When the government approved the implant for $100 million, it didn’t include the price tag.
The $100 billion was for a variety of purposes, including for the Pentagon, which had long been struggling with a shortage of troops.
The government has been seeking a way to help soldiers overcome the mental and physical effects of combat, which can include flashbacks, anxiety, insomnia and hallucinations.
The Department of Defense has long wanted to give soldiers better access to technology that helps them to better manage their stress.
That includes neurostimulation devices that are designed to stimulate nerve cells in the brain to help people with depression and anxiety.
The U.S. Army has been experimenting with brain stimulation since the late 1980s.
A group of scientists led by Dr. Robert J. Schatz, a neurologist at Columbia University Medical Center in New York City, is leading a clinical trial of the devices, which are currently being evaluated in Germany.
The researchers hope to begin a clinical study by next year.
Some experts said the device’s potential uses are limited by the limitations of current technology.
“There are very few human studies with the technology to test it on,” said Dr. Andrew S. Freedman, a professor of psychiatry at the University of California, Los Angeles.
For example, neurostimulator devices typically don’t work on the central nervous system, which means they cannot deliver a strong enough signal to stimulate brain cells.
“That’s really the major limitation,” Dr. Freedmans said.
But some scientists believe the new technology could have a much wider impact.
“The brain stimulation technology is very promising and the potential for this to be used as a treatment is really huge,” said Andrew Sussman, an assistant professor of neurology at the Yale University School of Medicine and a researcher at the VA Boston Healthcare System in Boston.
Neurostimulation can be used to treat depression and other mental illnesses, and some experts have suggested that it could even be used for combat veterans.
But the Pentagon and the National Institutes of Health, which is backing the study, have been slow to approve the devices.
The Defense Department, which has long supported the use of brain stimulation in its troops, did not respond to questions about why it is spending $40 million on the device.
Dr. Schitz said the $100-million price tag for the implant is a small fraction of the $700 billion the Pentagon is spending to support research in the area.
“I think we should not be overly worried,” Dr in the NIH said in a statement.
The Pentagon has been using technology for more than 30 years to treat traumatic brain injuries, and a study of a neurostimulated hand found that it worked better than a standard therapy.
But research into the use and efficacy of neurostimulating devices in military combat troops has been slow, with no studies done on the technology’s effects in civilians.
For decades, the military has been trying to develop a technology that could be used by troops in the field, but no one has come close to being able to use the technology for long-term use in people.
The device’s creators say they hope to start a clinical trials next year and begin taking orders from customers.