diff --git a/text/thesis/02MaterialsAndMethods.tex b/text/thesis/02MaterialsAndMethods.tex
index fd1423e..4a7171a 100644
--- a/text/thesis/02MaterialsAndMethods.tex
+++ b/text/thesis/02MaterialsAndMethods.tex
@@ -9,12 +9,14 @@
             Also see figure~\ref{fig:10-20}.
         \begin{figure}[!p]
             \centering
-            \includegraphics[width=1\textwidth]{eeg_electrodes_10-20.png}
+            \includegraphics[width=\textwidth]{eeg_electrodes_10-20.png}
             \caption{Full 10-20 system}
             \label{fig:10-20}
         \end{figure}
-        \subsubsection{Pburg}
-
+        \subsubsection{\texttt{pburg}}
+        \label{mat:pburg}
+            For power spectral density estimation (PSD) of the EEG signal we used MATLAB's pburg method. This uses Burg's method, a parametrized method of PSD.\\
+            %... see bookmarks
 \subsection{PCA}
 \label{tool:pca}
 \subsection{NMF}
diff --git a/text/thesis/eeg_electrodes_10-20.png b/text/thesis/eeg_electrodes_10-20.png
index 15d25cf..7c4184e 100644
--- a/text/thesis/eeg_electrodes_10-20.png
+++ b/text/thesis/eeg_electrodes_10-20.png
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