In this chapter, we will show the process for the generation of the following figure. In this figure, we show the ERP of P300 on channel Pz with its topography on 332 ms. The corresponding time-frequency maps in the conditions of target and nontarget are illustrated in the bottom panel.
Single Subject Result1

Step1. Open the Figure Module

In the folder of rawdata1, selected the datasets

  • Sub093 P300 nontarget
  • Sub093 P300 target
  • bl avg cwt bl reref ep_S 9 sp_filter ica chan_interp butt sel_chan sub093
  • bl avg cwt bl reref ep_S 10 sp_filter ica chan_interp butt sel_chan sub093

Click “Figure->General Figure creator” to open the figure module with a blank canvas.
Single Subject Result2

Step2. Create the Subfigures

2.1 Add a curve, two images and one topography into the canvas.

2.2 For the second image and the topography, enable the colorbar.

  • Click the content button in the toolbar, select image3 in the Subfigure and enable the colorbar.
  • Select topograph4 in the Subfigure and enable the colorbar.

Single Subject Result3 Single Subject Result4 Single Subject Result5

2.3 Adjust the position for each subfigure

  • Click the figure button in the toolbar, select Curve1. Set the Title to “P300”, Font size as 12, and the position as x=50, y=340, w=600 and h=250.
  • Select Image2. Set the Title to “Target”, Font size as 12, and the position as x=70, y=50, w=250 and h=250.
  • Select Image3. Set the Title to “Nontarget”, Font size as 12, and the position as x=360, y=50, w=250 and h=250.
  • Select Topograph4. Set the Title to “332 ms”, Font size as 12, and the position as x=480, y=470, w=120 and h=120.

Single Subject Result6 Single Subject Result7 Single Subject Result8 Single Subject Result9


After step 2, the figure will be like the following figure,
Single Subject Result9

Step3. Add the Content

  • Click the content button in the toolbar, select P300 in the Subfigure. Add a curve with the data source as “Sub093 P300 target” and channel as Pz.
  • Add a curve with the color as blue [0,0.45,0.74], data source as “Sub093 P300 nontarget” and channel as Pz.
  • Add a line with the position as x1=0.332, y1=-5, x2=0.332 and y2=10.8619.

Single Subject Result9 Single Subject Result10 Single Subject Result11

  • Select Target in the Subfigure. Set the data source as “bl avg cwt bl reref ep_S 9 sp_filter ica chan_interp butt sel_chan sub093”, channel as Pz, range from -9 to 9, enable the contour, and set the width as 0.5, start from 0 to 0.
  • Select Nonarget in the Subfigure. Set the data source as “bl avg cwt bl reref ep_S 10 sp_filter ica chan_interp butt sel_chan sub093”, channel as Pz, range from -9 to 9, enable the contour, and set the width as 0.5, start from 0 to 0.
  • Select 332 ms in the Subfigure. Set the data source as “Sub093 P300 target”, x from 0.332 to 0.332, head radius as 0.5, shrink as 0.95, range from -5 to 10.8619 to keep it the same as the range of P300 curve. For the electrodes, set the szie as 8 and marker the channel Pz.

Single Subject Result9 Single Subject Result10 Single Subject Result11


After step 3, the figure will be like the following figure,
Single Subject Result12

Step4. Set the axis parameters

  • Click the axis button in the toolbar, select P300 in the Subfigure. and enable the Legend. Select curve1 in the listbox of the content, change its name to Target in the legend. Select curve2 in the listbox of the content, change its name to NonTarget in the legend. For x axis, set the x-lim from -0.5 to 1.5 second, change the location to origin, which is only support by the higher version Matlab. Enable the label, and set it as “Time [sec]”. For y axis, change the location to origin, which is only supported by the higher version Matlab. Enable the label, and set it as “Amp [\muV]”
  • select Target in the Subfigure. For x axis, set the x-lim from -0.5 to 1.5 second and set the label as “Time [sec]”. For y axis, set the label as “Freq [Hz]”.
  • select Nontarget in the Subfigure. For x axis, set the x-lim from -0.5 to 1.5 second and set the label as “Time [sec]”. For y axis, set the label as “\muV^2/Hz”, which actually is used for the label of the colorbar in the following edit.

Single Subject Result13 Single Subject Result14 Single Subject Result15


After step 4, the figure will be like the following figure,
Single Subject Result16

Step5. Export the Figure

Until now, we have finished the edit of the figure in Letswave. In the following, we need to export the figure, for a further edit in the other software. Click the button “export the figure” in the toolbox to export the figure as vector files, like eps or pdf format. Here, we use Illustrator to add a box outside the figure and adjust the position for the text. Save the figure as “Figure1.lw_figure” by clicking the second button save the file in the toolbar. We can save the figure for the editing next time. Further, the third button data management can help you to change the data source to generate a new figure.
Single Subject Result17 Single Subject Result18


Finally, we can get the Figure “Fig_1.jpg” as is shown above.
Single Subject Result19