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. 2001 Apr 15;21(8):2610–2621. doi: 10.1523/JNEUROSCI.21-08-02610.2001

Fig. 8.

Fig. 8.

Distribution of SWS in baseline and the time course of SWS delta power during the main sleep periods of the 25 BXD-RI strains tested. The SWS distribution (gray area) represents a 2 hr moving average of percentage recording time with a 15 min resolution (4–7 per strain). Delta power values (black dots connected with thick lines) represent means over consecutive 225 4 sec epochs scored as SWS. Only delta power values for SWS occurring within the main sleep period(s) are depicted. One to two major sleep periods were determined per mouse according to the SWS distribution (see Materials and Methods). The initial delta power values of these sleep periods were used in the QTL analysis. The number in the top right-hand corner of each panel indicates the BXD-RI strain ID. The progenitor strains, B6 and D2, are indicated on the bottom row. Data in the dark period are displayed twice to visualize the dark-to-light transition.