Square or Sine: Finding a Waveform with High Success Rate of Eliciting SSVEP

Table 1

Statistic of harmonics in SSVEP.

	1𝑓 occurs	2𝑓 occurs	3𝑓 occurs	Valid trials	Total trials
11 Hz sine	20	10	7	22	29
13 Hz sine	22	9	2	22	30
15 Hz sine	23	8	5	25	33
18 Hz sine	23	9	6	25	34
22 Hz sine	19	12	1	20	26
11 Hz triangle	14	10	4	16	22
13 Hz triangle	19	10	0	19	21
15 Hz triangle	16	5	5	16	17
18 Hz triangle	17	6	2	17	21
22 Hz triangle	15	9	3	15	19
11 Hz 50% square	20	11	15	20	21
13 Hz 50% square	17	5	5	17	19
15 Hz 50% square	17	9	8	16	17
18 Hz 50% square	18	9	8	19	19
22 Hz 50% square	18	9	8	18	19
11 Hz 25% square	11	9	5	11	15
13 Hz 25% square	17	8	6	18	18
15 Hz 25% square	7	7	7	10	15
18 Hz 25% square	17	14	10	18	18
22 Hz 25% square	15	15	10	18	18
11 Hz 10% square	8	9	4	12	17
13 Hz 10% square	13	13	6	17	17
15 Hz 10% square	15	12	11	19	20
18 Hz 10% square	16	9	10	20	21
22 Hz 10% square	13	6	6	15	19