6.2.2 Experiment Two: Noise Sensitivity
Figure 6.9 shows a noise sample, with the respective frequency spectrum in figure 6.10. When compared to the figures 6.5 and 6.6 of the blink sample, they are
quite similar. This sample was taken when the forehead of the test person was
tapped with a finger. Other movements like jumping, turning the head, nodding
also gave similar noise samples. This particular sample was classified as a blink.