Dutch researcher Michel Varkevisser has discovered that chronic sleep complaints are associated with a reduced performance. This conclusion contradicts earlier findings. The researcher postulates that under normal daily circumstances, the lower performance level was probably not visible because the sleep sufferers invest extra energy in carrying out a task.
Research psychologist Michel Varkevisser investigated how sleeping problems affected the performances of employees under both laboratory and field conditions. In contrast to earlier findings, Varkevisser found that people who suffer from sleeping problems clearly performed less well when assessed under controlled laboratory conditions. This difference might be because Varkevisser is one of the few to have set up a completely-controlled laboratory experiment. In this set-up, posture, food intake and exposure to light were kept constant. Moreover the study subjects were not allowed to sleep over a 24-hour period.
After the controlled experiment, the researcher carried out a field study in which employees with several sleeping problems received a palmtop computer that contained three tests and a sleep diary. During this observation, the insomniacs reported a lot of subjective complaints such as tiredness, drowsiness, a worse mood and a reduced ability to concentrate. In contrast to the subjective complaints the researcher found no worsening in objective functioning.
Dr Michel Varkevisser | alfa
How cancer metastasis happens: Researchers reveal a key mechanism
19.01.2018 | Weill Cornell Medicine
Researchers identify new way to unmask melanoma cells to the immune system
17.01.2018 | Duke University Medical Center
Physicists have developed a technique based on optical microscopy that can be used to create images of atoms on the nanoscale. In particular, the new method allows the imaging of quantum dots in a semiconductor chip. Together with colleagues from the University of Bochum, scientists from the University of Basel’s Department of Physics and the Swiss Nanoscience Institute reported the findings in the journal Nature Photonics.
Microscopes allow us to see structures that are otherwise invisible to the human eye. However, conventional optical microscopes cannot be used to image...
On the way to an intelligent laboratory, physicists from Innsbruck and Vienna present an artificial agent that autonomously designs quantum experiments. In initial experiments, the system has independently (re)discovered experimental techniques that are nowadays standard in modern quantum optical laboratories. This shows how machines could play a more creative role in research in the future.
We carry smartphones in our pockets, the streets are dotted with semi-autonomous cars, but in the research laboratory experiments are still being designed by...
What enables electrons to be transferred swiftly, for example during photosynthesis? An interdisciplinary team of researchers has worked out the details of how...
For the first time, scientists have precisely measured the effective electrical charge of a single molecule in solution. This fundamental insight of an SNSF Professor could also pave the way for future medical diagnostics.
Electrical charge is one of the key properties that allows molecules to interact. Life itself depends on this phenomenon: many biological processes involve...
At the JEC World Composite Show in Paris in March 2018, the Fraunhofer Institute for Laser Technology ILT will be focusing on the latest trends and innovations in laser machining of composites. Among other things, researchers at the booth shared with the Aachen Center for Integrative Lightweight Production (AZL) will demonstrate how lasers can be used for joining, structuring, cutting and drilling composite materials.
No other industry has attracted as much public attention to composite materials as the automotive industry, which along with the aerospace industry is a driver...
08.01.2018 | Event News
11.12.2017 | Event News
08.12.2017 | Event News
23.01.2018 | Life Sciences
23.01.2018 | Earth Sciences
23.01.2018 | Physics and Astronomy