THE AUDITORY MODELING TOOLBOX

Applies to version: 0.9.8

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ROENNE2012 - Simulates an ABR to any given stimulus

Usage

[waveVamp, waveVlat]  = roenne2012(flag)

Output parameters

waveVamp Amplitude of simulated ABR wave V.
waveVlat Latency of simulated ABR wave V peak.

roenne2012(stim,fsstim,stim_level) returns simulated ABR wave V latency and amplitude. The stimulus stim must be defined in pascals and calibrated so a pure tone stimulus has an RMS value of 1. Transient stimuli (which this model is designed to simulate) has to be calibrated in peSPL acoustically. This is not the same as "just" having a numerical peak to peak value of the same level as the pure tone. For calibrated click, chirps and tone bursts, see roenne2012_click, roenne2012_tonebursts and roenne2012_chirp.

The parameter fsstim gives the sampling frequency of the input stimulus, and stim_level the level. As input is calibrated to an RMS-value of 1, a stimulus level in (pe)SPL has to be set.

The flag may be one of:

'plot' Plot the output. See plot_roenne2012.
'noplot' Do not plot. This is the default.
'fsmod',fsmod Auditory nerve model sampling frequency. Default value is 200000.
'flow',flow Auditory nerve model lowest center frequency. Default value is 100 Hz.
'fhigh',fhigh Auditory nerve model highest center frequency. Default value is 16000 Hz.
'min_modellength',mn
 Minimum length of modelling measured in ms. Default value is 40.

Examples:

Simulates a click evoked ABR (c0 of the loaded file is a click). Note that the click loaded in this example starts after 15ms. The simulated wave V latency is thus also 15 ms "late"

stim=data_elberling2010('stim');
roenne2012(stim.c0,30e3,60,'plot')

This code produces the following output:

ans =

    0.4644
roenne2012_1_1.png roenne2012_1_2.png roenne2012_1_3.png

Please cite Rønne et al. (2012) and Zilany and Bruce (2007) if you use this model.

References:

C. Elberling, J. Calloe, and M. Don. Evaluating auditory brainstem responses to different chirp stimuli at three levels of stimulation. J. Acoust. Soc. Am., 128(1):215-223, 2010.

F. M. Rønne, T. Dau, J. Harte, and C. Elberling. Modeling auditory evoked brainstem responses to transient stimuli. The Journal of the Acoustical Society of America, 131(5):3903-3913, 2012. [ DOI | http ]

M. S. A. Zilany and I. C. Bruce. Representation of the vowel (epsilon) in normal and impaired auditory nerve fibers: Model predictions of responses in cats. J. Acoust. Soc. Am., 122(1):402-417, jul 2007.

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