[projects] fixes and improvements

projects/project_adaptation_fit/adaptation_fit.tex

@@ -24,7 +24,7 @@ electroreceptors of the weakly electric fish \textit{Apteronotus
   \textit{spike\_times} of an P-unit electroreceptor to a stimulus of
   a certain intensity, i.e. the \textit{contrast} which is also stored
   in the file. The contrast of the stimulus is a measure relative to
-  the amplitude of fish's field, it has no unit. The data is sampled
+  the amplitude of fish's field and is given in percent. The data is sampled
   with 20\,kHz sampling frequency and spike times are given in
   milliseconds (not seconds!) relative to the stimulus onset.
   \begin{parts}