Rhythmic Human

A Blog Around The Clock

Category archives for Rhythmic Human

Larks, Owls and Hummingbirds

I regularly get Google News alerts for articles that contain the word “circadian” in them. Most of them are not too exciting, but when a really good one comes along, I like to point it out to you. Today, you should go and read Larks, Owls and Hummingbirds, a guest post by Leon Kreitzman over…

Ask the pilot: Ask yourself this: Whom would you prefer at the controls of your plane on a stormy night, a pilot who smoked a joint three days ago, or one who had six hours of sleep prior to a 13-hour workday in which he’s performed half a dozen takeoffs and landings? The first pilot…

The Scientist special topic: Sleep

Nice four articles: The Gears of the Sleep Clock By Allan Pack: When people have trouble sleeping–such as, in extreme cases, shift workers–those problems are not always rooted in disturbances in circadian rhythm, argues the University of Pennsylvania’s ALLAN PACK. Instead, his studies of sleep have shown that the master clock is only one player…

Human circadian rhythms and sleep

BBC 4 had a fascinating half-hour show yesterday, interviewing Till Roenneberg and Helen Emsellem on all sorts of fascinating new findings in the field of human chronobiology. Well worth a listen. But hurry up as the podcast is available only for another six days! (what do they do afterwards? why such a limited time? archives…

Circadian rhythms: Of owls, larks and alarm clocks in Nature News (download PDF while the article is still freely available), written by Melissa Lee Phillips is an excellent overview of the current state of knowledge about human circadian rhythms, underlying genetics, and circadian disorders. I get several Google Alerts every day for media articles about…

Daylight Saving Time

Yup, it’s tonight. If you were around here a few months ago, the day after the Fall Back day, you probably read this post. Disregarding the debate over rhetoric of science, that is probably my best, most detailed explanation for what happens to our bodies on those too strange days of the year – Spring…

How rumors spread….

NYTimes: Eliminating daylight time would thus accord with President-elect Barack Obama’s stated goals of conserving resources, saving money, promoting energy security and reducing climate change. Eugene Sandhu: In order to conserve energy, President-elect Barak Obama should eliminate daylight saving time. Boing Boing: President-elect Obama wants to get rid of daylight saving time in the United…

Related to this discussion, there is a new interesting study out – Daily rhythms in blood vessels may explain morning peak in heart attacks: It’s not just the stress of going to work. Daily rhythms in the activity of cells that line blood vessels may help explain why heart attacks and strokes occur most often…

If you live in (most places in) the United States as well as many other countries, you have reset your clocks back by one hour last night (or last week). How will that affect you and other people? One possibility is that you are less likely to suffer a heart attack tomorrow morning than on…

‘Normal’ body temperature? Not really.

Once a year, I go back to my alma mater and do a guest lecture about biological clocks in an Anatomy & Physiology class. Knowing how many pre-meds are among the 200 students in the room, I try to start with some examples of rhythms in human physiology (and disease), and the first one is…