HONOUR: Reading from an iPad before bed affects your sleep quality

In news that should surprise no one, science has now definitively determined that reading

from a tablet before your bedtime affects your sleep quality. Sure, “affects” is a bit loose as

a term, and to be fair, it didn’t take tablet readers any longer to fall or asleep (nor did they

sleep any less), but all the same, their brain activity was decidedly different from that of

physical book readers. According to a new study from scientists at the University of Bergen

in Norway, pre-bedtime iPad users “felt less sleepy and had different electrical activity in

the brain during sleep” when compared to their friends who read from paper.

“Since light has an alerting effect, we predicted a lower sleepiness in the iPad condition at

bedtime compared to the book condition,” lead author Janne Gronli of the University of

Bergen in Norway told Reuters. This was accurate, Gronli noted, but despite not feeling as

sleepy, tablet readers were still able to fall asleep at the same rate as non-iPad readers.

That said, Gronli continued, “We found a delay of 30 minutes in the generation of the

restorative slow waves during sleep in the iPad condition.”

The study used a rather small sample size of just 16 subjects between the ages of 22 and

33. In conducting their experiment, researchers examined polysomnographic data from

three nights of participants’ sleep — one for a control, one for 30 minutes of pre-sleep iPad

reading, and one for 30 minutes of physical book reading. In this last situation, the room

was illuminated by reading lights in the subjects’ own rooms. Ultimately, participants noted

that they felt sleepier after reading an actual book, and after they read from an iPad,

their EEG readings displayed “delayed and reduced slow wave activity, representing deep

sleep, in the brain after sleep onset.”

This is concerning, Gronli says, because “slow wave sleep EEG activity is important for the restorative

effect of our sleep.”

The blue light emitted by iPads and other such devices have long been cited as potential problems for

sleep. “To avoid increased activation before bedtime the bedroom should be used to sleep in, not for

work or being on social media,” Gronli advised.

So if you’re having trouble sleeping, maybe consider actually putting all those pesky electronics away,

and give your brain a chance to fully shut itself down when you’re looking for some shuteye.

HONOUR