Tagged: sleep

Food cravings and sleep - Sleep on it

Karyn O'Keeffe Sep 10, 2013

Some of you may have seen or heard last month’s news reports stating that when we are sleep deprived, we crave junk food.  These reports stemmed from a study conducted by Stephanie Greer and her colleagues at the University of California, Berkeley, which investigated changes in brain function after one night’s sleep deprivation, compared to a preceding night of healthy … Read More

BioMag Gets Rude Awakening Over Melatonin Claims - Molecular Matters

Michael Edmonds Jun 27, 2013

Early this year I came across a BioMag website which made the following claim: “BioMag’s scientifically engineered magnet system stimulates nerve endings which increases your body’s blood flow and helps produce a chemical called melatonin.” “Melatonin plays a key role in providing you with a deeper, more restorative sleep and alleviating insomnia related problems.” However, when I checked the scientific … Read More

Alcohol: sleep aid or hindrance? - Sleep on it

Karyn O'Keeffe Jun 11, 2013

Many of us are aware that we get off to sleep quite easily when we drink large amounts of alcohol before bed, and its sedating effects sometimes mean that alcohol is used as a sleep aid in those that are having trouble sleeping.  However, alcohol is very disruptive to sleep (some of us may have experienced this on nights where … Read More

Smartphone sleep apps - Sleep on it

Karyn O'Keeffe May 06, 2013

For a few months now, I’ve been playing around with a sleep app to get a better idea of how easy they are to use, what data I could collect, and whether I’d remember to input my sleep data every day.  When I first started using it, I was mainly interested in my sleep duration and sleep timing.  Recently though, … Read More

Should I cram all night before that exam? - Sleep on it

Karyn O'Keeffe Sep 25, 2012

I’m going to give a presentation to some law students in a couple of weeks. Along with providing information about normal sleep and what can affect it, I’d like to convey that short sleep is not a good strategy for optimising learning. Short sleep amongst students is not uncommon. As a teenager, our circadian body clock naturally drifts later. Those … Read More

Learning new information while we sleep - Sleep on it

Karyn O'Keeffe Aug 31, 2012

This week brings some exciting findings about sleep and learning.  In particular, in a study to be published in the journal Nature Neuroscience, Arzi and colleagues have shown that it’s possible to learn new information during sleep. To date, research has largely focussed on information storage during sleep rather than new information processing during sleep.  For example, we know … Read More