Table 3. Changes in frequency-domain features across six consecutive PVT blocks (x̄±s)
| Frequency-domain features |
Block 1 |
Block 2 |
Block 3 |
Block 4 |
Block 5 |
Block 6 |
| Total
power |
2051.4
± 1632.3 |
2004.2
± 1422.2 |
2193.6
± 1620.0 |
2197.9
± 1503.4 |
2416.0
± 1826.2 |
2253.6
± 1583.0 |
| peakVLF |
0.04 ±
0 |
0.04 ±
0 |
0.03 ±
0 |
0.04 ±
0 |
0.04 ±
0 |
0.04 ±
0 |
| peakLF |
0.09 ±
0.02 |
0.08 ±
0.02 |
0.08 ±
0.02 |
0.08 ±
0.02 |
0.08 ±
0.02 |
0.08 ±
0.02 |
| peakHF |
0.23 ±
0.07 |
0.23 ±
0.08 |
0.22 ±
0.07 |
0.22 ±
0.07 |
0.22 ±
0.07 |
0.22 ±
0.07 |
| aVLF |
123.56
± 111.66 |
143.77
± 104.6 |
172.25
± 142.8 |
170.81
± 124.67 |
186.22
± 143.83 |
164.45
± 108.56 |
| aLF |
1215.7
± 899.1 |
1276.4
± 863.7 |
1395.4
± 905.4 |
1409.0
± 914.5 |
1512.0
± 982.3 |
1493.6
± 1126.1 |
| aHF |
710.96
± 932.5 |
583.0 ±
690.3 |
624.6 ±
827.3 |
616.6 ±
661.1 |
716.1 ±
938.5 |
594.6 ±
592.34 |
| VLF(log) |
4.48 ±
0.83 |
4.71 ±
0.76 |
4.88 ±
0.73 |
4.92 ±
0.68 |
4.97 ±
0.72 |
4.88 ±
0.7 |
| LF(log) |
6.84 ±
0.77 |
6.94 ±
0.69 |
7.01 ±
0.74 |
7.05 ±
0.66 |
7.12 ±
0.66 |
7.05 ±
0.74 |
| HF(log) |
6.11 ±
0.97 |
5.97 ±
0.87 |
6.01 ±
0.89 |
6.05 ±
0.86 |
6.08 ±
0.96 |
6.04 ±
0.84 |
| VLF |
7.25 ±
5.03 |
8.11 ±
4.79 |
9.11 ±
5.38 |
8.43 ±
4.03 |
8.96 ±
5.25 |
8.49 ±
4.5 |
| LF |
60.91 ±
13.5 |
64.83 ±
12.35 |
65.01 ±
11.28 |
65.09 ±
12.15 |
65.63 ±
12.14 |
65.29 ±
12.78 |
| HF |
31.79 ±
15.29 |
27.01 ±
12.68 |
25.83 ±
12 |
26.42 ±
13.16 |
25.36 ±
12.76 |
26.17 ±
12.04 |
| LF
norm |
66.03 ±
15.42 |
70.67 ±
13.33 |
71.72 ±
12.53 |
71.29 ±
13.78 |
72.26 ±
13.29 |
71.31 ±
13.23 |
| HF
norm |
33.92 ±
15.4 |
29.28 ±
13.31 |
28.22 ±
12.48 |
28.65 ±
13.73 |
27.68 ±
13.25 |
28.65 ±
13.21 |
| LF/HF |
2.6 ±
1.64 |
3.29 ±
2.37 |
3.22 ±
1.86 |
3.43 ±
2.41 |
3.44 ±
2.1 |
3.47 ±
2.59 |
