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. Author manuscript; available in PMC: 2008 Jul 23.
Published in final edited form as: Neuroscience. 2008 Mar 19;153(3):605–617. doi: 10.1016/j.neuroscience.2008.02.076

Fig. 4.

Fig. 4

A typical tracing of extracellular neuronal recording in a barodenervated rat. The firing of the mNTS neuron was increased by direct application of L-Glu (5 mM, 4 nl) (A), electrical stimulation of the ipsilateral aortic nerve (B), and microinjection of NMDA (10 mM, 20 nl) into the ipsilateral PVN (C). Direct application of NBQX (2 mM, 4 nl) and D-AP7 (5 mM, 4 nl) abolished the neuronal firing (D). Within 10 sec, NMDA (10 mM, 20 nl) was again microinjected into the PVN; no excitation was observed due to ionotropic glutamate receptor blockade of the mNTS neuron (E; compare with C). After 5 min, NMDA (10 mM, 20 nl) was again microinjected into the PVN; the excitation of the neuron resumed (F, compare with C).