Fixing the EEG headset

Sadly, the past few classes the EEG headset was not working. The sensors on the headset seemed to be not responding and connecting with the software. Although at first I thought it could be the computer, I've tried to make it work on other computers too and it still did not work. The first class I tried testing it on Leila but the connection was blinking and not responding properly so I was unable to collect any data. Moreover, I thought that the problem was in interference or a turned on bluetooth but turning off bluetooth did not help either. Finally, when I asked Dr. Wiecking to look at the headset, he said that the problem might have been in the fact that the sensors are sort of dirty and rusty and therefore are connecting poorly. After cleaning all the sensors with a brush (as you can see on the picture), I tried connecting the headset again and it worked!