Table 1.

Number of segments by category

Category	Mean (SD)	Range	Total (%)
Artifact-Free	75.6 (19.7)	36 – 113	2269 (51.0)
Blink	11.8 (7.3)	1 – 29	353 (7.9)
Saccade	18.6 (14.7)	2 – 57	557 (12.5)
EMG	24.5 (29.2)	2 – 152	735 (16.5)
Other	17.8 (13.8)	2 – 63	534 (12.0)
Total	148.3 (41.0)	117 – 315	4448

Mean (with standard deviation in parentheses), range in number of segments contributed by subjects, and the total number of segments per category (with the percent of all segments) for each category. Of note, the relatively high number of saccades is due to the bouncing of bubbles in the video shown during EEG acquisition.