Brain-Training Apps: Neuroscience, or Pseudoscience?

I’m not old by any means, but I’ve become a little more forgetful lately.

This morning I poured myself a thermos of coffee and left for lab, abandoning it on the kitchen counter. I nearly forgot about the paper I had to review this week until I saw the deadline looming on my desk calendar. And I didn’t remember my friend’s birthday until logging into Facebook—and I’m always the one people rely on to remember birthdays.

I sure could use a little memory boost. Unfortunately, despite the growing popularity of brain-training apps and programs like Lumosity, CogniFit, CogMed, and Jungle Memory, I’m not going to find any help here.

They're totally bogus, you see.

Sleep Cycle App: Precise, or Placebo?

Thanks to the Internet, it's the age of self-diagnosis. People like to learn about (and treat) themselves through technology.

Especially when pretty graphs are involved (see fancy screenshot at right).

As a sleep researcher, I was interested in my friends' use of sleep-tracking apps, and I received a pretty positive response when I prompted them for their thoughts:

"I'm a believer."

"When I use it right, I feel less groggy."

The website sleepyti.me and smartphone apps like Sleep Cycle use the average human's sleep pattern to determine the best window of time that you should wake up. The idea is that interrupting the "wrong" sleep cycle stage, such as slow-wave ("deep") sleep or REM (rapid eye movement, when dreaming occurs), results in grogginess upon awakening, as many of us can attest. Sleep researchers call this phenomenon "sleep inertia."

It's such a big deal that, in the sleep laboratory, we as techs are instructed not to wake participants if they're in REM, even if the experimental recording time is over.

So when a friend told me that he only feels refreshed after (according to his sleep-tracking app) eight REM cycles, I got a little skeptical, given the average person will only experience four or five REM periods per night.

What's the verdict on sleep-tracking apps? How do they work, and how accurate are they? Is it all a big scam, or perhaps the placebo effect at work?