Biography
seit Mai 2023
Senior Wissenschaftlicher Mitarbeiter im Themenfeld Licht
Februar 2018 bis April 2023
Postdoktorand am Zentrum für Chronobiologie, UPK Basel
Mai 2008 bis Januar 2018
Wissenschaftler im Light Fusion Lab des Fraunhofer IAO, Stuttgart
Oktober 2004 bis April 2008
Leiter des Visualisierungs-Labors am Centre of Advanced Technologies, Uni Basel
August 2000 bis September 2004
Wissenschaftlicher Mitarbeiter am IAT, Uni Stuttgart
Oktober 1997 bis Mai 2000
Studium Investitionsgüter-Design, Staatl. Akademie der Bildenden Künste Stuttgart
Mai 1995 bis September 1997
Labor-Ingenieur im Optik-Labor der GSO FH Nürnberg
Oktober 1990 bis Februar 1995
Studium Feinwerktechnik, GSO FH Nürnberg
Selected peer reviewed publications
The Impact of Pupil Constriction on the Relationship Between Melanopic EDI and Melatonin Suppression in Young Adult Males, I Schöllhorn, O Stefani, RJ Lucas, M Spitschan, C Epple, C Cajochen. J Biol Rhythms. 2024, doi: 10.1177/07487304241226466.
Blue Light and Temperature Actigraphy Measures Predicting Metabolic Health Are Linked to Melatonin Receptor Polymorphism, D Gubin, K Danilenko, O Stefani, et al. Biology. 2024; 13(1):22. https://doi.org/10.3390/biology13010022
Seasonal Variation in the Responsiveness of the Melanopsin System to Evening Light: Why We Should Report Season When Collecting Data in Human Sleep and Circadian Studies, I Schöllhorn, O Stefani, C Blume, C Cajochen, Clocks & Sleep 5, no. 4: 651-666, 2023
Ultradian sleep cycles: Frequency, duration, and associations with individual and environmental factors - A retrospective study, C Cajochen, C Reichert, M Münch, V Gabel, O Stefani, S Chellappa, C Schmidt, Sleep Health, 2023
Utilising spectral lighting simulation technique for evaluating transmitted daylight through glazing: Exploring the non-visual effects and colour appearance, M Nazari, B Matusiak & O Stefani, Heliyon, e20436, 2023
Effects of nature-adapted lighting solutions ("Virtual Sky") on subjective and objective correlates of sleepiness, well-being, visual and cognitive performance at the workplace, I Schöllhorn, G Deuring, O Stefani et al. PLoS One 18(8), e0288690, 2023
Melanopic irradiance defines the impact of evening display light on sleep latency, melatonin and alertness, I Schöllhorn, O Stefani, RJ Lucas, M Spitschan, HC Slawik, C Cajochen, Communications Biology 6 (1), 228, 2023
Wearable Light-and-Motion Dataloggers for Sleep/Wake Research: A Review, KV Danilenko, O Stefani, et al., Applied Sciences 12 (22), 11794, 2022
Impact of evening light exposures with different solid angles on circadian melatonin rhythms, alertness, and visual comfort in an automotive setting, M Weng, I Schöllhorn, M Kazhura, BB Cardini, O Stefani, Clocks & Sleep 4 (4), 607-622, 2022
Influence of evening light exposure on polysomnographically assessed night-time sleep: A systematic review with meta-analysis C Cajochen, O Stefani, I Schöllhorn, D Lang, SL Chellappa, Lighting Research & Technology 54 (6), 609-624, 2022
Predicting melatonin suppression by light in humans: Unifying photoreceptor-based equivalent daylight illuminances, spectral composition, timing and duration of light exposure, O Stefani, MC Giménez, C Cajochen, D Lang, G Deuring, LJM Schlangen, Journal of Pineal Research 72 (2), e12786, 2022
Optimising metameric spectra for integrative lighting to modulate the circadian system without affecting visual appearance, B Zandi, O Stefani, A Herzog, LJM Schlangen, QV Trinh, TQ Khanh, Scientific reports 11 (1), 23188, 2021
Should we re-think regulations and standards for lighting at workplaces? A practice review on existing lighting recommendations O Stefani & C Cajochen, Frontiers in psychiatry 12, 652161, 2021
Changing color and intensity of LED lighting across the day impacts on circadian melatonin rhythms and sleep in healthy men, O Stefani, M Freyburger, et al., Journal of Pineal Research 70 (3), e12714, 2021 (Top Cited Article 2021-2022)
Daylight: What makes the difference? M Knoop, O Stefani, et al., Lighting Research & Technology 52 (3), 423-442, 2020
The role of daylight for humans: gaps in current knowledge, M Münch, A Wirz-Justice, SA Brown, T Kantermann, K Martiny, O Stefani, et al. Clocks & sleep 2 (1), 61-85, 2020
Effect of daylight LED on visual comfort, melatonin, mood, waking performance and sleep, C Cajochen, M Freyburger, T Basishvili, C Garbazza, F Rudzik, C Renz, K Kobayashi, Y Shirakawa, J Weibel, O Stefani, Lighting Research & Technology 51 (7), 1044-1062 74, 2019
How to report light exposure in human chronobiology and sleep research experiments, M Spitschan, O Stefani, P Blattner, C Gronfier, SW Lockley, RJ Lucas, Clocks & sleep 1 (3), 280-289, 2019
Evening exposure to a light-emitting diodes (LED)-backlit computer screen affects circadian physiology and cognitive performance, C Cajochen, S Frey, D Anders, J Späti, M Bues, A Pross, R Mager, A Wirz-Justice, O Stefani, J Appl Physiol, doi: 10.1152/japplphysiol.00165.2011, 2011
Verbandstätigkeiten
- Vorstandsmitglied der Schweizer Licht Gesellschaft
- Mitglied im CIE JTC 20 Wearable Light Dosimetry
- Mitglied in der Daylight Academy
- Mitglied der Jury Prix Lumiere
- Mitglied der Jury Lichtkulturrat
- Mitglied in der Good Light Group
