ECochG, ABR, MLR, LLR, P300, and ASSR to assist with diagnosis and verification of neural synchrony or cortical function. Screening ABR devices include automated protocols that provide Pass or Refer results.

 

CURRENT GSI EVOKED POTENTIALS DEVICES

A clinician testing a patient with the Audera Pro

AUDERA PRO | CLINICAL EP/OAE

The GSI Audera Pro™ is the next generation of the highly acclaimed clinical evoked potential and OAE system, the GSI Audera. The Audera Pro offers a comprehensive battery of test types covering evoked potentials (EP) and otoacoustic emissions (OAEs). The Audera Pro comes with all of the great features of its predecessor but now offers a number of significant updates to support the needs of the modern audiology practice. The Audera Pro generates quick and efficient quality data, providing simple system operation, and utilizes convenient database management. Reporting is clear and concise, allowing test results to be easily organized, combined, and interpreted. The system includes a comprehensive battery of evoked potentials test types including ECochG, ABR, MLR, LLR, SN10, P300/MMN, ASSR, and eABR. Optional modality licenses may be purchased, allowing you to perform a combination of different tests: AEP, ASSR, DPOAE, and TEOAE.

 

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An infant being tested with the GSI Novus AABR screener

NOVUS | NEWBORN AABR SCREENER

The GSI Novus™ is a sleek, handheld, comprehensive newborn hearing screening instrument. The Novus features a touch screen display and intuitive software in a compact hardware design. The Novus may be configured with any combination of AABR, TEOAE, and DPOAE, which allows for seamless two stage infant screening. The Novus offers two methods for simultaneous testing of AABR by using IP30 insert phones with ear tips or ear cups. Testing both ears at the same time offers significant time saving benefits. A wireless charging dock is included with the Novus. Screening tests can be completed any time the battery is low and is placed on the dock. A fully charged Novus can perform approximately 50 ABR or 150 OAE screening evaluations.

 

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Audera evoked potentials instrument from Grason-Stadler

AUDERA | EVOKED POTENTIALS SYSTEM

The GSI Audera™ meets all of your needs for Evoked Potential testing by providing a unique combination of Auditory Evoked Potentials (AEP) and Auditory Steady State Response (ASSR) tests. The Audera comes standard with CE-Chirp and CE-Chirp Octave Band stimuli for frequency-specific threshold evaluations. Wave V generated by a CE-Chirp has been demonstrated to be 1.5 to 2 times larger in amplitude than Wave V generated by a Click. This results in reduced test time with greater waveform amplitude and increased test confidence. Assess both cochlear and retro-cochlear function. With ASSR testing, you may obtain frequency specific results and generate an estimated audiogram. Designed with the user in mind, these features have been refined with more than 10 years of clinical use.

 

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EVOKED POTENTIALS BASICS

Find more educational materials about evoked potentials by visiting GSI ADVANCE.

WHAT ARE EVOKED POTENTIALS (EP)?
Evoked potentials are electrophysiologic tests of the auditory system. In evoked potential evaluations, electrodes are placed on a patient’s head and an auditory stimulus is presented into the ear system. Waveforms from the brain’s response are displayed using EP software and an clinician is able to interpret the results. Evoked potentials are made up of several individual tests such as ECochG, ABR, and ASSR, and each measure a different area of the auditory pathway.

WHAT IS CE-CHIRP?
CE-Chirp is a short duration stimulus that implements adjusted timing to elicit a large response for ABR and AABR testing. The timing adjustments stimulate the entire length of the cochlea at the same time which leads to a response that is up to 1.5 times larger than a traditional click stimulus. The benefit of CE-Chirp is shorter test time and increased confidence in interpretation.

WHAT DIFFERENTIATES AABR FROM STANDARD ABR?
Automated Auditory Brainstem Response (AABR) is used primarily for newborn hearing screening. This type of ABR is automatically analyzed and designed to generate a pass or refer result. Traditional Auditory Brainstem Response (ABR) testing consists of not only ABR testing, but a battery of other evaluations to diagnose hearing loss or other ear disorders. ABR testing is performed by an audiologist, who interprets the results manually and helps develop a treatment plan for the patient.

HOW IS EVOKED POTENTIALS TESTING APPLIED TO NEWBORN HEARING SCREENING?
The AABR protocol has been optimized for universal newborn hearing screening. The equipment is designed to be efficient and easy to use by giving the option to test both ears at the same time. Results are automatically generated as a pass or refer.