Rhythmic Human

A Blog Around The Clock

Category archives for Rhythmic Human

Sleep News

More stuff from SLEEP 2007, the 21st Annual Meeting of the Associated Professional Sleep Societies: Sleep Deprivation Affects Eye-steering Coordination When Driving: Driving a vehicle requires coordination of horizontal eye movements and steering. Recent research finds that even a single night of sleep deprivation can impact a person’s ability to coordinate eye movements with steering.…

Rotating shifts shorten lives

This is the first study I know that directly tested this – the effects of rotating shifts on longevity – in humans, though some studies of night-shift nurses have shown large increases in breast cancers, stomach ulcers and heart diseases, and similar studies have been done in various rodents and fruitflies: Working in shifts shortens…

The Owls Of The World, Unite!

Apparently, in Denmark, the ‘larks’ (early-risers) are called ‘A-people’ while ‘owls’ (late-risers) are ‘B-people’. We all know how important language is for eliciting frames, so it must feel doubly insulting for the Danish night owls. Today, in the age of the internets, telecommuting and fast-increasing knowledge about our rhythms and sleep, retaining the feudal/early capitalism…

It has been known for quite a while now that bipolar disorder is essentially a circadian clock disorder. However, there was a problem in that there was no known animal model for the bipolar disorder. Apparently that has changed, if this report is to be believed: “There’s evidence suggesting that circadian genes may be involved…

Daylight Saving Time

This is the time when everyone is talking about the Daylight Saving Time and I always feel pressure to blog about it from a chronobiological perspective. And I always resist. As I will this year. So, here are a couple of related links instead: Larry provides a brief history of time zones and the Dalyight…

The most exciting thing about this study is that this is, as far as I am aware, the first instance in which it was shown that a circadian clock gene has any effect on sleep apart from timing of it, i.e., on some other quality or quantity of sleep (not just when to fall asleep…

This is a story about two mindsets – one scientific, one not – both concerned with the same idea but doing something very different with it. Interestingly, both arrived in my e-mail inbox on the same day, but this post had to wait until I got out of bed and started feeling a little bit…

Seasonality of Pre-term Births

Matt found a conference paper that shows that the risk of pre-term birth is the lowest in spring, rising through summer and fall and the greatest in winter. The paper, IMHO erroneously, focuses on the time of conception (because it is an easy marker used to calculate the supposed birth-date). Matt correctly shifts the discussion…

Greenwich time to remain Greenwich time

In light of my post earlier today about the discrepanices between ‘real time’ and ‘clock time’ (or ‘social time’), it is heartening that the Parliament in the U.K. wisely decided not to switch their clocks to the time the rest of Europe observes. If they did, they would be seriously out of whack. After all,…

New Model for Interval Timing

While study of Time-Perception is, according to many, a sub-discipline of chronobiology, I personally know very little about it. Time perception is defined as interval timing, i.e., measuring duration of events (as opposed to counting, figuring which one of the two events happened first and which one second, or measuring time of day or year).…