Main Menu BrainStorm's main menu gives the user the option of selecting screens showing labelled images of cross-sections (both myelin-stained sections and MRI scans are available), gross dissections or diagrams of various parts of the brain and spinal cord. It also contains over 400 information (text) screens about various structures and systems within the nervous system but these must be reached from the index, which is accessible from all screens in BrainStorm, including the main menu.