ABR [B.A.E.P]

B.E.S.S. - Auditory Brainstem Response [B.A.E.P.] Systems

                      ABR tracks nerve signals from the inner ear as they travel through the eighth cranial nerve to the brain. The test is used to identify where along that path hearing loss has occurred. ABR is often used for individuals with a sensorineural loss in just one ear. This loss can sometimes be caused by an acoustic neuroma. If the ABR is normal along that region of the path, the chances of having this tumor are quite small. ABR testing can be done on infants, children and adults since it requires no conscious response from the person being tested. A small speaker, ususally headphones or insert earphones which produces a clicking sound are placed on the ear. Electrodes automatically record the nerve signals.

Features:

B.E.S.S. - ABR [Brainstem Auditory Evoked Potential] system has 2 channels 

  • Auto Peak Marking
  • Marking Peaks Online
  • Clicks and Tone Bursts
  • Volume change in 1DB steps
  • White Noise Masking
  • Software controlled Stimulus parameters
  • Auto measurement
  • Multiple Session Display
  • Auto comparison with normative data
  • Customized reports
  • Hearing threshold test

Click Properties

  • Hold Time – 100µs to  1ms
  • Polarity - Rarefaction, Condensation or Alternate
  • Stimulus Presentation – Ipsilateral / Contralateral
  • Intensity – 40dB to 110dB pep SPL with 1dB step size
  • Noise Masking -White noise with dB level option
  • Conduction Type - Air Conduction(AC)/ Bone Conductor(BC)
  • Click Rate – 1 to  30 clicks/sec

Tone Burst Properties

  • Frequency –500Hz, 1KHz, 2KHz, 3KHz, 4KHz
  • Windowing - Blackmen, Hanning, Rectangular or Linear
  • Stimulus Presentation – Ipsilateral / Contralateral
  • Intensity – 40dB to 110dB pep SPL with 1dB step size
  • Noise Masking -White noise with dB level option
  • Conduction Type - Air Conduction(AC)/ Bone Conductor(BC)
  • Rate – 1 to  30 bursts/sec

Recording Parameters

  • Sampling Rate – 10k, 20k, 40k
  • Recording Window – 0 to 20 ms
  • Averaging – Averaging, Weighted Averaging, Sweep Weighted Averaging
  • Digital Filters – High Pass – 30 to 350Hz
  • Low Pass – 1KHz to 3KHz
  • Superimposition of waveform and options for (wave 1 + wave 2), (wave 1 – wave 2), (wave 2 – wave 1)
Peak Marking

  • Real time peak marking with auto peak detection                         
  • Peak Marking for I, II, III, IV, V
  • Time latency display – (I – III), (III – V), (I – V)
  • V/I amplitude ratio.
  • Mean and SD variation from normal


Patient Database

  • Multisession
  • Detailed Patient information
  • Extensive database capture option for diagnostic grouping