FIGURE 1.
Schematic of major neuromodulatory systems. Cerebellar, spinal, and temporal projections are omitted for brevity. The inset shows the approximate anatomical location of each nucleus that sends major afferents to the forebrain.
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.