breath

The Sleep Doctor Michael Breus is back in the studio to solve all our snooze-related questions, and he also brings us a new toy! He's showing off the Renew SleepClock by Gear4, a sleep management tool that knows when you're sleeping and takes careful measurements to record your sleep patterns.

It also works as a tailored alarm clock that wakes you up at the lightest moment in your sleep cycle, so you'll arise super refreshed. Dr. Breus also gave us one to give away on a future show, so be sure to tune in to find out how to win.

As usual, the Doctor also answers questions from our listeners. Today he'll respond to inquiries about the correlation between memory and sleep, and whether or not we can learn things like languages and facts just by sleeping.… Read more

Within a couple years, a single exhale may tell us more about our personal health than merely the current state of our oral hygiene -- and without relying on dogs to sniff out our problems.

The answer lies in a device called the Single Breath Disease Diagnostics Breathalyzer. Back in 2010, Stony Brook University researcher Perena Gouma began testing an earlier iteration in preclinical trials; for use with diabetes patients; now she has developed a sensor that might enable the detection of a range of diseases in a single exhale.

The sensor, which lives in a device about half the … Read more

Everyone knows the galaxy can be an irritating place, with enough meddlesome muppets and tiresome teddy bears to strip the composure from even the most accomplished of Jedi masters.

But before you seize that innocent bystander by the neck and go all Dark Lord of the Sith on his unfortunate self, you should know there's a way to calm yourself. No, we don't mean a game of chess with a Wookie--we're talking about the new meditation video from Mr. Take-A-Deep-Breath himself, Darth Vader.

Produced by YouTuber Murdock129, who's also "worked with" Sega and Microsoft (… Read more

Last year, researchers at the Massachusetts Institute of Technology Media Lab unveiled a novel pulse-measuring technique that used a low-resolution Webcam. It worked by imaging the human face to detect the slightest changes in brightness resulting from blood flow.

Electronics maker Philips is now is bringing a strikingly similar technology to market with its Vital Signs Camera App, though with the rather important disclaimer that said app should not be considered a medical tool.

The app, released last week for 99 cents, uses the iPad's built-in camera to detect those tiny changes in color--which Philips calls "micro-blushes"… Read more

The airflow of a typical human breath travels at less than 2 meters per second. Instead of lamenting its weakness, engineers at the University of Wisconsin-Madison decided to try to make a material that could react to this airflow in such a way as to convert it to electrical energy.

So they turned to polyvinylidene fluoride (PVDF), a material in which an electrical charge can build up in response to applied mechanical stress. (There's even a name for this: the piezoelectric effect.) The trick, then, was to get this material thin enough to be sufficiently stressed by human breath.

"We calculated that if we could make this material thin enough, small vibrations could produce a microwatt of electrical energy that could be useful for sensors or other devices implanted in the face," says Xudong Wang, a materials science and engineering assistant professor who reports on these findings in the journal Energy & Environmental Science.

Wang's team had go about thinning this material very carefully, so as to preserve its piezoelectric properties. They used an ion-etching process that, with some improvements, might eventually enable them to control thickness to the submicron level.

The obvious benefits of using respiration to power biomedical devices (think blood glucose monitors or pacemakers) are that the source is local and it is consistent.… Read more

Engineers at the University of Utah predict that, in about five years, a network of wireless transceivers around a bed will be able to measure breathing rates without a single tube or wire being connected to the patient.

The uses of the system, which the team has dubbed BreathTaking, are obvious: patients in post-op, infants at risk of Sudden Infant Death Syndrome, or even people with sleep apnea.

And because the technology uses off-the-shelf transceivers similar to ones used in home computer networks, the system could cost less than current breathing monitors, said electrical engineer Neal Patwari, senior author of … Read more

A new nanomedicine device designed to monitor signaling gas in exhaled breath could help people monitor their own known diseases, as well as instantly detect new ones, according to research out of Stony Brook University.

"This is a single breath analysis diagnostic tool for monitoring disease or metabolic functions that can be used to check cholesterol levels, diabetes, and even lung cancer," says lead researcher Perena Gouma, whose work appears in the October 2010 issue of Sensor Letters. "Lung cancer is a silent killer that can only be detected when it's progressed vastly--but in the breath, … Read more

The holidays can be a stressful time. So can the weeks that follow. And Mondays, Mondays are always tough. The Swine Flu won't go away. Who's ready for financiapocalypse 2010? Glenn Beck says the country's ruined. Locusts! Ahhhhhhhh!!!

Whew, I need to relax. Easier said than done, right? Enter Pranayama and Stress Free with Deepak Chopra, two new iPhone apps designed to help you trade stressed-out for chilled-out.

Pranayama performs one basic function: guided breathing. According to the developer, research shows that 15 daily minutes of slow, deep breathing can improve overall health and even treat ailments … Read more

Breath might be tested to measure more than sobriety if researchers at the Russell Berrie Nanotechnology Institute in Haifa, Israel, have anything to say. They've developed a sensor made from gold nanoparticles that is able to distinguish between the breath of those with lung cancer from those without.

The sensing technology, according to lead author Hossam Haick, does not require the exhalation to be pre-treated in any way; the resulting breath test is simple, affordable, and portable. (In existing tests, preconcentration of the biomarkers is required to improve detection.)

"We demonstrated that our device has a potential not … Read more