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To: lurqer who wrote (42588)4/13/2004 10:18:26 PM
From: lurqer  Read Replies (1) | Respond to of 89467
 
Disaster in the making?

U.S. Deploys for Showdown With Cleric

DENIS D. GRAY

NAJAF, Iraq - A 2,500-strong U.S. force, backed by tanks and artillery, pushed to the outskirts of the Shiite holy city of Najaf on Tuesday for a showdown with a radical cleric who said he was prepared to die in his battle against the U.S.-led occupation.

An American helicopter went down near Fallujah, and an insurgent said he hit it with a rocket-propelled grenade. There were no reported injuries to the crew, although a team securing the site later suffered unspecified casualties, a Marine commander said.

At least 78 U.S. troops were killed and 561 were wounded in Iraq (news - web sites) in the first 12 days of April, said Lt. Gen. Richard Cody, the deputy chief of staff for operations at the Pentagon (news - web sites).

April is becoming the deadliest month since the Iraq war began in March 2003. Since then, at least 674 U.S. troops have died, according to the Pentagon.

Gen. John Abizaid, the top commander of U.S. forces in the Middle East, said Monday he has asked Defense Secretary Donald H. Rumsfeld to adjust the U.S. troop rotation into and out of Iraq this spring so that U.S. commanders can have the use of perhaps 10,000 more soldiers than they otherwise would have.

On the way to Najaf, the U.S. force's 80-vehicle convoy was ambushed Monday night by gunmen firing small arms and setting of roadside bombs north of the city. One soldier was killed and an American civilian contractor was wounded, officers in the convoy said.

The top U.S. commander in Iraq, Lt. Gen. Ricardo Sanchez, said their mission was to "capture or kill" radical Shiite cleric Muqtada al-Sadr.

In an interview Tuesday with Al Manar, the Hezbollah television station in Lebanon, al-Sadr said he was not in direct negotiations with U.S. forces, and that he continued to demand the Americans withdraw from Najaf.

"I am only afraid of God," he said. "I am ready to sacrifice myself for the Iraqi people."

Units set up a cordon on approaches to the city, barring his al-Mahdi Army militiamen from leaving.

Iraqi leaders launched hurried negotiations aimed at averting a U.S. assault on the city, site of the holiest Shiite site, the Imam Ali Shrine.

The sons of Iraq's three grand ayatollahs — including the most powerful one, Ali al-Husseini al-Sistani — met al-Sadr Monday night in his Najaf office and assured him of their opposition to any U.S. strike.

"They agreed not to allow any hostile act against Sayyed Moqtada al-Sadr and the city of Najaf," said a person at the meeting, speaking on condition of anonymity.

The delegation also was reportedly trying to work out a compromise to prevent a U.S. attack.

Col. Dana J.H. Pittard, the commander of the force, said his troops were aware that a "single shot in Najaf" by U.S. soldiers could outrage Iraq's powerful Shiite majority.

"Look at this as the Shiite Vatican (news - web sites)," Pittard said before the deployment.

The grand ayatollahs — older, moderate leaders with immense influence among Shiites — have long kept the young, fiercely anti-American al-Sadr at arm's length. The meeting reflected an eagerness to avoid bloodshed and al-Sadr's increasing influence.



In a concession to American demands, al-Sadr ordered his militiamen out of police stations and government buildings in Najaf and the nearby cities of Karbala and Kufa. Police were back in their stations and on patrols, while al-Sadr black-garbed gunmen largely stayed out of sight.

But the militia rebuffed a U.S. demand to disband.

Earlier Tuesday, al-Sadr militiamen based in the main mosque in the nearby city of Kufa opened fire on a passing patrol of Spanish forces, prompting a short gunbattle.

Overnight, a mortar was fired at the Spanish base between Kufa and Najaf, and Spanish forces repelled an attack on a nearby water distillation plant.

Near Fallujah, a masked insurgent said he hit the U.S. helicopter with a rocket-propelled grenade, although Marine Lt. Col. Brennan Byrne said it was not known what caused the Sikorsky H-53 to go down.

Troops removed those on board, and "there is no indication the crew was injured," Byrne said. He was not certain how many were aboard.

The team that secured the craft was ambushed by gunmen using small weapons, RPGs and mortars, and it suffered casualties, Byrne said, but he would not give details.

Witnesses told The Associated Press that four U.S. soldiers were shot by insurgents at the site about 12 miles east of Fallujah in the village of Zawbaa.

Another team later blew up the aircraft to prevent it from being looted, he said.

While a cease-fire has kept Fallujah relatively calm for four days, the area between the besieged city and Baghdad has seen heavy clashes by insurgents and U.S. forces. An Apache helicopter was shot down Sunday in nearby Abu Ghraib, killing its two crewmembers.

Before Tuesday's helicopter crash, a U.S. convoy was attacked near the same site, and two Humvees and a truck were burning, said witnesses, who also reported U.S. casualties.

The U.S. military said about 70 Americans and 700 insurgents had been killed this month, the bloodiest since the fall of Baghdad a year ago with U.S.-led forces fighting on three fronts: against Sunni insurgents in Fallujah, Shiite militiamen in the south and gunmen in Baghdad and on its outskirts.

More than 600 Iraqis have been killed in Fallujah since the siege began on April 5, said the head of the city hospital, Rafie al-Issawi. Most of the dead registered at hospitals and clinics were women, children and elderly, he said.

In all, about 880 Iraqis have been killed in the violence, according to an AP count based on statements by Iraqi hospital officials, U.S. military statements and Iraqi police.

Another toll from the week's violence: more than 40 foreigners reportedly were taken hostage by insurgents, although a dozen had been released Sunday and Monday. Those still believed held included three Japanese and truck driver Thomas Hamill of Macon, Miss., whose captors had threatened to kill them.

Four Italians working as private guards for DTS Security, a U.S. company, were reported missing in Iraq, the ANSA news agency quoted the Foreign Ministry as saying Tuesday. An Arab satellite TV network said the four were kidnapped by insurgents near Fallujah and showed video of them in a room surrounded by gunmen wearing Arab headscarves.

Eight Ukrainian and Russian employees of a Russian energy company who were kidnaped in Baghdad were freed Tuesday, the Russian Foreign Ministry said. Seven Chinese were freed Monday after being held for a day, China's official news agency said. Two reportedly were injured.

Two U.S. soldiers and seven employees of a U.S. contractor, including Hamill, were missing after an attack Friday on a convoy west of Baghdad, Sanchez said.

The recent burst of violence has exposed weaknesses in Iraq's U.S.-trained security forces. A battalion of the Iraqi army refused to fight in Fallujah, Sanchez said. And some police defected to al-Sadr's forces, Abizaid said.

In an effort to toughen the Iraqi forces, Abizaid said the U.S. military will reach out to former senior members of Saddam Hussein (news - web sites)'s disbanded army — a reversal in strategy. The military has tried to avoid relying on top officials from the ousted regime.

"It's ... very clear that we've got to get more senior Iraqis involved — former military types involved in the security forces," he said. "In the next couple of days, you'll see a large number of senior officers being appointed to key positions in the ministry of defense and the Iraqi joint staff and in Iraqi field commands."

news.yahoo.com

lurqer



To: lurqer who wrote (42588)4/13/2004 11:13:58 PM
From: T L Comiskey  Read Replies (2) | Respond to of 89467
 
FDA Approves Human Brain Implant Devices

Tue Apr 13, 6:34 PM ET Add Business - AP to My Yahoo!


By JUSTIN POPE, AP Business Writer

BOSTON - For years, futurists have dreamed of machines that can read minds, then act on instructions as they are thought. Now, human trials are set to begin on a brain-computer interface involving implants.










Cyberkinetics Inc. of Foxboro, Mass., has received Food and Drug Administration (news - web sites) approval to begin a clinical trial in which four-square-millimeter chips will be placed beneath the skulls of paralyzed patients.

If successful, the chips could allow patients to command a computer to act — merely by thinking about the instructions they wish to send.

It's a small, early step in a mission to improve the quality of life for victims of strokes and debilitating diseases like cerebral palsy or Lou Gehrig's. Many victims of such ailments can now survive for long periods thanks to life support, but their quality of life is poor.

"A computer is a gateway to everything else these patients would like to do, including motivating your own muscles through electrical stimulation," said Cyberkinetics chief executive Tim Surgenor. "This is a step in the process."

The company is far from the only research group active in the field. An Atlanta company, Neural Signals, has conducted six similar implants as part of a clinical trial and hopes to conduct more. But for now, its device contains relatively simple electrodes, and experts say Cyberkinetics will be the first to engage in a long-term, human trial with a more sophisticated device placed inside a patient's brain. It hopes to bring a product to market in three to five years.

A number of research groups have focused on brain-computer links in recent years.

In 1998, Neural Signals researchers said a brain implant let a paralyzed stroke victim move a cursor to point out phrases like "See you later. Nice talking with you" on a computer screen. The next year, other scientists said electrodes on the scalp of two Lou Gehrig's disease (news - web sites) patients let them spell messages on a computer screen.

Cyberkinetics founder Dr. John Donoghue, a Brown University neuroscientist, attracted attention with research on monkeys that was published in 2002 in the journal Nature.

Three rhesus monkeys were given implants, which were first used to record signals from their motor cortex — an area of the brain that controls movement — as they manipulated a joystick with their hands. Those signals were then used to develop a program that enabled one of the monkeys to continue moving a computer cursor with its brain.

The idea is not to stimulate the mind but rather to map neural activity so as to discern when the brain is signaling a desire to make a particular physical movement.

"We're going to say to a paralyzed patient, 'imagine moving your hand six inches to the right,'" Surgenor said.

Then, he said, researchers will try to identify the brain activity associated with that desire. Someday, that capacity could feed into related devices, such as a robotic arm, that help patients act on that desire.

It's misleading to say such technologies "read minds," said Dr. Jonathan Wolpaw, of the New York State Department of Health, who is conducting similar research. Instead, they train minds to recognize a new pattern of cause and effect, and adapt.

"What happens is you provide the brain with the opportunity to develop a new skill," he said.

Moving the experiment from monkeys to humans is a challenge. Cyberkinetics' "Brain Gate" contains tiny spikes that will extend down about one millimeter into the brain after being implanted beneath the skull, monitoring the activity from a small group of neurons.

The signals will be monitored through wires emerging from the skull, which presents some danger of infection. The company is working on a wireless version.



But Richard Andersen, a Cal Tech expert conducting similar research, said the field is advanced enough to warrant this next step.

"I think there is a consensus among many researchers that the time is right to begin trials in humans," Andersen said, noting that surgeons are already implanting devices into human brains — sometimes deeply — to treat deafness and Parkinson's disease (news - web sites). "There is always some risk but one considers the benefits."

Wolpaw said it isn't clear that it's necessary to implant such devices inside the brain; other technologies that monitor activity from outside the skull may prove as effective. But, he said, the idea of brain implants seems to attract more attention.

"The idea that you can get control by putting things into the brain appears to have an inherent fascination," he said.

Andersen, however, said that for now devices inside the brain provide the best information.

"It would be nice if in the future some technology comes along that would let you non-invasively record from the brain," he said. "MRIs do that. But unfortunately, it's very expensive and cumbersome, and the signal is very indirect and slow."