Figure 7. Common afferent modality convergence in the NTS.

Distension-insensitive (DIS) NTS neurones typically received convergent inputs from peripheral chemoreceptors but not baroreceptors. Conversely, distension-sensitive neurones (DS) failed to respond to chemoreceptor activation but were consistently driven following baroreceptor stimulation. All DIS and all but 2 DS neurones could also be driven by veratridine stimulation of cardiac receptors. Not all DIS and DS cells were tested for synaptic inputs from chemo- and baroreceptors.