A Hybrid Brain-Computer Interface-Based Mail Client

Table 2

Scores of the NASA-TLX rating scales given by the subjects after using the BCI mail client.

Subjects	Mental demand	Physical demand	Temporal demand	Performance	Effort	Frustration
S1	25	10	40	25	30	10
S2	30	10	60	30	40	30
S3	10	0	50	25	35	20
S4	10	5	10	10	10	15
S5	60	10	60	75	75	10
S6	30	15	35	20	35	25
Average	27.5	8.3	42.5	30.8	37.5	18.3
STD	18.4	7.3	18.9	22.7	21.2	8.2