Answer to picture trivia question

[fleaplus]

I just realized that I never answered the trivia question I posted, asking people to guess what this apparatus does.

The answer is that it's a "Geodesic Photogrammetry System," used to localize electrodes for EEG experiments.

http://www.egi.com/gps_etal.html

Comments

[labcreatedamber]

Yeah, that is pretty freaky looking. Is it some kind of net they've draped over her head, or have they glued the electrodes to her hair?

Oh, and I was in a school-wide spelling bee in sixth grade, and the word I missed out on was "electroencephalograph". The kid who won had to spell the word "pearl".

[fleaplus]

Oh, it's probably a net that's draped over, although some people do things where they use gel to help keep it in place. In our lab we have a net which is soaked in water first, and the individual electrodes are able to somehow burrow themselves through the hair. I tried being an EEG subject for the first time the other day, and it wasn't too bad.