Figure 3.
RTN/pFRG and VII motor neuronal activity during AE. A–C, Three different neurons that were silent at rest, and rhythmic after induction of AE. Traces (top to bottom), VT, ∫ABDEMG, neuronal activity, and derived spikes. The shaded boxes demark late expiration. Calibration: 2 s. D, E, Photomicrographs of transverse sections of rat brainstem illustrating juxtacellular labeling of late expiratory neuron recorded shown in B (D, arrow) and VII motoneuron (E, arrow). The insets show higher magnification of neurons. Scale bars: D, E, 500 μm; D, E, insets, 100 μm.