The Acoustically Evoked Potential with Inverse Tone Burst Stimulation Compared to a Model Experiment

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Abstract
‘Inverse tone burst stimulation’ refers to a brief interruption of a continuing tone. Stimulation by such an interruption affects the form and amplitude of the evoked potential. In tone interruption two distinct potentials, an off-potential by the break, and an on-potential by restoring the tone, can be discerned. The amplitudes of these two potentials show approximately equal values with tone breaks ≤400 ms. The phenomena of superposition with the shorter tone breaks determine the overall acoustically evoked potential (AEP) curve shape as a function of the duration of the break. Model experiments were carried out in which an averaged potential was being time-shifted by different amounts and added to the same potential which, however, was not being time-shifted. These model experiments simulated the phenomena of superposition and brought forth a lucid explanation.