Neuro-Audio BERA is designed specifically for ABR testing and combines years of amplifier design and manufacturing experience to provide a flexible system. The recording is made with 1 or 2 channels for air or bone conduction.
Well-considered system characteristics (low level of amplifier noise) and software features (adaptive notch filter, weighted averaging, statistical measures of signal and noise, up-to-date algorithms for automatic response detection) help a device user to obtain a high-quality record quickly. All tests can be performed when patient is awake (non-sedated).
Chirp stimulus is a new stimulus that allows to obtain the response of higher amplitude compared to traditional stimuli. Chirp stimulus takes into account the cochlear anatomy and uses different time shift for different frequencies. Thus, the low frequencies reach the cochlea before the high frequencies. But in the cochlea itself the high-frequency receptors are located prior to the low-frequency receptors. Due to such stimulus waveform, hair cell responses along the whole length of the cochlea (or in one octave range) occur at the same time (synchronized). This leads to the increase of combined neural response that comes to the auditory nerve.
Neuro-Audio BERA delivery set includes TDH-39 headphones, the most popular headphones model for BERA testing in the world .
We can optionally supply Ear Tone 3A insert earphones, B-71 bone vibrator (which is applied to estimate air-bone gap to determine type of hearing loss), sound field speakers, TDH-39 acoustically shielded headphones, HDA-280 headphones.
Modern interface, powerful database, configurable, normative data, high quality of recording and reproducible results allow a specialist to solve a wide range of daily audiological problems with highest accuracy. A battery of pre-defined test templates and features streamline the workflow and productivity. Neuro-Audio/ABR can be used both in clinics and research facilities.
| • | All in one solution untuk ABR, MLR dan LLR system | ||
| • | DPOAE, TEOAE & SA OAE with DPOAE up to 12 KHz (early objective detection of ototoxic and noise-induced heraing loss) | ||
| • | Multi-ASSR Otomatis | ||
| • | Single-ASSR Otomatis | ||
| • | Kualitas Akuisisi Tinggi dan Akurat | ||
| • | New standard for routine tests | ||
| • | VEMP & ECochG | ||
| • | Reliable storage of patient records and test data | ||
| • | Customized reports | ||
| Number of channels | : | 2 |
| Input voltage range | : | 20 μV to 50 mV |
| The admissible error of voltage measurement should be within : | : | |
| in the voltage range from 20 to 100 μV | : | ± 15 % |
| in the voltage range from 0.1 до 50 mV | : | ± 5 % |
| Voltage range of the obtained averaged evoked potentials | : | 0.1 to 400 μV |
| The admissible relative error of EP voltage measurement in the range from 1 to 400 μV at not | : | ± 10 % |
| Sampling rate | : | 200 Hz – 80 kHz |
| Input impedance | : | not less than 90 MΩ |
| Input noise in 2–10000 Hz range (RMS) | : | not more than 0.5 μV |
| High pass filter | : | 0.01–5000 Hz |
| Low pass filter | : | 10–10000 Hz |
| Notch filter | : | not less than 40 dB |
| Common-mode rejection | : | not less than 100 dB |
| Gain | : | 21-20832 |
| Auditory stimulator | : | |
| Number of auditory channels TDH-39 headband static force | : | |
| Stimulation level (maximal for click) | : | 137 dB SPL |
| Stimulation level (maximal for tone burst) : | : | 144 dB SPL (at 3 kHz frequency) |
| The sound pressure level at pure tone generation via the headphones: | ||
| at tone frequency within 125 – 4000 Hz range | : | with ±3.0 dB accuracy |
| at tone frequency within 4 – 8 kHz range | : | with ±5.0 dB accuracy |
| Stimulation level (minimal for pure tone) | : | -10 dB HL (or less) |
| Stimulus repetition rate | : | 0.1–100 Hz with the admissible relative deviation of ± 0.1 % |
| Tone burst stimulation | ||
| tone | : | 20–10000 Hz |
| stimulus duration | : | 0.05–50 ms |
| Click stimulation | ||
| stimulus duration | : | 50–5000 μs with the admissible relative deviation of ± 2 %. |
| Continuous tone stimulation | : | pure tone |
| stimulus types | : | amplitude, frequency |
| amplitude and frequency modulation | ||
| carrier frequency | : | 125-8000 Hz |
| modulation frequency | : | 20–200 Hz |
| Maximum total harmonic distortion should not exceed | ||
| for air conduction | : | 2.5% |
| for bone conduction | : | 5.5% |
| Chirp stimulus (cochlear delay compensation) | : | |
| wide-band | : | 10–10000 Hz |
| narrow-band | : | 499 Hz, 1 kHz, 2 kHz, 4 kHz |
| Stimulus polarity | : | condensation, rarefaction |
| alternating | ||
| Frequency characteristics of masking noise | : | White noise (0.02–10000 Hz) |
| Noise masking intensity | : | 0–127 dB SPL (stimulus relative) |
| Left/right/double-sided stimulation | : | yes |
| Number of bone vibrator channels | : | 0 |
| Stimulus intensity at bone vibrator output | : | -10 – 80 dB HL (at 3 kHz |
| Bone vibrator amplifier gain | : | (19.5 ± 0.5) dB |
| General parameters and specifications | ||
| Interface | : | USB |
| Transport conditions | ||
| temperature | : | from - 50ºC up to +50ºC |
| relative humidity | : | 20%–95ºC |
| pressure | : | from 70 kPa |
| Storage conditions | ||
| temperature | : | from +5ºC up to +40ºC |
| relative humidity | : | 30%–85% |
| pressure | : | 70–106 kPa |
| Neuro-Audio electronic unit | : | 1 |
| Assembled holder | : | 1 |
| Holder mount | : | 1 |
| Cup electrode with cable | : | 5 |
| Y-adapter | : | 1 |
| OAE probe | : | 1 |
| Set of eartips | : | 1 |
| Auditory stimulator (Headphones) 2x6.3 mono, shielded | : | 1 |
| Insert Earphone | : | 1 |
| Bone vibrator | : | 1 |
| Electrode adhesive paste | : | 1 |
| Abrasive paste for skin preparation | : | 1 |
| Medical tape Transpore | : | 1 |
| Adapter for 2-channel EP recording | : | 1 |
| Disposable surface electrode | : | 100 |
| Cable for disposable electrode: “Alligator” clip - touch-proof (green) | : | 1 |
| Cable for disposable electrode: “Alligator” clip - touch-proof (red) | : | 1 |
| Cable for disposable electrode: “Alligator” clip - touch-proof (black) | : | 1 |
| Cable for disposable electrode: “Alligator” clip - touch-proof (blue) | : | 1 |
| User manual "Neuro-Audio.NET" | : | 1 |
| Transportation bag | : | 1 |
| License for the use of software "Neuro-Audio.NET" with additional software module "Neuro-Audio.Net/ABR | : | 1 |
| License for the use of software "Neuro-Audio.NET" with additional software module "Neuro-Audio.Net/OAE | : | 1 |
| License for the use of software "Neuro-Audio.NET" with additional software module "Neuro-Audio.Net/ASSR | : | 1 |
| License for the use of software "Neuro-Audio.NET" with additional software module "Neuro-Audio.Net/MULTI-ASSR | : | 1 |
| License for the use of software "Neuro-Audio.NET" with additional software module "Neuro-Audio.Net/VEMP | : | 1 |
| License for the use of software "Neuro-Audio.NET" with additional software module "Neuro-Audio.Net/ECochG | : | 1 |
| Aksesoris Lokal: | ||
| PC | : | 1 |
| Printer | : | 1 |
| Trolley | : | 1 |
| UPS | : | 1 |