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.
Motifs considered in the analysis
a NFB loop
b IFF loop. Both systems involve complementary regulation of an excitation (E) signal by an external signal (U) and an inhibitory signal (I). The only difference is the way that the inhibition is activated. In the NFB topology, this comes from the excitation. In the IFF loop, this is direct from the external stimulus
