bothernews

Archive for the ‘Warfare’ Category

Control of traveling waves in the Mammalian cortex.

leave a comment »

January, 2005

Source URL:  https://www.ncbi.nlm.nih.gov/pubmed/15698234?

Control of traveling waves in the Mammalian cortex.

Richardson KA1, Schiff SJ, Gluckman BJ.
Author information
Krasnow Institute for Advanced Study
George Mason University
Fairfax, Virginia 22030, USA.

Abstract

We experimentally confirmed predictions that modulation of the neuronal threshold with electrical fields can speed up, slow down, and even block traveling waves in neocortical slices. The predictions are based on a Wilson-Cowan-type integro-differential equation model of propagating neocortical activity. Wave propagation could be modified quickly and reversibly within targeted regions of the network. To the best of our knowledge, this is the first example of direct modulation of the threshold to control wave propagation in a neural system.

We therefore predicted that we could speed up, slow down, and block propagating neural activity in neocortical slices with the application of electric fields. Furthermore, we predicted that we could affect wave propagation either globally, over the whole slice, or locally, in a specific region of the slice, by changing the geometry of the applied field.

We experimentally confirmed theoretical predictions that threshold modulation can increase or decrease the propagation speed of, and even block, cortical traveling waves. To the best of our knowledge, this is the first example of direct modulation of threshold to control wave propagation in a neural system. Such modulation could be applied rapidly in a locally precise manner. Since neural systems permit direct access to threshold, these findings open avenues to novel neural prosthetic applications including control and containment of seizure propagation.

Related:

Scientists discover that our brain waves can be sent by electrical fields – ScienceAlert

with one comment

PETER DOCKRILL

15 JAN 2016

“The implications are that such directed fields can be used to modulate both pathological activities, such as seizures, and to interact with cognitive rhythms that help regulate a variety of processes in the brain.”

The results indicate that electric fields (ephaptic effects) are capable of mediating propagation of self-regenerating neural waves,” they write. “This novel mechanism coupling cell-by-volume conduction could be involved in other types of propagating neural signals, such as slow-wave sleep, sharp hippocampal waves, theta waves, or seizures.”

If their findings, which are reported in The Journal of Neuroscience, can be expounded in further studies, it could help us to better understand how brain waves are associated with things like memory, epilepsy, and healthy physiology.

Source URL:   http://www.sciencealert.com/scientists-discover-new-method-of-brain-wave-transmission-electrical-fields

Odin – IARPA style

leave a comment »

Written by bothernews

June 3, 2017 at 12:46 am

US military satellite suffers “catastrophic event”

leave a comment »

 

Linked Report is by Matthew Sparkes

10:39AM GMT 02 Mar 2015

A US military satellite exploded after detecting an unexplained “sudden spike in temperature”, sending dozens of chunks of debris tumbling into different orbits around Earth.

Air Force Space Command confirmed to SpaceNews.com that the “catastrophic event” came after “a sudden spike in temperature” was detected, followed by “an unrecoverable loss of attitude control”.

The satellite was an ageing component of the Defense Meteorological Satellite Program which the US military began developing the in the 1960s to help plan reconnaissance and surveillance missions.

The lost satellite was the 13th to be launched as part of DMSP, designated DMSP-F13, and had been in Earth orbit since 1995.

Like all DMSP satellites it orbited the earth at an altitude of around 500 miles in a “sun-synchronous orbit” – meaning that they flew in a path taking in the north and south poles.

On each path around the earth, which took roughly 101 minutes, they would see a slightly different part of the planet. This would give each satellite a complete view of the entire planet’s surface twice a day.

US military satellite explodes above Earth – Telegraph

Written by bothernews

March 3, 2015 at 1:08 am

‘Cyber war games’ to be staged by UK and US

leave a comment »

 

15 January 2015

The UK and US are to carry out "war game" cyber attacks on each other as part of a new joint defence against online criminals.

The first exercise, a staged attack on the financial sector, will take place later this year, Downing Street said.

The "unprecedented" arrangement between the two countries was announced as Prime Minister David Cameron held talks with US President Barack Obama.

Agents will also co-operate in "cyber cells" on both sides of the Atlantic.

Downing Street said this was the first "cyber cell" the UK had established with another country.

The measures come in the wake of recent cyber attacks on Sony Pictures and US Central Command.

Full Story:  BBC News – ‘Cyber war games’ to be staged by UK and US

Secret state: Trevor Paglen documents the hidden world of governmental surveillance, from drone bases to "black sites"

leave a comment »

 

Peter Popham Author Biography

Sunday 15 June 2014

[…]

Since he was a postgraduate geography student at UCLA 10 years ago, Paglen has dedicated himself to a very 21st-century challenge: seeing and recording what our political masters do everything in their power to render secret and invisible.

Above our heads more than 200 secret American surveillance satellites constantly orbit the Earth: with the help of fanatical amateur astronomers who track their courses, Paglen has photographed them. A secret air force base deep in the desert outside Las Vegas is the control centre for the US’s huge fleet of drones: Paglen has photographed these tiny dots hurtling through the Nevada skies. To carry out the extraordinary rendition programme which was one of President George W Bush’s answers to the 9/11 attacks, seizing suspects from the streets and spiriting them off to countries relaxed about torture, the CIA created numerous front companies: grinding through flight records and using the methods of a private detective, Paglen identified them, visiting and covertly photographing their offices and managers. The men and women who carried out the rendition programme were equipped with fake identities: Paglen has made a collection of these people’s unconvincing and fluctuating signatures, "people," as he puts it, "who don’t exist because they’re in the business of disappearing other people".

[…]

"The war on terror was getting started and I very early on got the sense that these blank spots on the map were somehow paradigmatic of something that was happening politically." As the World Trade Center smouldered, Vice-President Dick Cheney announced that the nation would have to engage its "dark side" to find the culprits. "We’ve got to spend time in the shadows," he said. "It’s going to be vital for us to use any means at our disposal, basically, to achieve our objective." Paglen had his cue.

In his quest to unveil a world committed to staying hidden, his most bizarre discovery was that America’s secret soldiers and airmen wear distinctive uniform patches like regular servicemen, and many of them give broad hints about their work. In his tireless fashion, he tracked them down. Later he was amused to discover that I Could Tell You But Then You Would Have to be Destroyed by Me: Emblems from the Pentagon’s Black World, the book in which he collected the images, had become a bestseller among the special forces themselves. "Apparently all of them have that book in their office now," he laughs.

In contrast to the dreary world of the secret bases and prisons, here the secret forces let rip. The images on the patches include a wizard shooting lightning bolts from his staff, dragons dropping bombs, and skunks firing laser beams. One of the more sinister has the Latin tag Oderint Dum Metuant: "Let them hate as long as they fear".

[…]

Full Story:  Secret state: Trevor Paglen documents the hidden world of governmental surveillance, from drone bases to "black sites" – Americas – World – The Independent

Written by bothernews

June 15, 2014 at 5:12 pm