FIGURE 5.3. The responsiveness of NST gustatory neurons reflects not only sensory input from the taste receptors, but descending influences from forebrain circuits.

FIGURE 5.3

The responsiveness of NST gustatory neurons reflects not only sensory input from the taste receptors, but descending influences from forebrain circuits. Gustatory circuits in the rNST receive sensory input from cranial nerves VII, IX, and X. In rodents, taste information is then projected to the parabrachial nucleus (PBN) of the pons, which, in turn, routes gustatory information along a thalamocortical or ventral forebrain pathway. Taste information reaches the gustatory cortex (GC) via a projection from the PBN to the ventral posterior medial nucleus of the thalamus, parvocellular division (VPMpc). Structures in the ventral forebrain that receive input from the PBN include the bed nucleus of the stria terminalis (BST), central nucleus of the amygdala (Amyg), and the lateral hypothalamus (LH). The GC, BST, Amyg, and LH maintain descending connections with the brainstem and modulate taste processing in circuits in the NST.

From: Chapter 5, Neural Coding in the rNST

Cover of The Role of the Nucleus of the Solitary Tract in Gustatory Processing
The Role of the Nucleus of the Solitary Tract in Gustatory Processing.
Bradley RM, editor.
Boca Raton (FL): CRC Press/Taylor & Francis; 2007.
Copyright © 2007, Taylor & Francis Group, LLC.

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