how to center monitor display upon awakening from sleep

An electroencephalogram (EEG) machine was used to measure brain activity while the participants slumbered.

However, one was made up of a high proportion of blue light, which would be picked up by the specialised retinal ganglion cells, whereas the other had a far lower proportion of blue light and so wouldn’t be picked up by these cells. The two different lights would have looked nearly identical to the participants. About a week later, the participants had a night when they were exposed to a different light condition. The participants’ average bedtime was 11pm. On one of the nights they spent in the lab, the participants were exposed to one type of light from a screen for an hour, ending 50 minutes before they typically went to sleep. The participants, with an average age of 23, all had healthy sleep histories.

The researchers tested 29 people in a sleep lab with exposure to two types of light. These eye cells, alongside cones and rods, are activated by light, but ipRGCs are particularly sensitive to blue light and are thought to play a major role in setting the body’s internal circadian rhythms, says Blume. How the immune system enables the body to heal itself Daniel Davis at New Scientist Live this October

How to center monitor display upon awakening from sleep