Table 1.
Number of Volunteers Receiving Each Gas Stimulus Paradigm
| Gas 1 | Gas 2 | Number of subjects | |
|---|---|---|---|
| Stimulus 1 | Air | ‘Carbogen‐light’ | 9 |
| Stimulus 2 | Oxygen | ‘Carbogen‐light’ | 8 |
| Stimulus 3 | Air | Carbogen | 9 |
| Stimulus 4 | Oxygen | Carbogen | 10 |
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