He asked Congress to spend $100 million next year to start a project that will explore details of the brain, which contains 100 billion cells and trillions of connections.
That's a relatively small investment for the federal government -- less than a fifth of what NASA spends every year just to study the sun -- but it's too early to determine how Congress will react.
Obama said the so-called BRAIN Initiative could create jobs, and told scientists gathered in the White House's East Room that the research has the potential to improve the lives of billions of people worldwide.
"As humans we can identify galaxies light-years away," Obama said. "We can study particles smaller than an atom, but we still haven't unlocked the mystery of the three pounds of matter that sits between our ears."
Scientists unconnected to the project praised the idea.
BRAIN stands for Brain Research through Advancing Innovative Neurotechnologies. The idea, which Obama first proposed in his State of the Union address, would require the development of new technology that can record the electrical activity of individual cells and complex neural circuits in the brain "at the speed of thought," the White House said.
Obama wants the initial $100 million investment to support research at the National Institutes of Health, the Defense Advanced Research Projects Agency and the National Science Foundation. He also wants private companies, universities and philanthropists to partner with the federal agencies in support of the research. And he wants a study of the ethical, legal and societal implications of the research.
The goals of the work are unclear at this point. A working group at NIH, co-chaired by Cornelia "Cori" Bargmann of The Rockefeller University and William Newsome of Stanford University, would work on defining the goals and develop a multi-year plan to achieve them that included cost estimates.
The $100 million request is "a pretty good start for getting this project off the ground," Dr. Francis Collins, director of the National Institutes of Health told reporters in a conference call. While the ultimate goal applies to the human brain, some work will be done in simpler systems of the brains of animals like worms, flies and mice, he said.
Collins said new understandings about how the brain works may also provide leads for developing better computers.
Brain scientists unconnected with the project were enthusiastic.
"This is spectacular," said David Fitzpatrick, scientific director and CEO of the Max Planck Florida Institute for Neuroscience in Jupiter, Fla., which focuses on studying neural circuits and structures.
While current brain-scanning technologies can reveal the average activity of large populations of brain cells, the new project is aimed at tracking activity down to the individual cell and the tiny details of cell connections, he said. It's "an entirely different scale," he said, and one that can pay off someday in treatments for a long list of neurological and psychiatric disorders including schizophrenia, Parkinson's, depression, epilepsy and autism.
"Ultimately, you can't fix it if you don't know how it works," he said. "We need this fundamental understanding of neuronal circuits, their structure, their function and their development in order to make progress on these disorders."
"This investment in fundamental brain science is going to pay off immensely in the future," Fitzpatrick said.
Richard Frackowiak, a co-director of Europe's Human Brain Project, which is funded by the European Commission, said he was delighted by the announcement.
"From our point of view as scientists we can only applaud and say we will collaborate as much as possible," he said. "The opportunities for a massive worldwide collaborative effort to solve the problem of neurodegeneration and psychiatric disease will ... really become absolutely feasible," he said. "We need that."
Ritter reported from New York.
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