The measurement of Acoustic Brain Responses (ABR) is a basic diagnostic tool in the daily audiologic routine. ABR can be used to detect disorders from the peripheral hearing organ to the neural pathway.

Especially to meet these demanding applications in clinics and private practices the ABR device "Corona" was been developed. One or two channel versions are offered to match different requirements.

Besides standard ABR, middle latency potential (MLP) and late response measurements, methods for the frequency specific threshold determination are available, including Notched-Noise techniques, ASSR and Chirp-ABR.

Furthermore, bone conduction stimulation and VEMP-application are possible as well as other special options.

The devices are easy to use because of a user friendly handling and the availability of all necessary parameters.

Corona – free configurable ABR-System Stimulus rate, stimulus polarity, analysis time and other parameters can be selected. Measurement sequences can be stored and re-used for other measurements.

The universal concept allows to grade up the system with additional options at any time.

Max. Stimulus Level  
Stimulation 100 dB HL
Masking 70 dB HL
Filters  
ABR 30 Hz - 3000 Hz
  150 Hz - 3000 Hz
MLR 30 Hz - 300 Hz
VEMP 90 Hz - 300 Hz
LLR 0,3 Hz - 30 Hz
Repition Rate 0,2 Hz-90 Hz
Stimuli  
Click 150 µs
Gauss 2 ms (0,5; 1; 2; 3; 4 kHz)
Burst 320 ms (0,5; 1; 2; 3; 4 kHz)
Wave Arbitrary stimulus in wav-file
ASSR Amplitude-modulated sinewave
(carrier: 0,5; 1; 2; 4 kHz; modulation 80 - 90 Hz)
PreAmplifier Sensitivity 300 µVss
Input Impendace 10 MOhm
Input Noise Level < 0,8 µV
ADU-Channels 2
ADU-Resolution 16 Bit
ADU-Acquisition Rate 20 kHz
Analysis Time  
Screening-ABR 16 ms
ABR 20 ms
VEMP/MLR 80 ms
LLR 800 ms
Arbitrary System Modules BERA
  Notched-Noise-ABR
  Chirp-ABR
  ASSR
  Screening-ABR
  LLR
  VEMP
  MLR
  Bone conduction (Click)
  ECochG
  MMN
  Wave – arbitrary stimuli
  Trigger IN/OUT
  2. Channel