Table 2.
MRI quality control parameters and performance for the in-scanner picture cue–target word identification task
| Measure | Discovery sample |
Confirmation sample |
||||
|---|---|---|---|---|---|---|
| Mean | SD | Range | Mean | SD | Range | |
| Average motion per brain volume (mm/TR) | 0.12 | 0.05 | 0.04–0.23 | 0.13 | 0.05 | 0.05–0.25 |
| Visual mismatch condition (print) | ||||||
| Number of trials in the beta series | 19.6 | 2.8 | 12–25 | 26.7 | 3.9 | 19–37 |
| Percent accuracy | 90.8 | 7.3 | 76–100 | 91.3 | 7.4 | 75–100 |
| Mean reaction time for correct trials | 1700 | 348 | 1159–3013 | 1479 | 355 | 989–2125 |
| SD of reaction time for correct trials | 506 | 203 | 181–1001 | 442 | 166 | 169–700 |
| Auditory mismatch condition (speech) | ||||||
| Number of trials in the beta series | 21.0 | 2.1 | 17–24 | 27.3 | 3.7 | 20–36 |
| Percent accuracy | 96.5 | 4.7 | 80–100 | 93.0 | 4.9 | 81–100 |
| Mean reaction time for correct trials | 1698 | 296 | 1121–2335 | 1419 | 237 | 1072–1933 |
| SD of reaction time for correct trials | 456 | 194 | 135–1015 | 373 | 123 | 171–633 |