SmartEP

Auditory Evoked Potentials

SmartEP, is the most complete and flexible platform for the acquisition of Evoked Potentials. A straightforward Control Panel allows for fast data acquisition, while the great variety of controls allow you to perform tests the way you want them.

Base functionality includes:

• Electrocochleography (ECochG).
• Click and Tone Auditory Brainstem Response (ABR).
• Middle Latency Response (MLR).
• Late Latency Response (LLR).

Optional Add-on Modules

• P300/MMN Add-on module.
• Electrical ABR for Cochlear Implants (eABR).
• Chained Stimulus
• Notched Masking.

Somatosensory Evoked Potentials

With the SmartEP SSEP module you can efficiently evaluate the functional integrity of the somatosensory pathway using surface electrical pulse stimulation of the upper and lower limbs. SmartEP SSEP can also be
used for electroneuronography (ENoG).

Features include:

• Flexible stimulus choices.
• Hand-held stimulator probe.
• Built-in impedance meter indicator.
• On-screen current readout.
• Easy data acquisition.
• Fast waveform processing.
• Customizable report generation.

Visual Evoked Potentials

SmartEP Visual Evoked Potential module elicits VEP responses using patterns on a LED light array, providing valuable diagnostic information about conditions such as optic neuritis, optic tumors, retinal disorders, and demyelinating diseases such as multiple sclerosis.

Features include:

• Visual Stimulator box with 144 light elements.
• Centering point for test subject focusing.
• 138 pre-programmed patterns.
• Half, full, or quarter field stimulation.

 

Research options include:

• Auditory High Frequency.
• P300 Eye Blink Amplifier.
• Advanced Auditory Research module.
• Continuous Loop Average Deconvolution (CLAD).
• Low Current Electrical Stimulator.
• VEP for animal research.

Research options may have restrictions for use on human subjects based on your location. Please contact us for additional details.

Hardware Platforms

SmartEP can be used with any of our hardware platforms. Refer to the table below for details about the available capabilities for each platform. If you need additional information, please contact us.

SmartEP Software Capabilities	USB Lite1	USB Jr.	USB Box
ECochG	•3	•	•
ABR	•	•	•
MLR	•3	•	•
LLR		•	•
Chained Stimuli		•	•
P300		•	•
P300 Eye Blink Amplifier2			•
High Frequency2			•
eABR (Trigger)			•
eeABR2			•
Notched Masking			•
CLAD			•
Visual EP			•
Visual EP (Animal)2		•	•
Low Current Elec. Stim.2			•
Somatosensory			•
1 The USBLite platform has limited sound output range 2 Research use and/or limited clinical availability 3 Limited usability due to hardware filters

Brochures

SmartEP Product Brochure
Download the brochure for additional information about the SmartEP product capabilities in the acquisition of auditory, somatosensory, and other evoked potentials.

 

SmartEP Application Notes

Acquiring Click ABR with SmartEP
This application note reviews the basic principles of acquiring auditory brainstem responses using click stimulation. It also contains the standard recommended settings for acquiring ABR recordings using SmartEP.

Tone Burst ABR with SmartEP
Click stimulation only gives you a general representation of neural synchrony. To get more frequency specific information it is necessary to use tone burst stimulation. This note is an add-on to the Click ABR application note.

Estimating Electrophysiological Hearing Levels
When determining if an individual subject's hearing is normal, it may be necessary to establish a baseline for hearing levels. This application note explains the procedure for generating these estimates. The procedure can be used for human testing and for animal research applications.

Bone Conduction ABR using SmartEP
Some patients may be difficult to test using standard air conduction techniques or may have an air-bone gap; in those situations, bone conduction become essential. This application notes describes the methodology to acquire ECochG recordings using tiptrode electrodes in SmartEP

Acquiring ECochG using SmartEP
Electrocochleography lets you evaluate the response to auditory stimulus in the first stages of the auditory nervous system. This application notes describes the methodology to acquire ECochG recordings using tiptrode electrodes in SmartEP

ECochG using TM-Wick electrodes in SmartEP
Electrocochleography can also be performed using Tympanic Membrane Wick electrodes. These electrodes will produce a stronger response, as they lay closer to the source emitters. This application note describes how to use the TM-Wick electrodes for ECochG acquisition.

Acquiring Middle Latency Responses with SmartEP
Middle Latency Responses, also known as AMR or AMLR, occur after the ABR, reflecting the response of the auditory cortex. This application note describes how to acquire these auditory evoked potentials and the recommended test settings to do so.

Acquiring Late Latency Responses with SmartEP
Late Latency Responses, also known as ALR, appear to reflect the response of the auditory cortex, and typically occur between 50 and 250 milliseconds from the time of stimulation. This document describes the procedure and recommended settings needed for LLR acquisition.

Acquiring P300/MMN using SmartEP
P300 and Mismatched Negativity responses are late auditory evoked potentials which can provide useful information about the nature of language and information processing problems in the brain. This document outlines recommended settings, patient instruction, and the proper procedure to acquire P300 and MMN responses.

Cochlear Implant eABR using SmartEP
Electrical ABR can be used to obtain ABR responses from patients that have been implanted. This procedure uses the CI machine to stimulate, while SmartEP acts as an averager with the help of a trigger input.

Nucleus eABR using WinDPS and SmartEP
This application note is an add-on to the eABR application note. It describes the use and specific settings for use with Nucleus WinDPS.

Nucleus eABR using NRT 3.0 and SmartEP
This application note is an add-on to the eABR application note. It describes the use and specific settings for use with Nucleus NRT 3.0.

COMBI 40+ Cochlear Implant eABR and SmartEP
This application note is an add-on to the eABR application note. It describes the use and specific settings for use with COMBI 40+ implants.

Clarion Cochlear Implant eABR and SmartEP
This application note is an add-on to the eABR application note. It describes the use and specific settings for use with Clarion implants.

Animal Trans-tympanic eeABR with SmartEP
When doing ABR research on animal subjects, the auditory nerve may be stimulated electrically using this special SmartEP modality and needle electrodes. This note reflects a typical setup, actual settings and electrode placement may vary based on your application.

Notched Noise Masking using SmartEP
The Notched Noise Masking option allows the use of ipsilateral noise for the acquisition of isolated frequency specific responses. Some medical conditions may be able to be detected using the procedure outlined in this application note.

Acquiring Visual Evoked Potentials (VEP) using SmartEP
This application note outlines the procedure and recommended settings for acquiring VEP recordings using the SmartEP VEP modality. The VEP modality requires the use of the VEP Stimulator board.

Somatosensory Evoked Potentials (SSEP) using SmartEP
The SmartEP somatosensory modality can provide electrical stimulation using surface electrodes to determine the integrity of the somatosensory pathways. This application notes outlined the procedure and recommended settings for SSEP acquisition.

Electroneurography (ENoG) using SmartEP
This application note describes the proper procedure for the acquisition of ENoG recordings using the SmartEP somatosensory modality. This procedure is useful for evaluating and measuring the integrity of the facial nerve.

Exporting Data from SmartEP
This application note shows the procedure for exporting acquired data from SmartEP. The ASCII format exported data can be later imported and used in other programs such as Microsoft Excel or MATLAB. This document also applies to SmartEP-ASSR and SmartTrOAE.

 

Related Documents

Using the Stimulus Conversion Utility
This application note describes the conversion of WAV format files to the IHS stimulus format. This document applies to SmartEP, IVRA, and SmartAudiometer.

Calibration of High Frequency Transducers
This document shows the proper equipment, settings, and procedure necessary to verify the calibration of the High Frequency Transducers.

High Frequency Transducer calibration in animal ears
The cavity size of animal ears vary greatly. In order to achieve accurate recordings when doing animal research, the calibration needs to be adjusted to reflect the size of the cavity for the particular species.