Table 1. Experimental design of the breathing conditions employed during scanning.
Condition Name | Tidal Volume | Respiratory Rate (min−1) | Length (min) | Condition Description |
---|---|---|---|---|
FREE1 | - | - | 1 | Free breathing |
NORMAL 1 | 1x | 15 | 1 | Paced normal breathing |
RAPID1 | 1x | 24 | 1 | Paced rapid breathing |
DEEP1 | 2x | 12 | 1 | Paced deep breathing |
RAPID&DEEP | 2x | 25 | 1 | Paced rapid and deep breathing |
DEEP2 | 2x | 12 | 1 | Paced deep breathing |
RAPID2 | 1x | 24 | 1 | Paced rapid breathing |
NORMAL2 | 1x | 15 | 1 | Paced normal breathing |
FREE2 | - | - | 2.5 | Free breathing |