Controlling individual cortical nerve cells by human thought

Five years ago, neuroscientists and neurosurgeons discovered that a single neuron can function much like a sophisticated computer and recognize people, landmarks, and objects. Now the same researchers have found that individuals can exert conscious control over these single neurons -- despite the neurons' location in an area of the brain previously thought inaccessible to conscious control -- and manipulate the behavior of an image on a computer screen.

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