Duration (seconds) of speech across the five tasks
| Task | Mean | SD | Range |
|---|---|---|---|
| Routes | 55.62 | 11.08 | 36 –75 |
| Landmarks | 58.23 | 7.76 | 43 –70 |
| Film plots | 58.14 | 7.92 | 43 –70 |
| Film frames | 56.36 | 8.78 | 36 –68 |
| Baseline number repetition | 63.86 | 6.23 | 53 –76 |
Means were calculated across the 22 scan acquisitions (two per subject) for each of the five tasks after data were digitally analyzed. Means represent the number of seconds when speech output occurred during the total 90 sec of scan acquisition.