Table 1.

Baseline hypoglossal burst parameters from WT and Lmx1b^f/f/p rhythmic medullary slices

Genotype	n	Frequency, bursts/min	Duration, s	CV IBI
WT	19	9.2 ± 0.9	0.66 ± 0.4	0.28 ± 0.024
Lmx1bf/f/p	21	6.8 ± 0.5	0.68 ± 0.2	0.44 ± 0.026*

Data are means ± SE for values in wild-type (WT) and Lmx1b^f/f/p (lacking 5-HT neurons) mouse strains. A t-test (

^*P < 0.001) or Mann-Whitney rank sum test was used, as appropriate, to determine a statistically significant difference compared with WT.

CV IBI, coefficient of variation of the interburst interval.