Skip to main content
. Author manuscript; available in PMC: 2015 Dec 1.
Published in final edited form as: Curr Opin Insect Sci. 2014 Nov 6;6:99–103. doi: 10.1016/j.cois.2014.10.009

Figure 2.

Figure 2

Sparsening and decorrelation. Left: PNs (4 examples shown here) are spontaneously active and respond to odors with bursts of temporally-patterned spikes. Different odors (light gray bar at left, dark gray bar at right) elicit different patterns of activity. The responses of the PN population can be visualized as clouds of points (here, in a 2-dimensional space). Right: KCs, by contrast, are nearly silent at rest and respond to odors with great specificity, and with only a few spikes. Sparsening and decorrelation mechanisms separate the responses of KCs elicited by different odors, making them easy to distinguish.