Labeling

The last two classes, we were sorting out all headsets and labeling them. It happened to be that a lot of USBs and headsets were mislabeled or not labeled at all, so we decided to try them all out and see which USBs match with which headsets. We had figured out that USBs can be divided into two groups: EPOC and EEG; this means that any of EPOC USBs can work for an EPOC headset and any EEG USB can work for EEG headset. After we have divided all USBs into two piles, we now had to figure out which ones are EEG and which ones are EPOC. To figure that out, we had to try one of the headsets that go with one group of USBs and see what kind of data it shows. We knew that the EEG headset filters out more artifacts than EPOC headset. Now we had to come up with a way of recognizing which one is EEG and which one is EPOC. We came up with a way of telling whether it is EEG or EPOC with a simple method: the headset was put on and the person wearing the headset tried to keep his head as still as possible and close their eyes. If the data showed perfectly straight lines from all the sensors that means it is EEG because it had filtered out the minor outside factors. However, if the data still showed data with no so straight lines and showed occasional bumps in data, that means it is EPOC, which has not filtered out everything minor.