Fig. 6.
A, Sixty second application of GABA (1 mm) over the PMN pool nearly abolished ∫C4 population inspiratory activity in a P1 rat. B, Pooled data showing the dose-dependent reduction in ∫C4 burst amplitude (expressed as percentage of control amplitude) produced by 10, 30, and 60 sec applications of 1 mm GABA over the C4 motoneuron pool (n = 5; mean ± SE).