Individual mean growth functions for the eCAP amplitude in chronic animals.

<p>Each graph shows the mean (±SEM) eCAP amplitude as charge increases in the six chronic animals (C1-C6). Each curve was plotted with all the recording sessions (excluding the 1^st week) in a given animal. Blue curves represent eCAP amplitudes measured when charges were increased by an increase in pulse amplitude; red curves represent eCAP amplitude measured when charges were increased by an increase in pulse duration. The evolution of these two curves markedly differed from one animal to the next. Note that for some animals (C1, C2), the shape of these two curves roughly follow those shown in the group data (<a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0201771#pone.0201771.g002" target="_blank">Fig 2B</a>). In contrast, for other animals (e.g., C5, C6) the two curves clearly differ from the group data (<a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0201771#pone.0201771.g002" target="_blank">Fig 2B</a>).