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.

Search

Sleep Heart Health Study
... totally obscured by EMG artifact are considered an arousal ... is assumed to be artifact and not an arousal. ... EEG frequency from EMG artifact (esp. in delta sleep). ...
Sleep Heart Health Study
... unreliable because of EEG artifact (usually due to the respiratory artifact on the EEG). - ... EOG) (QSFigure 2d). TIP:Alpha artifact was more likely than ... as a O2 sat artifact - on airflow and ...
Reply by DennisDean on July 28, 2014 on Forum
The artifact detection method used in ... thresholds are identified as artifact and excluded from summary ... epochs which are 'clearly' artifact. The approach can be ...
artifact under Polysomnography/Signal Quality in CFS variables
Total minutes of unscorable (artifact) data
artifact under Sleep/Polysomnography (PSG)/Signal Quality in CHAT variables
Total minutes of unscorable (artifact) data
artifact_f1t3 under Sleep Monitoring/Polysomnography/Administrative in NUMOM2B variables
Sleep Heart Health Study
... of increased EMG causing artifact in the EEG channels ... frequencies are result of artifact (like a sudden increase ... not the result of artifact, an arousal is scored. ...
Childhood Adenotonsillectomy Trial
... total duration of useable (artifact free, scorable) signals across ... identifies studies where underlying artifact of background EEG made ... easily scorable and mostly artifact free. Signals with grades ...
stg2stg3pr under Sleep/Polysomnography (PSG)/Signal Quality in CHAT variables
1=sleep staging problem - scoring stage2/stage3-4 unreliable (when distinction between Stage 2 and Deep Sleep is unreliable because of EEG artifact (usually due to the respiratory or sweat artifact on the EEG, and High Pass filter =1Hz used))
artifact under Polysomnography (PSG)/Respiratory Events in SOF variables
Sleep Heart Health Study
... inductance channels appear mostly artifact free, the inductance channels ... are missing or contain artifact are considered “obstructive.”) (ResFigure ...
Sleep Heart Health Study
... EEG frequency from EMG artifact - ArFigures 4a, 4b, ... QSFigures 2d - Alpha-like artifact - QSFigures 3a, 3b, ...
Reply by mrueschman on February 27, 2019 on Forum
... noted that there is artifact on the ECG channel ... this (i.e. excluded ECG artifact) will be the common ...
Reply by mrueschman on April 13, 2020 on Forum
... < 0.35 s are artifact because they fall on ... that was due to artifact and/or the presence of ...
Reply by kaaremikkelsen on May 19, 2020 on Forum
... secs) Respiratory|Respiratory SpO2 artifact|SpO2 artifact 840 - 870 (30 ...
slpa102 under Sleep Monitoring in HCHS variables
slpa104 under Sleep Monitoring in HCHS variables
highexclude under Polysomnography/Respiratory Events/Apnea in CFS variables
qucap under Sleep/Polysomnography (PSG)/Signal Quality in CHAT variables
usable mainly artifact free signal
overall_shhs1 under Sleep Monitoring/Polysomnography/Signal Quality/SHHS1 in SHHS variables
Overall study grade as assigned by scorer. The overall quality grade is based on the quality and duration of EEG, respiratory and oximetry signals. Based on signal quality during recording time. Studies are given a study code varying from outstanding to fair. If interested in studies of the best quality, overall quality scores of Very Good, Excellent and Oustanding can be selected. This code reflects the total duration of useable (artifact free, scorable) signals across channels, weighing those signals most critical for accurate scoring of respiratory events and staging.
overall_shhs2 under Sleep Monitoring/Polysomnography/Signal Quality/SHHS2 in SHHS variables
Overall study grade as assigned by scorer. These codes reflected the total duration of useable (artifact free, scorable) signals during sleep time across channels, weighing those signals most critical for accurate scoring of respiratory events and staging during sleep time. The Quality Assessment Form for SHHS2 was modified so that the overall quality grade and the signal quality codes were based on signals during sleep time. Since events were only scored during sleep time this provided a more accurate assessment of signal quality during the actual time or scoring. This change would only have affected the quality grade of a small number of studies in SHHS1 where there was a significant amount of time awake with very good signals combined with very poor signals that occurred during sleep. The overall and signal quality grades are comparable between SHHS1 and SHHS2.
Multi-Ethnic Study of Atherosclerosis
... of beat (0 = Artifact / 1 = Normal ...
Sleep Heart Health Study
... signals; ii) duration of artifact free signals during sleep, ...
Sleep Heart Health Study
... will be edited for artifact and respiratory events will ...