Table 1

SOREMS episodes, episodes of NLMT, slow wave activity


Night sleep
Morning sleep

SOREMS episodes
Number/total number of sleep episodes
1/63
40/63
Duration [min], mean ± SEM, n = 14

12.8 ± 2.8
Latency [min], mean ± SEM, n = 14

7.6 ± 1.3
Frequency of epochs of NLMT (n = 16)
Number/number of epochs of NREMS [%]
19.7 ± 3.1
36.2 ± 5.0*
Episodes of NLMT at sleep onset
Number/total number of sleep episodes without SOREMS
22/62
14/23
Duration [min], mean ± SEM
19.2+6.6 (n = 12)
19.9 ± 6.3 (n = 7)
Latency [min], mean ± SEM
6.4 ± 1.2 (n = 12)
1.5 ± 0.5 (n = 7)
Slow-wave activity (n = 16)
SWA [μV2] mean ± SEM
552.6 ± 42.3
361.3 ± 33.7**
SWE [μV2s] mean ± SEM
39772.3 ± 4220.0
20293.7 ± 1853.0**

SOREMS: Sleep Onset REMS episodes (REMS episodes with latency < 20 min). NLMT: NREMS with low muscle tone. For NLMT at sleep onset, only sleep episodes without SOREMS were considered. SWA: mean slow wave activity (EEG power in the 0.75 – 4.5 Hz range) in the first NREMS episode. SWE: slow wave energy (cumulative SWA in NREMS) in the first NREMS episode.

* p < 0.01, ** p < 0.001; comparison of night and morning sleep episodes by paired t-tests

Tinguely et al. BMC Neuroscience 2006 7:2   doi:10.1186/1471-2202-7-2