Table 1.
Healthy | Schizophrenia | |||||
---|---|---|---|---|---|---|
Task Measures | passive | auditory attention | visual attention | passive | auditory attention | visual attention |
P50 S1 amplitude (μV) | 3.35 (2.36) | 4.27 (2.39) | 3.83 (2.24) | 2.51 (1.40) | 3.64 (2.30) | 2.78 (2.32) |
P50 S2 amplitude (μV) | 1.82 (1.83) | 2.49 (2.03) | 2.55 (2.86) | 2.25 (2.03) | 1.78 (1.52) | 2.00 (1.26) |
P50 ratio (S2/S1 × 100) | 62.80 (50.47) | 59.13 (25.1) | 64.96 (50.24) | 88.21 (47.05) | 70.76 (67.61) | 99.55 (65.28) |
N100 S1 amplitude (μV) | 12.38 (5.93) | 12.18 (6.41) | 12.39 (5.66) | 8.49 * (3.14) | 8.48 (3.15) | 6.71 ** (3.91) |
N100 S2 amplitude (μV) | 6.28 (4.39) | 6.65 (3.31) | 6.13 (3.99) | 3.48 (1.21) | 4.84 (2.73) | 4.81 (1.70) |
N100 ratio (S2/S1 × 100) | 43.12 (17.87) | 59.80 (29.87) | 49.39 (16.95) | 44.76 (18.28) | 62.86 (43.76) | 89.06 * (54.25) |
P200 S1 amplitude (μV) | 19.38 (10.46) | 17.93 (8.89) | 18.43 (11.76) | 13.42 * (4.70) | 12.79 (4.46) | 11.02 (4.31) |
P200 S2 amplitude (μV) | 8.71 (4.47) | 11.85 (4.90) | 7.94 (4.93) | 6.67 (2.15) | 9.25 (3.52) | 6.56 (1.82) |
P200 ratio (S2/S1 × 100) | 46.72 (14.56) | 69.99 (19.82) | 48.58 (20.13) | 53.52 (19.25) | 76.55 (31.39) | 69.62 (38.93) |
p<0.05,
p<0.01 (independent samples t-tests between groups)