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Could we soon send emails 'telepathically'?

Scientist transmits message into the mind of a colleague 5,000 miles away using brain waves
Scientists used EEG headsets to record electrical activity in the brain

Electrical activity from words ‘hola’ and ‘ciao’ were converted into binary
The greeting was sent from Thiruvananthapuram, India to Strasbourg
A computer translated the message and then used electrical stimulation to implant it in the receiver’s mind, appearing as specific flashes of light
According to the researchers, this is the first time humans have sent a message almost directly into each other’s brains

By ELLIE ZOLFAGHARIFARD FOR MAIL ONLINE

Read more: http://www.dailymail.co.uk/sciencetech/article-2737532/Could-soon-send-emails-telepathically-Scientist-transmits-message-mind-colleague-5-000-miles-away-using-brain-waves.html#ixzz3Bpngm4bK 

Pilots banned from being Uber drivers in the sky

[Credit: Brianc/Flickr]

Date: August 13, 2014

A cure for a range of blood disorders and immune diseases is in sight, according to scientists who have unravelled the mystery of stem cell generation.

In Honor of Johnny Winter, Rest in Peace.

Birth name:  John Dawson Winter III

Born:  February 23, 1944 Beaumont, Texas, US

Died:  July 16, 2014 (aged 70) St Gallen, Switzerland 

 

Synchronized Brainwaves 

 

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MIT neuroscientists found that brain waves originating from the striatum (red) and from the prefrontal cortex (blue) become synchronized when an animal learns to categorize different patterns of dots.

Credit: Jose-Luis Olivares/MIT

[Click to enlarge image]

 

The human mind can rapidly absorb and analyze new information as it flits from thought to thought. These quickly changing brain states may be encoded by synchronization of brain waves across different brain regions, according to a new study from MIT neuroscientists.

The researchers found that as monkeys learn to categorize different patterns of dots, two brain areas involved in learning -- the prefrontal cortex and the striatum -- synchronize their brain waves to form new communication circuits. 

"We're seeing direct evidence for the interactions between these two systems during learning, which hasn't been seen before. Category-learning results in new functional circuits between these two areas, and these functional circuits are rhythm-based, which is key because that's a relatively new concept in systems neuroscience," says Earl Miller, the Picower Professor of Neuroscience at MIT and senior author of the study, which appears in the June 12 issue of Neuron.

There are millions of neurons in the brain, each producing its own electrical signals. These combined signals generate oscillations known as brain waves, which can be measured by electroencephalography (EEG). The research team focused on EEG patterns from the prefrontal cortex -- the seat of the brain's executive control system -- and the striatum, which controls habit formation.

The phenomenon of brain-wave synchronization likely precedes the changes in synapses, or connections between neurons, believed to underlie learning and long-term memory formation, Miller says. That process, known as synaptic plasticity, is too time-consuming to account for the human mind's flexibility, he believes.

"If you can change your thoughts from moment to moment, you can't be doing it by constantly making new connections and breaking them apart in your brain. Plasticity doesn't happen on that kind of time scale," says Miller, who is a member of MIT's Picower Institute for Learning and Memory. "There's got to be some way of dynamically establishing circuits to correspond to the thoughts we're having in this moment, and then if we change our minds a moment later, those circuits break apart somehow. We think synchronized brain waves may be the way the brain does it."

The paper's lead author is former Picower Institute postdoc Evan Antzoulatos, who is now at the University of California at Davis.

Humming together

Miller's lab has previously shown that during category-learning, neurons in the striatum become active early, followed by slower activation of neurons in the prefrontal cortex. "The striatum learns very simple things really quickly, and then its output trains the prefrontal cortex to gradually pick up on the bigger picture," Miller says. "The striatum learns the pieces of the puzzle, and then the prefrontal cortex puts the pieces of the puzzle together."

 In the new study, the researchers wanted to investigate whether this activity pattern actually reflects communication between the prefrontal cortex and striatum, or if each region is working independently. To do this, they measured EEG signals as monkeys learned to assign patterns of dots into one of two categories.

At first, the animals were shown just two different examples, or "exemplars," from each category. After each round, the number of exemplars was doubled. In the early stages, the animals could simply memorize which exemplars belonged to each category. However, the number of exemplars eventually became too large for the animals to memorize all of them, and they began to learn the general traits that characterized each category.

By the end of the experiment, when the researchers were showing 256 novel exemplars, the monkeys were able to categorize all of them correctly.

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