TV program FOCUS on health risks of night work

On November 7th, NTR presented a documentary FOCUS on the health risks of working at night and discusses possible solutions. In accordance with the reports of the Dutch Health Council 2015 and 2017, the most important point is to avoid working at night as much as possible. Roelof Hut from the University of Groningen and…

Plea for Central European Time in the Netherlands

Last weekend Daylight saving time 2018 ended and Europe went back to Central European Time. In a short movie commissioned by the University of Groningen, Marijke Gordijn explained once more why for us, in the Netherlands, the current time we have in winter is the most optimal choice. In fact, The Netherlands should even be…

16 tips to wake up easier in The Guardian

Linda Geddes, journalist in the UK, published an article in the Guardian titled “No more snooze button: a complete guide to waking up feeling fantastic“. “Now the clocks have gone back and the days are getting shorter, it can be hard to get out of bed. But, from dawn simulators to a regular wakeup time,…

Scientific arguments to stop with daylight saving time

Chrono@Work is proactive in spreading scientific arguments for a thoughtfull decision on stopping summer/wintertime. Now that the EU recommends to end changing our clocks twice a year, each country has to decide what to do. The recommendation from the EU is based on years of discussions with and within the parliament and triggered by the outcome…

Human solutions for control rooms in Muscat

Invited by Honeywell and Medilux, Chrono@Work gave a lecture in Muscat (Oman) on ‘human solutions for control rooms’. In between very technical lectures and for a very special, interested audience, we talked about putting the human in the center of attention. What can we do to optimize the 24h environment for people working 24/7 in…

Charge your Brainzzz is live!

After a year of hard work we are there! The teaching materials for the package Charge Your Brainzzz are ready. Charge your Brains teaches highschool students about sleep. On 27 September, Chrono@Work and the Dutch Brain Foundation will launch this special educational package. Charge Your Brainzzz is a modern package with activating learning tools including…

Launching teaching material Charge Your Brainzzz

Wednesday September 27th, Chrono@Work and the Brain Foundation will launch the new teaching material Charge Your Brainzzz in the Corpus Congress Centre in Leiden. Charge Your Brainzzz consists of a package of three lessons about sleep regulation and sleep disorders, with activating learning tools, animations (to be used during class) and a serious game developed…

Educational paper published on Chronotherapeutic interventions

Chronotherapeutic interventions Marijke Gordijn of Chrono@Work co-authored a Dutch paper on Chronotherapeutic interventions in Psychiatry. She wrote this paper together with 3 colleagues with whom she also started Chronotherapy Network Netherlands (www.cnn.nl). The paper was published in the continuing education journal Psyfar. Since 2006, Psyfar focusses on educating and testing psychiatrists, hospital pharmacists, geriatrics specialists,…

Review paper on Seasonal affective disorder, winter type.

Seasonal affective disorder, winter type: current insights and treatment options Marijke Gordijn from Chrono@Work co-authored a review paper on Seasonal Affective disorders. Seasonal affective disorder (SAD), winter type, is a seasonal pattern of recurrent major depressive episodes most commonly occurring in autumn or winter and remitting in spring/summer. The syndrome has been well-known for more…

Daylight saving time ends

According to the European directives, Daylight Saving time ends in the last weekend of October. Most European countries follow this directive, which means that this year on October 30 the clock will be shifted back one hour (change from 3 am to 2 am). For us this means an extra hour on the night of…

Are blue light filters nonsense?

In their issue No. 19 of 23 August – 6 september, Computer Idee, a magazine about computers and electronics for consumers, pays detailed attention to the pros and cons of blue light filters for computers, tablets and smartphones. The conclusion is that we are exposed to more blue light through the use of electronic screens…

Radio interview in Morad & Shay program

On July 19th  at 17: 15h Marijke Gordijn CEO of Chrono@Work was interviewed by Morad & Shay for the local youth radio station Funx. Following up on a British study from 2015 that discussed the optimal bed-times, times of getting up and working times for young and elderly people. Professor Kelley and colleagues published an…

Presentation: Introduction to Chronotherapy

Marijke Gordijn CEO of Chrono@Work will give a lecture on Wednesday, July 13th at the satellite symposium entitled ARE MOOD DISORDERS CHRONOBIOLOGICAL DISORDERS? This satellite symposium is organized by the Society for Light Treatment and Biological Rhythms on the first day of the 18th Annual Conference of The International Society for Bipolar Disorders (ISBD16) held…

Save the date! Sleep 2016

Under the umbrella of the Dutch Association of Sleep-Wake Research (NSWO) and the Sleep Medicine Association Netherlands (SVNL) the first Dutch Sleep Congress, SLEEP 2016.will be organized on the 3-4 November, 2016 in the Heerlickheijd, Ermelo. The conference is a unique interdisciplinary collaboration between different departments working in the field of Sleep, e.g. pulmonologists, neurologists,…

Human cellular differences in cAMP – CREB signaling correlate with light-dependent melatonin suppression and bipolar disorder

Various lines of evidence suggest a mechanistic role for altered cAMP-CREB (cAMP response element – binding protein) signaling in depressive and affective disorders. However, the establishment and validation of human inter-individual differences in this and other major signaling pathways has proven difficult. Here, we describe a novel lentiviral methodology to investigate signaling variation over long periods of…

Effects of a chronic reduction of short-wavelength light input on melatonin and sleep patterns in humans: Evidence for adaptation

Light is an important environmental stimulus for the entrainment of the circadian clock and for increasing alertness. The intrinsically photosensitive ganglion cells in the retina play an important role in transferring this light information to the circadian system and they are elicited in particular by short-wavelength light. Exposure to short wavelengths is reduced, for instance, in elderly…

The biological clock modulates the human cortisol response in a multiplicative fashion

Human cortisol levels follow a clear circadian rhythm. We investigated the contribution of alternation of sleep and wakefulness and the circadian clock, using forced desynchrony. Cortisol levels were best described by a multiplication of a circadian and a wake-time component. The human cortisol response is modulated by circadian phase. Exposure to stress at an unnatural phase, as in…