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Renske Lok

TitleAssistant Professor
InstitutionUniversity of Colorado Boulder
DepartmentIntegrative Physiology

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    Collapse selected publications
    Publications listed below are automatically derived from MEDLINE/PubMed and other sources, which might result in incorrect or missing publications. Faculty can login to make corrections and additions.
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    1. Spitschan M, Kervezee L, Stefani O, Gordijn M, Veitch JA, Lok R. Evidence-based public health messaging on the non-visual effects of ocular light exposure: A modified Delphi expert consensus. medRxiv. 2025 Sep 03. PMID: 40385424.
      View in: PubMed
    2. Lok R, Zeitzer JM. Chronotype and Mental Health: Are Late Sleepers More Vulnerable? Curr Psychiatry Rep. 2025 Oct; 27(10):544-552. PMID: 40782308.
      View in: PubMed
    3. Cook JD, Barata F, Plante DT, Woodward S, Zeitzer JM, Lok R. Predictors of Sleep Latency From the Multiple Sleep Latency Test: A Random Forest Investigation in a Community Sample. J Sleep Res. 2025 Oct; 34(5):e70073. PMID: 40258391.
      View in: PubMed
    4. Walch O, Tavella F, Zeitzer JM, Lok R. Beyond phase shifting: targeting circadian amplitude for light interventions in humans. Sleep. 2025 Jan 13; 48(1). PMID: 39435852.
      View in: PubMed
    5. Lok R. Rhythms of light: Understanding the role of circadian timing in alertness and cognitive performance. Handb Clin Neurol. 2025; 206:17-26. PMID: 39864925.
      View in: PubMed
    6. Lok R, Weed L, Winer J, Zeitzer JM. Adverse effects of late sleep on physical health in a large cohort of community-dwelling adults. Eur J Intern Med. 2025 Apr; 134:66-74. PMID: 39743471.
      View in: PubMed
    7. Spitschan M, Kervezee L, Lok R, McGlashan E, Najjar RP. How stepping out helped us tune in: finding space and time to think as an early career researcher. NPJ Biol Timing Sleep. 2024; 1(1):9. PMID: 39363956.
      View in: PubMed
    8. Lok R, Suh S, Rue S, Weed L, Zeitzer JM. How many days are enough? Sleep-wake timing regularity and fragmentation scores change with the number of days included. J Sleep Res. 2025 06; 34(3):e14332. PMID: 39317644.
      View in: PubMed
    9. Spitschan M, Kervezee L, Lok R, McGlashan E, Najjar RP. Brighter future for light therapy: harmonising the reporting of light interventions in psychiatry. BMJ Ment Health. 2024 Jul 23; 27(1):1-2. PMID: 39054044.
      View in: PubMed
    10. Lok R, Weed L, Winer J, Zeitzer JM. Perils of the nighttime: Impact of behavioral timing and preference on mental health in 73,888 community-dwelling adults. Psychiatry Res. 2024 Jul; 337:115956. PMID: 38763081.
      View in: PubMed
    11. Lok R, Qian J, Chellappa SL. Sex differences in sleep, circadian rhythms, and metabolism: Implications for precision medicine. Sleep Med Rev. 2024 06; 75:101926. PMID: 38564856.
      View in: PubMed
    12. Meyer N, Lok R, Schmidt C, Kyle SD, McClung CA, Cajochen C, Scheer FAJL, Jones MW, Chellappa SL. The sleep-circadian interface: A window into mental disorders. Proc Natl Acad Sci U S A. 2024 Feb 27; 121(9):e2214756121. PMID: 38394243.
      View in: PubMed
    13. Winer JR, Lok R, Weed L, He Z, Poston KL, Mormino EC, Zeitzer JM. Impaired 24-h activity patterns are associated with an increased risk of Alzheimer's disease, Parkinson's disease, and cognitive decline. Alzheimers Res Ther. 2024 02 14; 16(1):35. PMID: 38355598.
      View in: PubMed
    14. Suh S, Lok R, Weed L, Cho A, Mignot E, Leary EB, Zeitzer JM. Fatigued but not sleepy? An empirical investigation of the differentiation between fatigue and sleepiness in sleep disorder patients in a cross-sectional study. J Psychosom Res. 2024 03; 178:111606. PMID: 38359639.
      View in: PubMed
    15. Lok R, Chawra D, Zeitzer JM. A threshold by any other name: is 5 minutes of wake "long" enough to degrade sleep quality? Sleep. 2024 01 11; 47(1). PMID: 37950748.
      View in: PubMed
    16. Spitschan M, Kervezee L, Lok R, McGlashan E, Najjar RP. ENLIGHT: A consensus checklist for reporting laboratory-based studies on the non-visual effects of light in humans. EBioMedicine. 2023 Dec; 98:104889. PMID: 38043137.
      View in: PubMed
    17. Lok R, Duran M, Zeitzer JM. Moving time zones in a flash with light therapy during sleep. Sci Rep. 2023 09 02; 13(1):14458. PMID: 37660233.
      View in: PubMed
    18. Weed L, Lok R, Chawra D, Zeitzer J. The Impact of Missing Data and Imputation Methods on the Analysis of 24-Hour Activity Patterns. Clocks Sleep. 2022 Sep 27; 4(4):497-507. PMID: 36278532.
      View in: PubMed
    19. Zeitzer JM, Lok R. Circadian photoreception: The impact of light on human circadian rhythms. Prog Brain Res. 2022; 273(1):171-180. PMID: 35940715.
      View in: PubMed
    20. Lok R, Joyce DS, Zeitzer JM. Impact of daytime spectral tuning on cognitive function. J Photochem Photobiol B. 2022 May; 230:112439. PMID: 35398657.
      View in: PubMed
    21. Lok R, Chawra D, Hon F, Ha M, Kaplan KA, Zeitzer JM. Objective underpinnings of self-reported sleep quality in middle-aged and older adults: The importance of N2 and wakefulness. Biol Psychol. 2022 04; 170:108290. PMID: 35192907.
      View in: PubMed
    22. Lok R, Zeitzer JM. Physiological correlates of the Epworth Sleepiness Scale reveal different dimensions of daytime sleepiness. Sleep Adv. 2021; 2(1):zpab008. PMID: 34250482.
      View in: PubMed
    23. Lok R, Zeitzer JM. A Temporal Threshold for Distinguishing Off-Wrist from Inactivity Periods: A Retrospective Actigraphy Analysis. Clocks Sleep. 2020 Nov 12; 2(4):466-472. PMID: 33198122.
      View in: PubMed
    24. Oterdoom DLM, Lok R, van Beek AP, den Dunnen WFA, Emous M, van Dijk JMC, van Dijk G. Deep Brain Stimulation in the Nucleus Accumbens for Binge Eating Disorder: a Study in Rats. Obes Surg. 2020 10; 30(10):4145-4148. PMID: 32451916.
      View in: PubMed
    25. Lok R, van Koningsveld MJ, Gordijn MCM, Beersma DGM, Hut RA. Daytime melatonin and light independently affect human alertness and body temperature. J Pineal Res. 2019 Aug; 67(1):e12583. PMID: 31033013.
      View in: PubMed
    26. Lok R, Smolders KCHJ, Beersma DGM, de Kort YAW. Light, Alertness, and Alerting Effects of White Light: A Literature Overview. J Biol Rhythms. 2018 12; 33(6):589-601. PMID: 30191746.
      View in: PubMed
    27. Lok R, Woelders T, Gordijn MCM, Hut RA, Beersma DGM. White Light During Daytime Does Not Improve Alertness in Well-rested Individuals. J Biol Rhythms. 2018 12; 33(6):637-648. PMID: 30191761.
      View in: PubMed
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