Table 1.

The conditions which were investigated during phase 1 to optimize pharyngeal stimulation, at 20 % relative humidity

Condition	Air flow (L/min)	Temperature (°C)	Duration of stimulus (min)
1	12	12	15
2	12	12	5
3	12	12	10
4	12	12	20
5	12	12	25
6	6	12	15
7	8	12	15
8	10	12	15
9	14	12	15
10	12	4	15
11	12	6	15
12	12	8	15
13	12	10	15
14	12	15	15
15	12	18	15