Hello alejandro saleh, and welcome to NeuroTalk.

I'm not sure if you realise or not that you've posted to an old 2008 thread, and although there's nothing wrong in doing so, some of the original posters may no longer be with us which means you may not receive the answers that you seek.

May I suggest you start your own new thread, asking the questions you wish to ask, or detailing the information you wish to impart.