# Mass Univariate ERP Toolbox: installing the Mass Univariate Toolbox

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## Contents |

# Tutorial Sections

**Installing the Mass Univariate Toolbox**<-You are here- Creating
*GND*variables from EEGLAB*set*or ERPLAB*erp*files - Within-subject t-tests
- Between-subject t-tests
- General advice

## Installing the Mass Univariate Toolbox

The Mass Univariate Toolbox is simply a set of MATLAB functions. To use them, you simply need to:

- Download the zip file
- Unzip it
- Put the folder of files someplace sensible (e.g., in your "MATLAB" directory)
- Add the folder to the set of "paths" MATLAB searches when trying to answer a function call

The sections below cover these steps in a bit more detail:

### Download the zip file

You can download the zip file containing all the toolbox functions from:

http://www.mathworks.com/matlabcentral/fileexchange/29274

The file will be called *mass_uni_toolbox.zip*.

### Unzip the zip file

You should be able unzip the file by double clicking it or by using the UNIX command *unzip*. For example:

*>mkdir mass_uni_toolbox
>mv mass_uni_toolbox.zip mass_uni_toolbox/.
>cd mass_uni_toolbox/
>unzip mass_uni_toolbox.zip*

### Put the file someplace sensible

You can put your *mass_uni_toolbox* folder anywhere. It does not need to be in your EEGLAB or ERPLAB directories, but it's probably a good idea to put it in a folder with other MATLAB files and folders.

### Add the folder to the set of "paths" MATLAB searches

An easy way to add your *mass_univariate_toolbox* folder to the set of paths MATLAB searches is to select the *Set Path* option from the MATLAB *File* menu on the MATLAB GUI Toolbar:

You will then see the list of directories MATLAB currently searches. Select *Add Folder*:

Then navigate to and select your *mass_univariate_toolbox* folder in the menu that pops up:

Then click *Open*:

Finally, click the *Save* button on the menu:

Now your *mass_univariate_toolbox* folder should be part of your default set of MATLAB paths whenever you start MATLAB. To double check that this worked, enter the following into the MATLAB command line:

*>>which gui_erp*

MATLAB should respond by printing the path and filename of that function:

*/Users/dgroppe/Documents/MATLAB/mass_uni_toolbox/gui_erp.m*

An alternative way to add a directory to the set of paths MATLAB searches is by creating a script called *startup.m* in your home MATLAB directory and using the MATLAB function *addpath.m*. For more information on how this works see the following pages on the Mathworks website:

Use whichever method you find easier.

## Updating the Mass Univariate Toolbox

From time-to-time we will update the toolbox to add new functionality or to fix bugs. To install a new version of the toolbox, simply delete your old *mass_uni_toolbox* directory and replace it with the new one.