One of the benefits of having a list of the latest General Accounting Office’s reports pop up daily in my inbox is that I occasionally run across things which are… interesting. Here’s one of them:
That’s an Adobe Acrobat file, but since it’s a public document I can quote lavishly. Check it:
That’s totally whack, no? I haven’t read the whole thing, but later on the introduction mentions that this device isn’t very useful yet as an investigative or screening tool, but others think it may have potential.
Anyway, I thought you folks might like to learn a little about this interesting technique.
I think this is basically an extension of the phenomena discussed in this thread over in IMHO. In that thread, ianzin is asking for opinions on the plausibility of guessing a number a person is thinking given certain physiological clues. The EEG used in this “brain fingerprinting” is just another way to gather information about a person’s response to stimuli.
There are a lot more precise methods being investigated which use functional MRI and other techniques to determine exactly which part of a person’s brain is active during a given task. It’s been demonstrated that a person uses a different part of their brain when looking at pictures they’re familiar with than they do when looking at unfamiliar scenes, and this can be used to determine whether a person has seen something they claim to have seen or vice versa. However, shoving a suspect into an MRI tunnel isn’t as practical as using an EEG.