Table 5. Comparison between initial-dip-window and HR-window.

Subjects	Classification accuracies (%)
	Initial dip based (0~2.5 sec window)	HR based (2~7 sec window)
1	73.3	86.6
2	53.3	53.3
3	60	66.6
4	46.6	53.3
5	40	40
6	40	66.6
7	66.6	66.6
8	80	86.6
mean	57.5 ± 14.9	64.9 ± 16.2