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Fig. 8. Effects of the selective GABAB agonist baclofen (0.5 µmol
l–1) on the lung burst frequency responses to hypoxia in (A)
the pre-metamorphic group and (B) adult group. Responses were measured under
control (drug-free) conditions (N=7, in each group) and in the
presence of baclofen (N=6, in each group). Note that in these
figures, the control data (grey symbols, broken lines) were transposed from
Fig. 1 to facilitate
comparisons. Trigeminal neurograms (
V, trigeminal nerve) presented below
show representative respiratory-related activity recorded under each
condition. Values are means ± s.e.m. *Values statistically
different from baseline at P<0.05.