Adaptation effect is adapter dependence.

<p>A. The responses of adapter and the neighboring frequencies in a single site, in control (black line) and adapting (gray line) sequences (an isointensity curve at the adapter level) B. The same as (A) with a different adapter (frequency 4 kHz). Different adapter causes a different level of adaptation. In part (A) that the best frequency was selected as adapter, the reduction of adapting sequence in comparison to control sequence was more than this reduction in part (B). It shows that the responses of the second sequence in the same site with two different adapters, have different behaviour. The flash marks indicate the adapter location of the second sequence.