Brain wave activity associated with circadian preferences

November 3, 2017, University of Helsinki
Credit: CC0 Public Domain

A new study from the University of Helsinki, Finland, shows that individual circadian preference is associated with brain activity patterns during the night.

Sleep spindles are bursts of oscillatory brain visible on an EEG that occur mainly during stage 2 sleep. Sleep spindles are linked for example to sleep maintenance and strengthening of the during sleep.

The study explored the association between individual circadian preference and sleep activity among 170 17-year-old participants, who underwent a sleep EEG monitoring at their home environment.

"We observed a significantly weaker spindle activity among the morning preference group compared to  other groups. The spindle activity also decreased more towards the morning hours," explains the principal investigator, Professor Anu-Katriina Pesonen.  – This might be a potential facilitator underlying earlier circadian rhythm.

The study published in Scientific Reports shows for the first time a link between circadian and sleep maintaining sleep microstructures, indicated by sleep spindle activity.

The research was conducted in Sleep & Mind -research group at the University of Helsinki, Faculty of Medicine.

Explore further: Better sleep, less fear

More information: Ilona Merikanto et al. Circadian preference towards morningness is associated with lower slow sleep spindle amplitude and intensity in adolescents, Scientific Reports (2017). DOI: 10.1038/s41598-017-13846-7

Related Stories

Better sleep, less fear

October 23, 2017
Higher quality sleep patterns are associated with reduced activity in brain regions involved in fear learning, according to a study of young adults published in Journal Neuroscience. The results suggest that baseline sleep ...

New insights into how sleep helps the brain to reorganise itself

October 2, 2017
A study has given new insights into how sleep contributes to brain plasticity – the ability for our brain to change and reorganise itself – and could pave the way for new ways to help people with learning and memory disorders.

Sleep and Alzheimer's disease connection

October 17, 2017
How often do you get a good night's sleep? Centers for Disease Control and Prevention guidelines recommend adults get an average of at least seven hours of sleep a night. Dr. Ronald Petersen, a Mayo Clinic neurologist, says ...

Information processing breakdown in sleep-deprived rats

September 25, 2017
Sleep deprivation may disrupt the brain's ability to integrate information over time, potentially contributing to the decline in cognitive performance observed during extended time awake, suggests a study in rats published ...

Late sleep-wake time preference linked to depression in individuals with diabetes

April 2, 2017
People with type 2 diabetes who are "night owls" and prefer the evening for activity report having more symptoms of depression than those who are early to bed and early to rise, regardless of the quality of their sleep, a ...

Human brain clocks exposed: Effects of circadian clocks and sleep loss vary across brain regions

August 11, 2016
Ever wondered what happens inside your brain when you stay awake for a day, a night and another day, before you finally go to sleep? In a new study published today in the journal Science, a team of researchers from the University ...

Recommended for you

Engineered enzyme eliminates nicotine addiction in preclinical tests

October 17, 2018
Oct. 17, 2018—Scientists at Scripps Research have successfully tested a potential new smoking-cessation treatment in rodents.

Self-lubricating latex could boost condom use: study

October 17, 2018
A perpetually unctuous, self-lubricating latex developed by a team of scientists in Boston could boost the use of condoms, they reported Wednesday in the journal Royal Society Open Science.

How healthy will we be in 2040?

October 17, 2018
A new scientific study of forecasts and alternative scenarios for life expectancy and major causes of death in 2040 shows all countries are likely to experience at least a slight increase in lifespans. In contrast, one scenario ...

Study finds evidence of intergenerational transmission of trauma among ex-POWs from the Civil War

October 16, 2018
A trio of researchers affiliated with the National Bureau of Economic Research has found evidence that suggests men who were traumatized while POWs during the U.S. Civil War transmitted that trauma to their offspring—many ...

Father's nicotine use can cause cognitive problems in children and grandchildren

October 16, 2018
A father's exposure to nicotine may cause cognitive deficits in his children and even grandchildren, according to a study in mice publishing on October 16 in the open-access journal PLOS Biology by Pradeep Bhide of Florida ...

Many supplements contain unapproved, dangerous ingredients: study

October 13, 2018
(HealthDay)—U.S. health officials have issued more than 700 warnings during the last decade about the sale of dietary supplements that contain unapproved and potentially dangerous drug ingredients, new research reveals.

0 comments

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.