2025
0434 Comparison of Machine Learning Models for fMRI-Based Sleep Staging
Cho G, Hahm D, Mecca A, Miner B. 0434 Comparison of Machine Learning Models for fMRI-Based Sleep Staging. Sleep 2025, 48: a190-a190. DOI: 10.1093/sleep/zsaf090.0434.Peer-Reviewed Original Research
2024
Spectral Slope and Lempel–Ziv Complexity as Robust Markers of Brain States during Sleep and Wakefulness
Höhn C, Hahn M, Lendner J, Hoedlmoser K. Spectral Slope and Lempel–Ziv Complexity as Robust Markers of Brain States during Sleep and Wakefulness. ENeuro 2024, 11: eneuro.0259-23.2024. PMID: 38471778, PMCID: PMC10978822, DOI: 10.1523/eneuro.0259-23.2024.Peer-Reviewed Original ResearchConceptsImpact of sleep stagesTask engagementHealthy male human subjectsBrain statesMeasures of brain activityMale human subjectsWithin-subject designN3 sleepREM sleepSpectral slopeSleep stagesBrain activityTask performanceNeurological disordersSleepFrequency rangeHuman subjectsRobust markersLempel-Ziv complexity
2023
Noise-Robust Sleep Staging via Adversarial Training With an Auxiliary Model
Yoo C, Liu X, Xing F, Fakhri G, Woo J, Kang J. Noise-Robust Sleep Staging via Adversarial Training With an Auxiliary Model. IEEE Transactions On Biomedical Engineering 2023, 70: 1252-1263. PMID: 36227815, DOI: 10.1109/tbme.2022.3214269.Peer-Reviewed Original ResearchConceptsProblem of domain shiftTarget networkConsumer-level devicesPre-trained modelsSleep staging performanceSevere noise levelsEfficient training approachAdversarial trainingAdversarial noiseDomain shiftAdversarial transformationsAuxiliary modelDL modelsInput perturbationsTraining modelArbitrary noiseTesting stageEnhanced robustnessNoise signalsTraining approachTest environmentExperimental resultsNoiseSleep stagesRobustnessPolysomnography
Jafari B, Mohsenin V. Polysomnography. 2023, 374-387. DOI: 10.1016/b978-0-12-822963-7.00174-2.Peer-Reviewed Original ResearchMovement disordersREM sleep behavior disorderSleep behavior disorderSleep-disordered breathingArterial oxygen saturationSleep stagesREM sleep stagesLimb electromyogramsCardiorespiratory functionRespiratory effortSleep architectureArousal disorderOxygen saturationChin electromyogramDiagnostic utilityOrgan functionPolysomnographyBehavior disorderOral airflowSleepDisordersEye movementsStage WElectromyogramBreathing
2022
Sensorimotor Cortical Activity during Respiratory Arousals in Obstructive Sleep Apnea
Bahr-Hamm K, Koirala N, Hanif M, Gouveris H, Muthuraman M. Sensorimotor Cortical Activity during Respiratory Arousals in Obstructive Sleep Apnea. International Journal Of Molecular Sciences 2022, 24: 47. PMID: 36613490, PMCID: PMC9820672, DOI: 10.3390/ijms24010047.Peer-Reviewed Original ResearchConceptsModerate OSA patientsSevere OSASensorimotor cortical activityOSA patientsRespiratory arousalsCortical activityObstructive sleep apnea patientsSevere OSA patientsObstructive sleep apneaSignificant decreaseSleep apnea patientsSleep stagesRaw electroencephalography dataModerate OSASleep apneaRespiratory eventsApnea patientsDifferential diagnosisSleep stage N1PatientsAutonomic activationStage N1Cortical arousalPathophysiologic traitsOSAReduced Cross-Frequency Coupling and Daytime Sleepiness in Obstructive Sleep Apnea Patients
Gouveris H, Koirala N, Anwar A, Ding H, Ludwig K, Huppertz T, Matthias C, Groppa S, Muthuraman M. Reduced Cross-Frequency Coupling and Daytime Sleepiness in Obstructive Sleep Apnea Patients. Biology 2022, 11: 700. PMID: 35625429, PMCID: PMC9138271, DOI: 10.3390/biology11050700.Peer-Reviewed Original ResearchRespiratory disturbance indexObstructive sleep apneaCortical sensorimotor areasOSA patientsSensorimotor areasRespiratory distressCross-frequency couplingObstructive sleep apnea patientsEpworth Sleepiness ScaleSleep apnea patientsSleep stagesDistinct sleep stagesMotor dysfunctionSleep apneaPatient groupApnea patientsDaytime sleepinessSleepiness ScalePatientsPolysomnography recordingsObjective markersSubjective sleepinessDisturbance indexSleepinessDistress
2021
End-to-end sleep staging using convolutional neural network in raw single-channel EEG
Li F, Yan R, Mahini R, Wei L, Wang Z, Mathiak K, Liu R, Cong F. End-to-end sleep staging using convolutional neural network in raw single-channel EEG. Biomedical Signal Processing And Control 2021, 63: 102203. DOI: 10.1016/j.bspc.2020.102203.Peer-Reviewed Original ResearchSingle-channel electroencephalogramConvolutional neural networkSqueeze-ExcitationNeural networkRaw single-channel electroencephalogramChannel mismatchModel generalization abilitySleep staging taskChannel mismatch problemAutomatic sleep staging methodEnd-to-endAutomatic sleep stagingManual sleep stagingSleep staging methodsSleep stagesSleep-EDFxGeneralization capabilityGeneralization abilityTrained weightsElectroencephalogram signalsSleep datasetsElectroencephalogram channelsMismatch problemPortable sleep monitoring deviceClinical sleep recordings
2020
An electrophysiological marker of arousal level in humans
Lendner J, Helfrich R, Mander B, Romundstad L, Lin J, Walker M, Larsson P, Knight R. An electrophysiological marker of arousal level in humans. ELife 2020, 9: e55092. PMID: 32720644, PMCID: PMC7394547, DOI: 10.7554/elife.55092.Peer-Reviewed Original ResearchConceptsNon-rapid eye movement sleepStates of reduced arousalREM sleepDeep non-rapid eye movement sleepSpectral slopeEye movement sleepComponents of neural activityOccurrence of synchronized oscillationsSynchronous oscillatory activitySurface EEG recordingsScale-free componentsElectrophysiological markersMovement sleepGeneral anesthesiaEEG recordingsOscillatory activitySleep stagesPower spectrumAnesthesiaSleepPropofol anesthesiaArousal stateREMElectroencephalogramNeural activity
2016
Slow wave sleep and accelerated forgetting
Atherton K, Nobre A, Lazar A, Wulff K, Whittaker R, Dhawan V, Lazar Z, Zeman A, Butler C. Slow wave sleep and accelerated forgetting. Cortex 2016, 84: 80-89. PMID: 27710778, PMCID: PMC5084685, DOI: 10.1016/j.cortex.2016.08.013.Peer-Reviewed Original ResearchConceptsAccelerated long-term forgettingSlow wave sleepMemory benefitsAmount of slow wave sleepWord pair association taskLong-term forgettingBenefits of sleepDeclarative memoryAccelerated forgettingMemory consolidationAssociation taskMemory retentionBrain activityHealthy control groupHealthy participantsMemoryHealthy individualsElectrographic epileptiform activitySleepForgettingEpileptiform activityIndividualsSleep stagesControl groupHealthy people
2014
Feasibility study of unattended polysomnography in medical intensive care unit patients
Knauert MP, Yaggi HK, Redeker NS, Murphy TE, Araujo KL, Pisani MA. Feasibility study of unattended polysomnography in medical intensive care unit patients. Heart & Lung 2014, 43: 445-452. PMID: 25023504, PMCID: PMC4150840, DOI: 10.1016/j.hrtlng.2014.06.049.Peer-Reviewed Original ResearchConceptsMedical intensive care unitPortable polysomnographySleep efficiencyMedical intensive care unit patientsIntensive care unit patientsSleep deprivationOvernight sleep durationCare unit patientsObservational pilot studyIntensive care unitIndicators of feasibilityUnattended polysomnographyUnit patientsIll patientsPatients' sleepCare unitArousal indexPSG studiesSleep durationPatientsInterpretable qualityPilot studyGold standardSleepSleep stages
2007
The visual scoring of sleep in adults.
Silber MH, Ancoli-Israel S, Bonnet MH, Chokroverty S, Grigg-Damberger MM, Hirshkowitz M, Kapen S, Keenan SA, Kryger MH, Penzel T, Pressman MR, Iber C. The visual scoring of sleep in adults. Journal Of Clinical Sleep Medicine 2007, 3: 121-31. PMID: 17557422, DOI: 10.5664/jcsm.26814.Peer-Reviewed Reviews, Practice Guidelines, Standards, and Consensus Statements
2000
Slow-wave sleep and waking cognitive performance II Findings among middle-aged adults with and without insomnia complaints
Edinger J, Glenn D, Bastian L, Marsh G. Slow-wave sleep and waking cognitive performance II Findings among middle-aged adults with and without insomnia complaints. Physiology & Behavior 2000, 70: 127-134. PMID: 10978487, DOI: 10.1016/s0031-9384(00)00238-9.Peer-Reviewed Original ResearchConceptsSlow-wave sleepMiddle-aged adultsInsomnia sufferersNormal sleepersInsomnia complaintsReaction time performanceNocturnal slow-wave sleepNocturnal sleepSleep pathologySimple reaction timeDaytime testsNeurocognitive functioningComplex reaction timeSleepSleep stagesPrevious studiesSufferersRestorative roleComplaintsAdultsCurrent study
1999
Upper Airway Resistance Syndrome: Effect of Nasal Dilation, Sleep Stage, and Sleep Position
Bahammam A, Tate R, Manfreda J, Kryger M. Upper Airway Resistance Syndrome: Effect of Nasal Dilation, Sleep Stage, and Sleep Position. Sleep 1999, 22: 592-598. PMID: 10450594, DOI: 10.1093/sleep/22.5.592.Peer-Reviewed Original ResearchConceptsUpper airway resistance syndromeStage 1 sleepSleep positionNasal dilationDesaturation timeSleep architectureExternal nasal dilationArousal indexCardiorespiratory parametersSleep stagesNREM sleepNasal cross-sectional areaExternal nasal dilatorSlow-wave sleepObstructive sleepAirway collapsibilityConsecutive patientsNasal dilatorNasal obstructionResistance syndromeSupine positionIntrapharyngeal pressureIndirect markerWave sleepCrossover design
1996
Effect of severe gastroesophageal reflux on sleep stage in patients with aperistaltic esophagus
Shoenut J, Yamashiro Y, Orr W, Kerr P, Micflikier A, Kryger M. Effect of severe gastroesophageal reflux on sleep stage in patients with aperistaltic esophagus. Digestive Diseases And Sciences 1996, 41: 372-376. PMID: 8601385, DOI: 10.1007/bf02093831.Peer-Reviewed Original Research
1988
Sleep Apnea and Body Position during Sleep
George C, Millar T, Kryger M. Sleep Apnea and Body Position during Sleep. Sleep 1988, 11: 90-99. PMID: 3363274, DOI: 10.1093/sleep/11.1.90.Peer-Reviewed Original ResearchConceptsApnea-hypopnea indexRapid eye movementLateral decubitus positionApnea durationObese patientsSleep apneaDecubitus positionBody positionSleep stagesSevere sleep apneaObstructive sleep apneaNon-REM sleepMajor treatment interventionApnea frequencyOvernight studyPatientsTreatment interventionsApneaNREMEye movementsSleepPrevious studiesPolysomnogramSupinePosition changes
1987
The Effect of Excessive Ethanol Ingestion on Sleep in Severe Chronic Obstructive Pulmonary Disease
Easton P, West P, Meatherall R, Brewster J, Lertzman M, Kryger M. The Effect of Excessive Ethanol Ingestion on Sleep in Severe Chronic Obstructive Pulmonary Disease. Sleep 1987, 10: 224-233. PMID: 3629084, DOI: 10.1093/sleep/10.3.224.Peer-Reviewed Original ResearchConceptsChronic obstructive pulmonary diseaseSevere chronic obstructive pulmonary diseaseObstructive pulmonary diseaseSleep timePulmonary diseaseHeart rateEmphysematous chronic obstructive pulmonary diseaseExcessive ethanol ingestionSignificant O2 desaturationArterial oxygen saturationIngestion of alcoholDose of ethanolSleep stagesExcessive alcohol ingestionTotal sleep timeMean heart ratePremature ventricular contractionsCOPD altersAlcohol ingestionO2 desaturationEthanol ingestionOxygen saturationVentricular contractionsREM timeSerum ethanolSnoring in Normal Young Adults: Prevalence in Sleep Stages and Associated Changes in Oxygen Saturation, Heart Rate, and Breathing Pattern
Perez-Padilla J, West P, Kryger M. Snoring in Normal Young Adults: Prevalence in Sleep Stages and Associated Changes in Oxygen Saturation, Heart Rate, and Breathing Pattern. Sleep 1987, 10: 249-253. PMID: 3629087, DOI: 10.1093/sleep/10.3.249.Peer-Reviewed Original ResearchConceptsHeart rateContinuous snoringSleep stagesOxygen saturationPrevalence of snoringSignificant O2 desaturationMean heart rateNormal young adultsMean SaO2O2 desaturationDifferent pathogenesisDifferent sleep stagesNormal subjectsBreathing patternLight snorersBreathing frequencySnoringArrhythmiasYoung adultsPrevalenceStage 3Same sleep stageStage 2Associated ChangesSubjects
1983
Sighs During Sleep in Adult Humans
Perez-Padilla R, West P, Kryger M. Sighs During Sleep in Adult Humans. Sleep 1983, 6: 234-243. PMID: 6622880, DOI: 10.1093/sleep/6.3.234.Peer-Reviewed Original ResearchConceptsSleep stage changesCentral apneaGreat intersubject variationExpiratory flowRespiratory centerInspiratory flowEMG activityHeart rateRespiratory rateNormal adultsRespiratory cycleSleepIntersubject variationAdult humansRespiratory controlSleep stagesEEG frequenciesStage 1Normal variabilityPrevious breathStage changesSighsArousalHypoventilationApnea
1980
Chemical Control of Ventilation and Sleep Arterial Oxygen Desaturation in Patients with COPD1–3
Fleetham J, Mezon B, West P, Bradley C, Anthonisen N, Kryger M. Chemical Control of Ventilation and Sleep Arterial Oxygen Desaturation in Patients with COPD1–3. American Journal Of Respiratory And Critical Care Medicine 1980, 122: 583-9. PMID: 7436124, DOI: 10.1164/arrd.1980.122.4.583.Peer-Reviewed Original ResearchConceptsO2 saturationSleep desaturationVentilatory sensitivityRapid eye movement (REM) sleepNocturnal changesArterial oxygen desaturationLowest O2 saturationHypoxic ventilatory responseArterial O2 saturationEye movement sleepHypoxemic COPDNocturnal desaturationOxygen desaturationLung functionBlood gasesVentilatory responseMovement sleepVentilatory controlPatientsMaximal desaturationSleepDesaturationSleep stagesHypercapniaWakefulness
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