Instructables

Tutorial 6 - MATLAB and Arduino part 1 (up and running)

video Tutorial 6 - MATLAB and Arduino part 1 (up and running)
How to get Arduino working with MATLAB.

Unfortunately MATLAB can be expensive, but you may download a similar version of MATLAB below called FreeMat.

FreeMat:
http://freemat.sourceforge.net/

File:
www.mathworks.com/matlabcentral/fileexchange/32374-matlab-support-package-for-arduino-aka-arduinoio-package?download=true