Find Information About:

Drugs & Supplements

Get information and reviews on prescription drugs, over-the-counter medications, vitamins, and supplements. Search by name or medical condition.

Pill Identifier

Pill Identifier

Having trouble identifying your pills?

Enter the shape, color, or imprint of your prescription or OTC drug. Our pill identification tool will display pictures that you can compare to your pill.

Get Started

My Medicine

Save your medicine, check interactions, sign up for FDA alerts, create family profiles and more.

Get Started

WebMD Health Experts and Community

Talk to health experts and other people like you in WebMD's Communities. It's a safe forum where you can create or participate in support groups and discussions about health topics that interest you.

  • Second Opinion

    Second Opinion

    Read expert perspectives on popular health topics.

  • Community


    Connect with people like you, and get expert guidance on living a healthy life.

Got a health question? Get answers provided by leading organizations, doctors, and experts.

Get Answers

Sign up to receive WebMD's award-winning content delivered to your inbox.

Sign Up

Brain & Nervous System Health Center

Font Size

High-Frequency Noise Boosts Math Skills in Study

But the treatment isn't ready for prime time yet, expert says


Some of the participants received transcranial random noise stimulation when they performed the math tasks. Those participants were two to five times better at learning things, he said. And, six months after the stimulation, they were 28 percent better at making calculations than the other participants.

Scientists aren't sure why the stimulation treatment may boost learning and thinking, but Cohen Kadosh said it may have something to do with activating neurons in the brain.

Why might brain-zapping be a good thing? "We all want to improve our learning and to make it faster if possible, and we also want to help those who have problems in learning" due to disease, developmental problems or aging, he said. Also, "around 20 percent of the population finds math challenging."

However, don't try this at home, advised Dr. Colleen Loo, a brain researcher and professor of psychiatry at the University of New South Wales in Australia, who called the research "promising."

"If the electrodes are not correctly applied, it could cause scalp burns," Loo said. "Also, the exact placement of the positive and negative electrodes is essential, otherwise you could create quite different brain effects, including negative effects. There is still a lot more we need to know about this technology."

What's next? "There is a way to go, but this shows that it is feasible to improve human cognition and brain function in a long-lasting fashion," Cohen Kadosh said, "and this will hopefully trigger further research that will have more validity."

1 | 2

Today on WebMD

nerve damage
Learn how this disease affects the nervous system.
senior woman with lost expression
Know the early warning signs.
woman in art gallery
Tips to stay smart, sharp, and focused.
medical marijuana plant
What is it used for?
senior man
boy hits soccer ball with head
red and white swirl
marijuana plant
brain illustration stroke
nerve damage
Alzheimers Overview
Graphic of number filled head and dna double helix