Do our brains really resist new information and differing beliefs?

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I was reading this article "the three characteristics of an educated man" and came across a really interesting concept. (non commercial link for those who want to read it.) The article talks about what happens if you look at a brain scan of someone hearing an argument that contradicts their own position. Apparently, when that happens, blood flow to the part of the brain that controls rational thought is actually restricted until they hear something that is more in line with their own views. I wanted to know more about the sourcing on this particular idea, and I really wanted to read the study that looked at this behavior, but haven't been able to find it yet. However, I can really see the effect of this physiological effect. I notice it in myself, how I am less likely to really listen when hearing someone's differing view. According to the article, a way to get around this is to actively seek out different perspectives on everything. Eventually, you can become "open minded" without having your brain fall out. You can become more reasonable when hearing other opinions you don't agree with, and become rational about it instead of just shutting them out. Who knew "open minded" could really have to do with how open certain blood vessels are?