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Chunk #47 — 3. Results — 3.2. Electrophysiologic data — 3.2.3. Randomization tests of topographic old/new effects

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Current source density (CSD) old/new effects during recognition memory for words and faces in schizophrenia and in healthy adults.
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The univariate max(T2) statistics for evaluating the task-related differences of these old/new effects also suggested similar early mid-frontal and mid-parietal old/new effects (factor 442) across tasks, as there were no significant sites for controls or patients (Figure 6G). However, the early inverted old/new effects at left frontolateral sites were significantly larger for words than faces for controls only (at F5, F7, both T2 > 22.5, both p < 0.01; at FC5, T2 = 15.4, p = 0.03). In contrast, the late medial centrooccipitoparietal old/new effects (factor 723; Figure 6H) were significantly larger for words than faces for controls, particularly over the left hemisphere (at P5, T2 = 29.4, p = 0.0002; at P3, T2 = 19.2, p = 0.004; at P7, PO7, P6, P8, all T2 > 14.6, all p < 0.05). Thus, there were no task-related old/new differences for patients, nor did the inverted late old/new effects differ between tasks.