I have a matrix of connections from which I create a network graph using the built in functions of Matlab. Is there any toolbox in matlab that can offer better visualization options?
Thank you for your reply. I am bit familiar with BraiNet but I am looking for something like this: http://circos.ca/intro/genomic_data/img/circos-conde-nast-large.png.
Not really an exact answer to your question, but apart from Matlab you may also want to look into other data visualization software. I found Orange data mining and visualization (free software) very useful and easy to use.