For the past 65 years many laboratories have studied oscillations of the local field potential in the olfactory

system.  I will briefly summarize what we know about the cellular correlates of olfactory system oscillations, and then I will describe recent research from the laboratory showing that high (>15 Hz) and low (<15 Hz) frequency oscillations represent several important behaviorally associated processes

in this system.  Study of these signals in awake, behaving animals gives us insight into system-level processing of sensory and perceptual information that may be unavailable at the single unit level.  Our results indicate that the system may have different operating modes dependent on the cognitive

demands of different commonly used laboratory tasks.