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Gizmorama - April 18, 2016

Good Morning,


Today, I have a story for you about brain stimulation enhancing creativity. You're sure to get a charge out of it.

Learn about this and more interesting stories from the scientific community in today's issue.

Until Next Time,
Erin


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*-- Study: Electrical brain stimulation enhances creativity --*

WASHINGTON - In a series of recent tests, team of psychologists and neurologists at Georgetown University showed electric brain stimulation can enhance creativity.

When scientists used Transcranial Direct Current Stimulation, or tDCS, to stimulate a portion of the brain linked with creative thinking, study participants responded more creatively to a series of verbal cues.

"We found that the individuals who were most able to ramp up activity in a region at the far front of the brain, called the frontopolar cortex, were the ones most able to ramp up the creativity of the connections they formed," Adam Green, a psychology professor at Georgetown, explained in a news release.

"Since ramping up activity in frontopolar cortex appeared to support a natural boost in creative thinking, we predicted that stimulating activity in this brain region would facilitate this boost, allowing people to reach higher creative heights," Green added.

Participants were able to forge more creative analogical links between word sets and produce more creative associations between words when their frontopolar cortex was stimulated via tDCS.

"This work is a departure from traditional research that treats creativity as a static trait," Green said. "Instead, we focused on creativity as a dynamic state that can change quickly within an individual when they 'put their thinking cap on.'"

Green and his colleagues believe their findings -- detailed in the journal Cerebral Cortex -- could be used to help patients with brain disorders better express themselves.

"People with speech and language difficulties often can't find or produce the words they need," added Peter Turkeltaub, a cognitive neurologist at Georgetown University Medical Center. "Enhancing creative analogical reasoning might allow them to find alternate ways of expressing their ideas using different words, gestures, or other approaches to convey a similar meaning."


*-- Russian scientists unveil quantum communication device --*

ST. PETERSBURG, Russia - Researchers with ITMO University Russia say they've created a long-distance quantum communication device that theoretically can't be hacked.

The device embeds information in a single photon, which is sent across optical fibers stretching up to 155 miles long. Should hackers attempt to intercept and spy on the photon, it will be irreversibly altered.

The research team at ITMO developed the technology with the help of scientists from Heriot-Watt University in Edinburgh in Scotland.

Encoded information is sent via a laser beam that passes through an electro-optical phase modulator. The modulator splits the beam into different wavelengths. A modulator on the other end of the cable splits the photon beam once more.

Depending on the phase shifts of the individual wavelengths, the waves either enhance or cancel each other. Overlapping wavelengths are translated into binary digits of 1 and 0. The combination of digits form a quantum key securing the embedded information. The researchers say their system has shown high stability.

"All waves undergo random changes while passing through the fiber," Oleg Bannik, a researcher at ITMO's Quantum Information Centre, said in a press release. "But these changes are always identical and get smoothed over during the additional run through the receiver's modulator. In the end, the receiver observes the same combination as the sender."

Researchers say their new device, the first in Russia, has a bitrate and distance on par with the most advanced analogues.

"To transmit quantum signals, we use the so-called side frequencies," explained Artur Gleim, head of the Quantum Information Centre. "This unique approach gives us a number of advantages, such as considerable simplification of the device architecture and large pass-through capacity of the quantum channel. In terms of bitrate and operating distance our system is comparable to absolute champions in the field of quantum communications."

To steal or spy on a quantum key, a third party must measure it, but doing so introduces anomalies that the two communicating parties can detect. For this reason, scientists consider quantum communications essentially "unhackable."

Researchers described the new device this week in the Optics Express journal. They believe the new technology can be used to protect all kinds of information.

"Down the track, this new approach can enable smooth coexistence of numerous data streams with different wavelengths in one single optical cable," study co-auhtor Robert Collins, a quantum scientist at Heriot-Watt University, told Russian news agency TASS. "On top of it, these quantum streams can be fed into the already existing fiber optic lines along with conventional communications."

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