A Hybrid Brain-Computer Interface-Based Mail Client

Table 1

Results of online experiment. Each trial of this experiment includes 9 operations as shown in Figure 8. “No. selections” is the average number of selections performed in a trial, “No. characters” is the average number of actual input characters for text input, “Spelling time” is the average time for text input, and “Trial time” is the average time for a complete trial.

Subject	No. trials	No. selections	No. characters	Spelling time (s)	Trial time (s)
S1	5	8.0	8.2	101.33	414.62
S2	5	8.8	7.2	99.68	444.14
S3	5	8.25	8.0	96.88	422.10
S4	5	9.0	7.4	82.05	448.20
S5	5	8.8	7.8	94.41	444.28
S6	5	8.0	7.8	102.52	430.87
Average	5	8.48	7.73	96.15	434.04