Research Article
Abnormal N400 Semantic Priming Effect May Reflect Psychopathological Processes in Schizophrenia: A Twin Study
Table 3
Behavioral and EEG measures: mean values (standard deviation).
| | Measure | Concordant affected | Discordant affected | Discordant unaffected | Concordant healthy |
| | Number of correct responses | | | | | | Nonrelated | 34.6 (1.3) | 35.2 (1.4) | 35.1 (1.0) | 35.1 (1.5) | | Indirectly related | 34.6 (2.2) | 35.6 (0.7) | 35.7 (0.5) | 35.6 (1.2) | | Directly related | 34.8 (1.9) | 35.8 (0.4) | 35.6 (0.7) | 35.8 (0.7) | | Reaction time priming effect (ms) | | | | | | Directly related | 122.0 (81.3) | 124.0 (69.4) | 126.6 (75.0) | 120.9 (42.3) | | Indirectly related | 84.3 (49.7) | 59.5 (42.2) | 52.5 (49.7) | 68.1 (42.4) | | N400 amplitudes (μV) | | | | | | Nonrelated | 4.1 (3.9) | 5.1 (6.9) | 2.4 (6.2) | 2.1 (7.3) | | Indirectly related | 4.9 (5.2) | 4.6 (6.6) | 2.7 (5.8) | 3.4 (5.4) | | Directly related | 4.3 (3.2) | 7.1 (6.4) | 6.2 (6.2) | 6.3 (5.9) | | N400 priming effect (μV) | | | | | | Directly related | −0.2 (2.8) | −2.1 (3.8) | −3.7 (3.5) | −4.3 (3.1) | | Indirectly related | −0.7 (2.6) | 0.4 (2.7) | −0.3 (1.2) | −1.3 (3.5) |
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