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From Intelligent Hearing Systems, USA
SmartEP Software Features
- Easy-to-use Windows® menu interface for fast setting of parameters and efficient evoked potential processing.
- True multi-tasking operation allows changing of system parameters and data analysis during patient testing.
- EcochG, ABR, SN10, MLR, LLR and P300/MMN modalities.
- Chained-Stimuli feature for rapid acquisition of intensity series recordings.
- Automatic default parameters allows the system to be setup for fast start-up and testing.
- User-defined testing protocols for automated data collection.
- User-selectable artifact rejection level.
- Easy data and report retrieval.
- Waveforms can be easily measured and labelled using a mouse.
- Built-in system calibration module, self-check and diagnosis.
- Basic system hardware can be utilized to economically upgrade to SmartOAE, SmartScreener, ASSR, eABR, VEMP and IVRA hearing screening and testing systems.
Stimulus Specifications
- Types: Click, Pure Tone, or User-specified
stimulus data file.
- Frequency: Standard up to 8 kHz; Optional
upto 32 kHz.
- Duration: from 25 up to 500,000 µsec., 25
µsec. Increments.
- Windows: Rectangular, Trapezoidal,
Triangular, Cosine, Extended Cosine, Blackman, and Exact Blackman
- Rate: 0.1 to 100/sec. (and higher with
reduced sampling window), 0.1/sec. Increments.
- Intensity (click): 0-100 dB nHL (0-132dB
SPL).
- White noise masking.
Now Available on three different plateform ->
USB LITE
USB JR
USB BOX
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USB Lite
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USB Jr.
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USB Box
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ASSR
- Quick & Accurate Frequency Specific
Hearing Evaluation
- Can be objectively evaluated using spectral
techniques.
- Continuous Stimulus composed of one or
multiple carrier frequencies.
- Generate complex stimuli for steady state
acquisition, selecting up to four simultaneous carrier and modulation
frequencies.
- Automatic determination of presence of
response for each frequency, providing threshold information.
- Illustrative graphs of the acquired
responses., including time and spectral domain signals. A phase diagram
to indicate strength of each stimulus frequency.
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Auditory Steady State Responses are auditory evoked potentials elicited by the use of repetitive stimuli. The use of these methods allow for
accurate threshold detection and objective audiogram generation.
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Phasor Diagram for ASSR
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Steady State responses are ideal for objective frequency specific hearing
evaluation. Unlike transient responses that are analyzed in the time
domain, ASSR are using spectral and statistical analylsis techniques,
reducing the potential for human error. The technique also allows for
multiple frequencies to be evaluated in both ears simultaneously, reducing
test times. The system provides a Response / No Response
output evaluation for each frequency and intensity level tested.
Unlike conventional transient responses such as ABR, the steady
state responses do not require tedious interpretaton of time domain
signals. The responses are automatically evaluated by comparing
the response strength to the background EEG noise. |
Audiogram Obtained through ASSR
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SmartEP-ASSR provides illustrative graphs
and tables to simplify analysis of the acquired responses. An easy
to read color-coded phasor diagram is used to illustrate the response
strength for each stimulus frequency. A Phase-Intensity analysis
graph shows the effect of intenisty on the response latency. The
response Audiogram helps determine hearing thresholds automatically. |
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| Researchers and advanced users may generate
customised complex stimuli for steady state acquisition, selecting
up eight simultaneous test frequencies can be used for each ear. |
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* Conditions Apply Contact Us for more Details |
Tel.: 011-26186724, 26186524, 26100088
Comments and questions: ci@vsnl.comCopyright © Care
International URL:
http://www.careinternational.com |
