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. Author manuscript; available in PMC: 2022 Jan 15.
Published in final edited form as: Neuroscience. 1999;91(1):391–400. doi: 10.1016/s0306-4522(98)00588-0

Table 1.

Sleep state durations in minutes and percentage sleep time, based on a continuous 48-h period of electroencephalogram, electro-oculogram and electromyogram telemetry recording, scored in 1-min epochs

State Hours/day Sleep time (%) Episode duration Episode range
Wake 9.7 — 25.1 ± 73.5 0.3–390
QS-M 4.8 33.8 13.1 ± 10.7 0.3–42.7
QS-H 1.4 9.9 7.7 ± 9.7 1.0–31
REM-M 7.2 50.6 12.1 ± 13.5 1.0–74
REM-H 0.8 5.7 7.81 ± 6.5 1.0–24.5

The criterion for REM-M and REM-H was more than one phasic event exceeding the mean phasic event amplitude per epoch.