Fig. 1.

Taste responses in parabrachial nucleus (PbN) vs. nucleus of the solitary tract (NTS) cells. A: proportion of PbN (left) and NTS (right) cells in awake rats that responded to different numbers of tastants. Most taste-responsive cells in the PbN and NTS in awake rats are broadly tuned across taste qualities. B: proportion of response type (excitatory, inhibitory, or mixed) for each taste stimulus in PbN (left) and NTS (right) cells. There is a preponderance of purely excitatory responses in the PbN compared with the NTS; there are also more inhibitory responses in the NTS compared with the PbN. MSG, monosodium glutamate. NTS data replotted from Roussin et al. (2012).