We use cookies and other tools to enhance your experience on our website and to analyze our web traffic.
For more information about these cookies and the data collected, please refer to our
Privacy Policy.
6.6.2.2 Sleep onset Sleep onset is defined by three
...
software report identifies sleep onset as three consecutive epochs
...
the identity of sleep onset, sleep time, and sleep
...
...
only exception being when onset of sleep occurs prior
...
be set at the onset of sleep. Sleep latency
...
on) prior to the onset of sleep. - Turning
...
avgspo2baseline_f1t3
under
Sleep Monitoring/Polysomnography/Administrative
in
NUMOM2B variables
The EDF and XML annotation files from the nuMoM2b sleep substudy were imported in Matlab for analysis of baseline SpO2 (oxygen saturation). First step involved identification of the initial sleep onset (stage=2). Sixty seconds of wake data preceding the initial sleep onset was identified as the baseline segment for calculation of average SpO2. If 60s of wake data was not present, 30s was used as the baseline segment. Average value of SpO2 signal was calculated at this baseline segment. If there was no usable SpO2 signal or baseline wake data before sleep onset, then baseline SpO2 is missing. A few subjects had less than 90% SpO2 at baseline either due to signal distortion/artifacts or baseline desaturation events and were marked as missing.
...
the interval between sleep onset and sleep offset while
...
polysomnography nsrr_ttldurws_f1Wake After Sleep Onset: the total duration being awake between sleep onset and lights-on/out-bed time from
...
lights-out/in-bed time and sleep onset from polysomnography nsrr_ttlprdbd_f1Total In-bed
...
slpeffp
under
Sleep Monitoring/Polysomnography/Sleep Architecture
in
CHAT variables
Sleep duration is the interval between sleep onset time and lights on/out-bed time while asleep (i.e. total sleep time, TST), while in-bed period is the interval between lights off/in-bed time and lights on/out-bed time (i.e. time in bed, TIB). [(Total Sleep Time (TST)) / (time from sleep onset to morning waking)] * 100 (data can be inaccurate if scorer has not set sleep onset rule properly in compumedics software)
rls_probability
under
Clinical Data/Sleep Disorder
in
APOE variables
Control when :rls_sleep_onset: = 1, 2, or 3 and :rls_disturbed_sleep: = 1 or 2; Probable when :rls_sleep_onset: = 4 or 5 and :rls_disturbed_sleep: = 3; Definite when :rls_sleep_onset: = 4 or 5 and :rls_disturbed_sleep: = 4 or 5; Possible when any other combination
...
the recording to sleep onset". This applies to STLOUTP
...
"lights out" and "sleep onset". If "lights out" was
...
at 22:00:00 and sleep onset was at 22:30:00 then
...
...
is marked ... Sleep onset is marked With "..."
...
same epoch as "sleep onset", which makes the "sleep
...
lights off, and sleep onset should be simultaneous. These
...
...
lights off/on and sleep onset data were reliable. SLPEFFP
...
the marking of sleep onset. SLPLATP is the number
...
lights off and sleep onset. Having a "STONSETP much
...
Good question - sleep onset latency is difficult to
...
software used a sleep onset detection method of "5
...
consider is to recompute onset latency from the epoch-by-epoch
...
...
"truer" estimates of sleep onset latency. For instance, a
...
immobile time" for sleep onset, thus giving ~30 minutes of sleep onset latency for that night.
...
...
electromyography signals). Therefore, sleep onset and offset and periods
...
the period between sleep onset and offset. Sleep onset is identified based on
...
cmedapiabdo2
under
Sleep Monitoring/Polysomnography
in
CFS variables
The Apnea Propensity Index (API) is a novel measure of breathing variability based on the abdominal effort channel and optimized around the first sleep onset.
cmedapiabdo3
under
Sleep Monitoring/Polysomnography
in
CFS variables
The Apnea Propensity Index (API) is a novel measure of breathing variability based on the abdominal effort channel and optimized around the first sleep onset.
sawa109
under
Sleep Monitoring/Actigraphy
in
HCHS variables
Sleep maintenance efficiency is the ratio between sleep duration (i.e. total sleep time, tst) and sleep period in main sleep. Sleep duration is the interval between sleep onset time and sleep offset time while asleep, while sleep period is the interval between sleep onset time and sleep offset time. This variable is similar to variable sawa34; however, sawa34 is derived from Actiware variable sawa24 before data optimization.