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I am a sleep scientist working at the Centre for Chronobiology of the University of Basel and its Psychiatric Hospital (UPK) in Switzerland. My research interests center around circadian rhythms and cognitive processing during healthy sleep and in patients with disorders of consciousness due to severe brain injury. My main focus is currently on the effects of natural daylight and artificial light on sleep.

Besides doing research, I also like talking and educating about it. I love doing science communication in German and English. You find an overview of my scientific outreach activities here. I am also available as a speaker for events, workshops, or seminars (references include: L’Oréal / Biotherm, Vattenfall, IKEA Schweiz, Kreissparkasse Hannover). If you would like to chat, just drop me a line. For more information, please find my CV here.

Continue reading “About”

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My latest publication entitled “Melatonin suppression does not automatically alter sleepiness, vigilance, sensory processing, or sleep” has now been accepted for publication in SLEEP.


At the “Psychologie & Gehirn”, the annual meeting of the German Psychological Society (DGPs) Section Biological & Neuropsychology, I received an award for science communcation.


I am very excited to announce that I will be a speaker at the TEDxBasel event on 7 May.


On 6 March, we had two publications on diurnal rhythms in patients with severe brain injury accepted in SLEEP and Brain Sciences (first author Monika Angerer, University of Salzburg). Congrats and well done, Monika!



With my colleague Monika Angerer (University of Salzburg), I have been awareded the Christian-Doppler-Preis of the Land Salzburg 2021 (division Molecular Biosciences and Neurosciences)

I have joined the team of freelance #scicomm trainers at the German National Institute for Science Communication (Nawik). I am looking forward to share my passion for science communication and help others discover and develop their potential.


I was delighted to be invited as a guest for “Zwischentöne” on Deutschlandfunk, where, among other aspects, we chatted about sleep, precarious working conditions in academia, and my cello.


I am incredibly grateful and happy that my Ambizione” grant will be funded by the Swiss National Science Foundation. The funding allows me to continue my research at the Centre for Chronobiology at the University of Basel and the Psychiatric Hospital of the University of Basel.


Our new publication entitled “Association of transportation noise with sleep during the first year of life: a longitudinal study” has been accepted in Environmental Research.

With Amrei Bahr, Kristin Eichhorn, and Sebastian Kubon, I have written a piece on the #IchBinHanna protests for Nature Human Behaviour. With the hashtag #IchBinHanna, thousands of researchers protest against a German law that forces researchers out (btw. Austria adopted a similar law in May 21).


On 19 May, I gave an expert interview in “Die grosse TerraX Show” on ZDF.

Continue reading “News”

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In my research I study cognitive processing during sleep as well as how circadian rhythms brought about by the internal biological clock interact with higher cognitive functions including consciousness. For a short summary of these topics see below.

All publications are open access. If you nevertheless cannot find it or are just too lazy to search for it, just drop me a line and I will be happy to send you the PDF.

Selected Publications

Blume, C., Schmidt, M.H., & Cajochen, C. (2020). Effects of the COVID-19 lockdown on human sleep and rest-activity rhythms. Current Biology. doi:

Angerer, M., Schabus, M., Pichler, G., Angerer, B., Scarpatetti, M., & Blume, C. (2022). From Dawn to Dusk – Mimicking Natural Daylight Exposure Improves Circadian Rhythm Entrainment in Patients with Severe Brain Injury. SLEEP. doi:

Angerer M., Schabus M., Raml M., Pichler G., Kunz A.B., Scarpatetti M., Trinka E., & Blume C. (2020). Actigraphy in brain-injured patients – A valid measurement for assessing circadian rhythms? BMC Medicine. doi:

Blume, C., Garbazza, C., Spitschan, M. (2019). Effects of light on human circadian rhythms, sleep, and mood. Somnologie.

Blume, C., Angerer, M., Raml, M., del Giudice, R., Santhi, N., Pichler, G., Scarpatetti, M., Kunz, A. B., Trinka, E., & Schabus, M. (2019). Healthier Rhythm, Healthier Brain? Integrity of Circadian Melatonin and Temperature Rhythms Relates to the Clinical State of Brain-Injured Patients. European Journal of Neurology.

Blume, C., del Giudice, R., Wislowska, M., Heib, D. P. J., & Schabus, M. (2018). Standing Sentinel during Sleep: Continued Evaluation of Environmental Stimuli in the Absence of Consciousness. NeuroImage.

Blume, C., Lechinger, J., Santhi, N., Giudice, R. d., Gnjezda, M.-T., Pichler, G., Scarpatetti, M., Donis, J., Michitsch, G., & Schabus, M. (2017). Significance of circadian rhythms in severely brain-injured patients: A clue to consciousness? Neurology.

Blume, C., del Giudice, R., Lechinger, J., Wislowska, M., Heib, D. P. J., Hoedlmoser, K., & Schabus, M. (2016). Preferential processing of emotionally and self-relevant stimuli persists in unconscious N2 sleep. Brain and Language.

Continue reading “Research”

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Awards & Grants

June 2022 Science communication award of the German Psychological Society (DGPs) Section Biological & Neuropsychology
April 2022 Antelope Career Programme, University of Basel (CHF 4.000,-)
April 2022 – March 2026
Swiss National Science Foundation (SNSF) Ambizione grant (04/22-03/26; principal investigator; CHF 930.449,-).
December 2021 Christian-Doppler Award of the Land Salzburg 2021 in the division Molecular Biosciences and Neurosciences (together with Monika Angerer, University of Salzburg).
April 2021 – March 2022 Grant from the Research Fund of the University of Basel for Outstanding Junior Researchers (principal investigator; CHF 79.412,00).
October 2020 Nachwuchsförderpreis Schlafforschung for our work on COVID-19 and Sleep by the German Sleep Society DGSM.
December 2019 Grant from the Novartis Foundation for Biological-Medical Research for the LIGHT.Sleep project at the Centre for Chronobiology in Basel (principal investigator; CHF 55.111,00)
June 2019 Grant from the Forschungsförderungsfonds of the Psychiatric Hospital of the University of Basel for the LIGHT.Sleep project at the Centre for Chronobiology in Basel (principal investigator; CHF 31.500,00)
May 2019 Grant from the Freiwillige Akademische Gesellschaft (FAG) Basel for the LIGHT.Sleep project at the Centre for Chronobiology in Basel (principal investigator; CHF 20.000,00)
January 2019 – March 2021
3-year Schrödinger Fellowship from the Austrian Science Fund (FWF; principal investigator; € 177.805,00)
September 2018 Giselher-Guttmann Price 2018 of the Austrian Society for Neuropsychology (GNPÖ) for our work on circadian rhythms in patients with severe brain injury (€ 500)
Poster Prize of the Young Austrian Neuroscience Association (ANA) at the “Salzburg Neuroscience Day”
May 2017    Young Investigators Award of the University of Salzburg
January 2014 – December 2016 PhD Scholarship from the Konrad-Adenauer-Stiftung e.V. (≈ € 49.000)
October 2009 – June 2010 One-year grant from the German Academic Exchange Service (DAAD) (≈ € 14.000)
December 2007 – November 2012 Scholarship from the Studienstiftung des Deutschen Volkes e.V./ German Academic Scholarship Foundation (≈ € 6.200)