diff --git a/topoplot/plotOneSubjectOneDay.m b/topoplot/plotOneSubjectOneDay.m
index 46dc785..d5f8ab3 100644
--- a/topoplot/plotOneSubjectOneDay.m
+++ b/topoplot/plotOneSubjectOneDay.m
@@ -21,5 +21,5 @@
 
     [EEG,~]=readEEGSig(pathToFile,subject,number,maxFile);
 
-    topoplot_Wrapper(EEG,eloc_file,stepSize);
+    topoplot_Wrapper(EEG,eloc_file,stepSize,250);
 end
\ No newline at end of file
diff --git a/topoplot/topoplot_Wrapper.m b/topoplot/topoplot_Wrapper.m
index 51d1eeb..a4951ae 100644
--- a/topoplot/topoplot_Wrapper.m
+++ b/topoplot/topoplot_Wrapper.m
@@ -1,6 +1,15 @@
 function topoplot_Wrapper(EEG,eloc_file,stepSize,samplingFrequency)
 % Wrapper for topoplot_martin()
 % Allows for plottig all EEG-Data of one timeline and sliding through them
+%
+%   EEG - consecutive EEG data (no of channels has to match the one in eloc_file)
+%
+%   eloc_file - path to the eloc-file, type topoplot_martin('demo') for an example
+%
+%   stepSize - number of Datapoints the slider skips in one step (1 for none)
+%
+%   samplingFrequency - sampling frequency for the EEG data 
+
     slider=uicontrol('Style','slider','Min',1,'Max',fix(size(EEG,1)/stepSize),...
         'Value',1,'SliderStep',[stepSize/size(EEG,1),stepSize*10/size(EEG,1)],...
         'Callback',{@topoplotSlide,EEG,eloc_file,stepSize,samplingFrequency},...