More Neuroimaging Techniques?

I'm not going to lie: when you've only had one day of class, it's kind of hard to come up with a topic we learned in that class to discuss on the blog. Thankfully, there's plenty to talk about since we learned more in class than the book discusses. For those that don't remember, we learned about neuroimaging techniques. These techniques are used to scan the brain for damage or research (i.e. what your brain does when it has schizophrenia, when it does a specific activity, etc.). The techniques discussed in the book is the CT (computed tomography) scan, the PET (position emission tomography)scan, the MRI (magnetic resonance imaging), and the fMRI (functional MRI). The ones I'm interested in, however, are the lesion and the EEG (electroencephalogram--what a mouthful!). What exactly are these techniques? Firstly, the lesion is basically research of natural or experimental damage to the brain in order to see what controls what. For instance, how are we supposed to know what part of the brain controls language unless we research the damage done to the brain when someone shows symptoms of misunderstanding language after an accident? The EEG basically measures the waves of electrical activity on the brain's surface. This technique is used to figure out how certain stimuli affect the brain so that we can learn which stimuli are more dangerous than others. This stuff has got me interested in figuring out which stimuli affect which parts of my brain. As long as it doesn't permanently damage my brain, I would actually be interested in participating in an experiment to see which stimuli affects my brain and how they do. Also, just a random, off topic note: if somebody was claustrophobic but went in for an MRI (in the enclosed one), would the results be biased because somebody's fear affects their brain activity? Just something I was curious about while learning about this stuff.