Is there any way to change line thickness

Hi, is there any way on brainstorm to increase the PSD line thickness to make the figure look better for my purpose? I could not find a way.
Thank you for your help,
Remi J

You can right-click on any figure and select Figure > Plot edit toolbar / Matlab controls.
This will display the Matlab toolbar to edit the properties of all the displayed objects of the figures. You should be able to increase the width of the lines, and remove/add graphic objects.