Table 1.
Discharge pattern, bulbospinal projection, primary offset feature in phrenic spike-triggered averages, and changes in peak firing rate of BÖT/rVRG and i-cVRG neurones during cough
| BÖT/rVRG | i-cVRG | |||||||
|---|---|---|---|---|---|---|---|---|
| n | BS | PHR-STA | CG | n | BS | PHR-STA | CG | |
| I-Aug | 32 | 9/25 | 5sp, 12mp | 32↑ | 43 | 24/39 | 12sp, 6mp | 43↑ |
| I-Dec | 28 | 1/23 | 4mp | 23↑,1↓, 4→ | 17 | 5/10 | 4mp | 15↑,2→ |
| I-Plat | 5 | 0/5 | 2sp,1mp | 1↑, 4→ | 7 | 3/7 | 2mp | 7↑ |
| I-E/I | 11 | 1/6 | 2mp | 9↑, 2→ | 8 | 0/7 | — | 7↑,1→ |
| I-I/E | — | — | — | — | 3 | 0/3 | — | 3↑ |
| I-Other | 19 | 0/8 | 1sp | 8↑,3↓, 8→ | 18 | 1/8 | — | 8↑, 10→ |
| E-Aug | 28 | 1/20 | 2t | 19↑, 9→ | 35 | 8/25 | 2t | 32↑,3↓ |
| E-Dec | 21 | 0/18 | 1t | 15↑,5↓,1→ | 36 | 2/22 | — | 29↑,3↓,4→ |
| E-I/E | 6 | 0/5 | — | 4↑, 2→ | 3 | 0/3 | — | 3↑ |
| E-Other | 10 | 0/8 | — | 8↑,2↓ | 6 | 1/5 | — | 4↑,2↓ |
| E-Recruit | 4 | 0/3 | — | 4↑ | 12 | 2/5 | — | 12↑ |
| NRM | 40 | — | — | 4↑, 36→ | 29 | — | — | 5↑, 24→ |
| Total | 204 | 216 | ||||||
Neurones are classified as expiratory (E) or inspiratory (I), and augmenting (Aug), decrementing (Dec), other, plateau (Plat), phase spanning (I/E, E/I), recruited (Recruit), or nonrespiratory modulated (NRM). n, number of neurones; BS, results of bulbospinal identification; PHRSTA, results of spike-triggered averaging with phrenic nerve efferent activity (sp, short-duration peaks; mp, medium-duration peaks; t, troughs); CG, neurone peak firing rate changes during cough (↑, increase; ↓, decrease; →, no change). The denominator in column BS represents the number of cells tested. The recording domains are fully defined in the text.