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. 1999 Oct 1;19(19):8656–8664. doi: 10.1523/JNEUROSCI.19-19-08656.1999

Fig. 6.

Fig. 6.

Amounts of PS during recovery from the 1 hr restraint stress in CONT and PNS rats. Top, Mean (± SEM) PS values (percentage of total recording time) under baseline and recovery conditions in the light (left panel) and the dark (right panel) phases. Under both baseline and recovery conditions, PNS rats had higher PS levels during the light phase compared to CONT rats (•p < 0.05;••p < 0.01;•••p < 0.001, two-tailed unpaired Student’s t test). During recovery sleep, a significant PS increase was observed in both groups during the light and the dark phase, as compared to their own baseline values (*p < 0.05; **p < 0.01; ***p < 0.001; two-tailed paired Student’st test). Bottom, Mean (± SEM) values of PS increase during recovery in the light and the dark phase are expressed as percentage of baseline values in each group. The magnitude of PS increase in the light phase was significantly lower in PNS compared to CONT rats (p = 0.0234; unpaired two-tailed Student’s t test).