highly significantp < 0.05
The decrease in glucose concentrations following spindles was likewise observed in the peri-event correlation histograms, which revealed a highly significant decrease in glucose concentration averaging ~0.24 mg/dL between 1 and 6 minutes following the onset of a spindle event (t[17] < −2.18, p < 0.05, for the 1–6 minutes post spindle onset interval; Figure 1C ) which persisted up to 6 minutes after spindle onset (6 minutes, −0.33 ± 0.13 mg/dL, t[17] = −2.33, and p = 0.032).