high - Search - Sleep Data - National Sleep Research Resource

... not necessarily), a relatively high tonic EMG. Waking shows ... mostly lower voltage (amplitude). High voltage (50-75 μV) 2-7 ... sharp waves, occasionally as high as 200 μV, are ...

08-equipment-shhs1.md

Sleep Heart Health Study

... a “cleaner” signal (less high frequency within the waveforms) ... freq. response: Ch1 EEG/2 High pass filter -3dB 0.39Hz ... (multiple poles) Ch2 ECG High pass filter -3dB 0.41Hz ...

Navigating the spectral slopes of the NSRR cohorts

Posted by shaunpurcell on November 8, 2021 in Data Notes

... of mastoid reference and high frequency EEG document a ... SHHS that impact the high frequency (e.g. >20 Hz) ... analyses that leverage the "high" (in this context, say ...

13-hrv-analysis.md

Sleep Heart Health Study

... 0.15 Hz), - HF (high frequency power: the NN ... ratio of low to high frequency power). Traditionally frequency ... an attenuation in the high frequency components. To eliminate ...

Average Normalized EEG Power

avg_normalized_eeg_power under Sleep Monitoring/Polysomnography/Electroencephalogram in SHHS variables

In some PSGs the EEG is generally low in amplitude in all frequency ranges while in others it is high. The reasons for these differences could be technical (distance between active and reference electrode, electrode impedance), biological (e.g. age, skin or skull impedance) or some other reason Younes et al. 2021 (PubMed ID: 34156473). This index was recently found to be a risk factor for future development of dementia (Stone et al. 2018). In addition, it was found to be highly reproducible across 5 years of follow up. A high value also results in artifactually high spindle power and density and higher alpha intrusion. Search for all EEG variables within this dataset

Diagnosis of high cholesterol

high_cholesterol under Medical History in APOE variables

hrv-analysis.md

Multi-Ethnic Study of Atherosclerosis

... 0.15 Hz) - HF (high frequency power: the NN ... ratio of low to high frequency power) - HFn ... an attenuation in the high frequency components. To eliminate ...

hrv-analysis.md

Childhood Adenotonsillectomy Trial

... 0.15 Hz), - HF (high frequency power: the NN ... ratio of low to high frequency power). Traditionally frequency ... an attenuation in the high frequency components. To eliminate ...

The Importance of Field Experiments in Understanding Sleep Among the Urban Poor

Posted by michaelprerau on September 20, 2022 in Guest Blogger

Article Citations Rao, G., S. Redline, F. Schilbach, H. Schofield, ...

Publications

Sutherland, K., Yee, B. J., Kairaitis, K., Wheatley, J., de ...

Troponin-I, high-sensitivity (Abbott)

abbott_hstnl__pg_ml_ under Clinical Data/Laboratory Tests in HEARTBEAT variables

Abbott High-Sensitivity Troponin-I test

Troponin-I, high-sensitivity

hstniiuo_pg_ml under Clinical Data/Laboratory Tests in HEARTBEAT variables

High sensitivity troponin levels (investigational use only)

Dyslipidemia (High LDL, low HDL, or high triglyerides) - NIH

dyslipidemia under Clinical Data/Laboratory Tests in HCHS variables

This variable checks for HDL, LDL, and triglyceride values to determine presence/absence of dyslipidemia.

Education Status (3 levels)

education_c3 under Demographics/Education in HCHS variables

This variable is the educational status derived from variable groups of the attainment of a high school diploma or an equivalent degree, not having that degree, or attainment of education beyond a high school equivalent (i.e. college or vocational).

Physical activity level (low, mod, high)

gpaq_level under Lifestyle and Behavioral Health in HCHS variables

This variable assigns a value of 1 assigned to those with high total physical activity levels, a value of 2 to those with moderate total physical activity levels and a value of 3 to those with low total physical activity levels.

Orp-9

orpto9 under Sleep Monitoring/Polysomnography/Electroencephalogram in SHHS variables

Rate of sleep recovery following arousals. A high value reflects slow recovery and suggests high central arousability (Hyperarousal state).Younes et al. 2021 (PubMed ID: 34156473)Younes and Hanley 2016 (PubMed ID: 26718786)Younes and Giannouli 2020 (PubMed ID: 31992415) Search for all EEG variables within this dataset

6-625-mop-episodic-events-in-sleep.md

Sleep Heart Health Study

... complexes Hypersynchrony: bursts of high voltage delta (< 4 ... are commonly seen: 1) High voltage, rhythmic activity in ...