Again, numerous changes.

Mostly figure polishing and fixing.
Crucial fix to "short" invariance analysis.

main.tex

@@ -713,7 +713,7 @@ the signal for reliable song recognition.
 
 \begin{figure}[!ht]
     \centering
-    \includegraphics[width=\textwidth]{figures/fig_invariance_full.pdf}
+    \includegraphics[width=\textwidth]{figures/fig_invariance_full_Omocestus_rufipes.pdf}
     \caption{\textbf{Step-wise emergence of intensity invariant song
                      representation along the model pathway.}
                      }
@@ -721,6 +721,16 @@ the signal for reliable song recognition.
 \end{figure}
 \FloatBarrier
 
+\begin{figure}[!ht]
+    \centering
+    \includegraphics[width=\textwidth]{figures/fig_invariance_short_Omocestus_rufipes.pdf}
+    \caption{\textbf{Step-wise emergence of intensity invariant song
+                     representation along the model pathway.}
+                     }
+    \label{fig:inv_thresh-lp_short}
+\end{figure}
+\FloatBarrier
+
 The second key mechanism for the emergence of intensity invariance along the
 model pathway takes place during the transformation of the kernel responses
 $c_i(t)$ over the binary responses $b_i(t)$ into the finalized features
@@ -888,6 +898,15 @@ initiation of one behavior over another is categorical (e.g. approach/stay)
 \end{figure}
 \FloatBarrier
 
+\begin{figure}[!ht]
+   \centering
+   \includegraphics[width=\textwidth]{figures/fig_saturation_log-hp_appendix.pdf}
+   \caption{\textbf{}
+                    }
+   \label{}
+\end{figure}
+\FloatBarrier
+
 \begin{figure}[!ht]
     \centering
     \includegraphics[width=\textwidth]{figures/fig_invariance_thresh-lp_appendix.pdf}