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Brain implant reveals the neural patterns of attention

February 25, 2010

A paralyzed patient implanted with a brain-computer interface device has allowed University of Chicago scientists to determine the relationship between brain waves and attention.

Using a small chip containing nearly 100 microelectrodes that was previously implanted in a patient’s primary motor cortex, they found that beta waves indicate how much attention a subject is paying to the task at hand, while slower delta waves act as an internal metronome,… read more

Brain implant gives early warning of epileptic seizure

May 2, 2013


A new brain implant can warn of seizures minutes before they strike, enabling them to get out of situations that could present a safety risk, New Scientist reports.

With funding from NeuroVista, a medical device company in Seattle, Mark Cook of the University of Melbourne and his colleagues have developed a brain implant that consists of a small patch of electrodes that measure brain… read more

Brain Implant Cuts Seizures

December 10, 2009


The Responsive Neurostimulator, a brain implant designed by Neuropace to detect and block the onset of seizures, can significantly reduce their frequency in people with difficult-to-treat epilepsy.

The device, which consists of a neurostimulator that’s smaller than a deck of cards, a battery, and a small computer, continuously monitors electrical activity. It’s surgically implanted into a hollowed out part of the skull, along with a set of electrical leads… read more

Brain implant could prevent epileptic seizures

August 20, 2007

Neuropace of Mountain View, California, is testing in humans an implant that detects seizures and then delivers an electric current to stop them.

Brain imaging reveals why we remain optimistic in the face of reality

October 10, 2011

prefrontal cortex

People who are very optimistic about the outcome of events tend to learn only from information that reinforces their rose-tinted view of the world, related to a “faulty” function of their frontal lobes, researchers at the Wellcome Trust Centre for Neuroimaging at UCL (University College London) have shown.

This is a problem that has puzzled scientists for decades: why is human optimism is so pervasive,… read more

Brain Imaging Reveals New Language Circuits

December 13, 2004

Researchers using diffusion tensor (DT) MRI have found a third area of the human brain, dubbed “Geschwind’s territory,” that is part of human language circuits along with Broca’s and Wernicke’s areas.

“There are clues that the parallel pathway network we found is important for the acquisition of language in childhood,” said Marco Catani, M.D., from the Institute of Psychiatry at King’s College London. “Geschwind’s territory is the last area… read more

Brain imaging reveals how we learn from our competitors

October 14, 2010

Our neural activity tends to be stimulated by our competitor’s errors (as in the example shown here) rather than their successes. (Bristol University)

To reveal how people and animals learn from failure and success, Bristol University researchers scanned the brains of players as they battled against an artificial opponent in a computer game.

In the game, each player took turns with the computer to select one of four boxes whose payouts were simulating the ebb and flow of natural food sources.

Players were able to learn from their own successful selections… read more

Brain imaging ready to detect terrorists, say neuroscientists

September 23, 2005

Brain-imaging techniques that reveal when a person is lying are now reliable enough to identify criminals, with 99% accuracy, claim University of Pennsylvania School of Medicine researchers.

When someone lies, their brain inhibits them from telling the truth, and this makes the frontal lobes more active, which can be monitored with functional magnetic resonance imaging (fMRI).

Brain imaging provides window into consciousness

February 25, 2011

Using a sophisticated imaging test to probe for higher-level cognitive functioning in severely brain-injured patients provides a window into consciousness — but the view it presents is one that is blurred in fascinating ways, say researchers at Weill Cornell Medical College in the Feb. 25 online edition of the journal Brain.

In a novel study of six patients ranging in their function from minimally conscious state to the locked-in… read more

Brain imaging may improve anxiety treatment

May 9, 2008

University of Wisconsin, Madison and Dartmouth College researchers found that functional magnetic resonance imaging (fMRI) results could predict whether venlafaxine (an antidepressant that also treats anxiety) would be effective in patients with generalized anxiety disorder (GAD).

They found that the larger the prefrontal cortex reaction, and the smaller the amygdala reaction, the more likely it was that the patient had a positive response to the venlafaxine.

There are… read more

Brain Imaging Lets Vegetative Patient Communicate

February 4, 2010

UK Medical Research Council

A patient thought to be in a vegetative state was able to correctly answer a series of yes or no questions, with responses interpreted via functional MRI (fMRI) brain imaging, a study published today in the New England Journal of Medicine revealed.

Researchers aim to develop simplified, inexpensive alternates to fMRI such as EEG devices, and brain cognitive interfaces that will allow patients to interact with their environment.

Brain Images Reveal the Secret to Higher IQ

March 24, 2009

Myelin (the fatty layer of insulation coating neural wiring in the brain) plays a critical role in determining intelligence, and is largely genetically determined, a team headed by UCLA neuroscientists has found.

Brain Images Predict Suicide Risk

April 22, 2010

Predict Stack

UCLA researchers are using “quantitative EEG” (QEEG) — an algorithm that mathematically analyzes data from EEG electrodes to transform the results into a map of brain activity — to detect markers of antidepressant-induced suicidal thoughts.

Patients on antidepressants who indicated an increase in suicidal thoughts showed a drastic decrease in activity in the midline- and right-frontal (MRF) portion of the brain just 48 hours after starting their meds–six times… read more

Brain ‘hears’ voices when reading direct speech

July 27, 2011

When reading direct quotations, the brain “hears” the voice of the speaker, researchers at the University of Glasgow have found, using functional magnetic resonance imaging (fMRI).

This shows that readers are likely to engage in perceptual simulations, or spontaneous imagery, of the reported speaker’s voice when reading direct speech, the researchers said.

Ref.: Bo Yao, Pascal Belin, and Christoph Scheepers, Silent Reading of Direct… read more

Brain function — a new way to measure the economic impacts of aging

December 21, 2011

Cognitive function is a better indicator of the impacts of aging on an economy than age-distribution, since chronological age imposes less of a social and economic burden if the population is “functionally” younger, according to a study by the International Institute for Applied Systems Analysis (IIASA).

The study finds that one standardized indicator of cognitive ability — memory recall — is better in countries where… read more

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