Figure 6.

SWD bursts and reward in LE rats (n = 5) with food deprivation. A, Preemptive first checks were apparent in the first seconds following SWD bursts (arrow) but before reward. There was also an increase in first checks following reward, presumably due to the sound of pellet drop. B, Preemptive checking rates (pre) were significantly greater than those seen during either SWDs or during the interburst interval, as were rates postreward. C, SWD durations were significantly shorter during the two reward periods (red) compared with the two no-reward periods (blue).