n2 - Search - Sleep Data - National Sleep Research Resource

Spindle Characteristics (Stage N2) - Density (C3)

spindle_char_n2_density_c3 under Sleep Monitoring/Polysomnography/Electroencephalogram in SHHS variables

Spindle characteristics in stage N2. For detection methods and validation see Method A10: Goldschmied et al. 2021 (PubMed ID: 33165618), and Guadagni et al. 2021 (PubMed ID:32281182)Search for all EEG variables within this dataset

Spindle Characteristics (Stage N2) - Density (C4)

spindle_char_n2_density_c4 under Sleep Monitoring/Polysomnography/Electroencephalogram in SHHS variables

Spindle Characteristics (Stage N2) - Frequency (C3)

spindle_char_n2_freq_c3 under Sleep Monitoring/Polysomnography/Electroencephalogram in SHHS variables

Spindle Characteristics (Stage N2) - Frequency (C4)

spindle_char_n2_freq_c4 under Sleep Monitoring/Polysomnography/Electroencephalogram in SHHS variables

Spindle Characteristics (Stage N2) - % Fast (C3)

spindle_char_n2_pctfast_c3 under Sleep Monitoring/Polysomnography/Electroencephalogram in SHHS variables

Spindle Characteristics (Stage N2) - % Fast (C4)

spindle_char_n2_pctfast_c4 under Sleep Monitoring/Polysomnography/Electroencephalogram in SHHS variables

Spindle Characteristics (Stage N2) - Power (C3)

spindle_char_n2_power_c3 under Sleep Monitoring/Polysomnography/Electroencephalogram in SHHS variables

Spindle Characteristics (Stage N2) - Power (C4)

spindle_char_n2_power_c4 under Sleep Monitoring/Polysomnography/Electroencephalogram in SHHS variables

Diary: Minutes of Sleep on Night n2 before MSLT

min_n2 under Sleep Monitoring/Other Sleep Tests/Multiple Sleep Latency Test (MSLT) in WSC variables

Average ORP During N2

avg_orp_n2 under Sleep Monitoring/Polysomnography/Electroencephalogram in SHHS variables

Average Odds Ratio Product (ORP) in all 30-s epochs during manually scored sleep stages. ORP is a continuous index of sleep depth and wake propensity. A value of 0 indicates very deep sleep, a value of 2.5 indicates full wakefulness. Search for all EEG variables within this dataset

Percentage of total sleep duration (i.e., total sleep time, TST) in stage 2 (N2) from polysomnography

nsrr_pctdursp_s2 under Harmonized/Polysomnography/Sleep Architecture in SOF variables

Harmonized by the NSRR team. Source: :tmstg2p: at Visit 8

Diary: Bedtime on Night n2 before MSLT

bedtime2 under Sleep Monitoring/Other Sleep Tests/Multiple Sleep Latency Test (MSLT) in WSC variables

Diary: Naps on Day n2 before MSLT

naps_yn2 under Sleep Monitoring/Other Sleep Tests/Multiple Sleep Latency Test (MSLT) in WSC variables

Diary: Waketime on Morning n2 before MSLT

waketime2 under Sleep Monitoring/Other Sleep Tests/Multiple Sleep Latency Test (MSLT) in WSC variables

Average thoraco-abdominal asynchrony during scored-event-free non-rapid eye movement sleep (NREM) Stage 2

taa_n2 under Sleep Monitoring/Polysomnography/Thoraco-abdominal Asynchrony in CHAT variables

Percentage of non-rapid eye movement sleep (NREM) Stage 2 included in the total thoraco-abdominal asynchrony analysis

taa_n2_pctst under Sleep Monitoring/Polysomnography/Thoraco-abdominal Asynchrony in CHAT variables

Amount of non-rapid eye movement sleep (NREM) Stage 2 included in the total thoraco-abdominal asynchrony analysis

taa_n2_st under Sleep Monitoring/Polysomnography/Thoraco-abdominal Asynchrony in CHAT variables

Study Scored Sleep / Wake Only (All Sleep Scored As N2 And No Arousals Scored Due To Poor Quality EEG) from type II polysomnography

slewake5 under Sleep Monitoring/Polysomnography/Signal Quality in MESA variables

Percentage of stage 1 and 2 sleep among total sleep duration from type I polysomnography

pcttststage12 under Sleep Monitoring/Polysomnography in WSC variables

Conventionally, total sleep duration would be called total sleep time (TST).

Percentage of stage 2 sleep among total sleep duration from type I polysomnography

pcttststagen2 under Sleep Monitoring/Polysomnography in WSC variables

Conventionally, total sleep duration would be called total sleep time (TST).

Percentage of total sleep duration in stage 2 from type II polysomnography

timest2p under Sleep Monitoring/Polysomnography/Sleep Architecture in SHHS variables