Categorisation of Mobile EEG: A Researcher’s Perspective

Table 6

System specification scores.

System attribute^1	Scores
	1	2	3	4	5
Bit resolution (bits)	14	16	22	24	>24
Sampling rate (Hz)	125 or 128	250 or 256	500 or 512	1000 or 1024	>1000
Battery life (hours)	Mains, USB or equivalent	1 to 8	9 to 16	17 to 24	>24

A score of 1–5 is given separately for each system attribute and summed, along with the score for electrode type from Table 5, to give a single total score (minimum score = 4; maximum score = 20).