highly significantP = 0.002
Finally, consistent with this selective context-memory order-effect, a highly significant correlation was identified between context-memory retention for List2 information in the Nap-group and prior stage-2 NREM sleep ( r = 0.77, P = 0.002, Figure 4D ), yet no such association between context-memory for List1 information and stage-2 NREM was observed ( r = 0.16, P = 0.60, Figure 4B ).