Figure 10. Respiration-related nerve activity in wild-type mice.

A, facial nerve, C4 and L1 activities in a wild-type mouse in the presence of 0.1 μm adrenaline. A′, faster sweep representation of nerve activity at the black bar in A. B, averaged nerve activity triggered by C4 (10 cycles). Note the clear preinspiratory activity in the facial nerve and L1 recordings. VII, facial nerve activity; C4, C4 inspiratory activity; L1, first lumbar ventral root activity. More irregular activity (in the same preparation) in the absence of adrenaline is shown in Supplemental Fig. 2.