Okay for those of you who were curious about my first net-putting experience: it didn't happen today. I did help Serena to put it on though and afterwards I also helped her to make the electrodes more soaked if their impedances looked red! Everything has a start :)
We had a small problem before the experiment started: The EEG from some electrodes, approximately 5, looked not so straight as the other ones. It looked like they were picking some noise from somewhere, but we didn't know why. Since this was only a pilot and it was only few electrodes we didn't worry that much. PJ will check the problem soon though. I will let you know when I learn why that was. Oh and apperantly the EEG also looks weird if the subject is touching a metal, like the legs of a table or something.
After we were done, I soaked the net in clean water 3 times and then soaked in a solution and again soaked it in clean water 3 times. Then we hanged the net.
Hopefully next time we will run a real subject, but before that I am planning to aggregate this subject's data and tell you about how I did that :) Should be fun!
Thursday, May 21, 2009
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