Table 1 Parameters and appearances of eight classes of stable SEP t-f components. The values of parameters are given as mean ± SD (CV).
From: Time-frequency component analysis of somatosensory evoked potentials in rats
Class | A | B | C | D |
|---|---|---|---|---|
Latency t (ms) | 37.35 ± 10.60 (28) | 35.34 ± 9.33 (26) | 75.83 ± 7.03 (9) | 15.37 ± 10.61 (69) |
Frequency f (Hz) | 30.04 ± 12.54 (42) | 64.63 ± 21.27 (33) | 20.75 ± 9.17 (44) | 126.31 ± 25.04 (20) |
Time span s (ms) | 41.03 ± 17.69 (43) | 29.72 ± 14.65 (49) | 52.46 ± 32.47 (62) | 25.93 ± 15.77 (61) |
Phase φ (rad) | 0.07 ± 0.02 (--) | -0.05 ± 0.02 (--) | -0.01 ± 0.03 (--) | 0.01 ± 0.02 (--) |
Amplitude a (μ V) | 2.18 ± 1.14 (52) | 0.50 ± 0.28 (56) | 0.75 ± 0.30 (40) | 0.10 ± 0.06 (60) |
Relative Energy (%) | 60.67 ± 12.72 (21) | 7.50 ± 5.03 (67) | 10.03 ± 4.80 (48) | 0.43 ± 0.20 (47) |
Appearances | 25 | 18 | 14 | 15 |
Appearance Rate (%) | 89.29 | 64.29 | 50.00 | 53.57 |
Class | E | F | G | H |
Latency t (ms) | 24.38 ± 6.75 (28) | 48.12 ± 5.22 (11) | 71.46 ± 6.05 (8) | 89.63 ± 5.36 (6) |
Frequency f (Hz) | 30.60 ± 11.87 (39) | 35.04 ± 12.28 (35) | 28.77 ± 14.10 (49) | 28.29 ± 13.87 (49) |
Time span s (ms) | 21.96 ± 14.67 (67) | 11.90 ± 8.78 (74) | 18.15 ± 12.81 (71) | 13.21 ± 9.66 (73) |
Phase φ (rad) | -0.02 ± 0.04 (--) | -0.08 ± 0.02 (--) | -0.03 ± 0.06 (--) | -0.04 ± 0.03 (--) |
Amplitude a (μ V) | 0.07 ± 0.03 (43) | 0.13 ± 0.08 (62) | 0.06 ± 0.03 (50) | 0.11 ± 0.08 (73) |
Relative Energy (%) | 0.12 ± 0.10 (83) | 0.20 ± 0.13 (65) | 0.09 ± 0.08 (89) | 0.25 ± 0.15 (60) |
Appearances | 16 | 14 | 17 | 15 |
Appearance Rate (%) | 57.14 | 50.00 | 60.71 | 53.57 |