www.nytimes.com/2005/04/25...5brain.html
By peering not into the eyes but into the brain, an improved scanning technique has enabled scientists to figure out what people are looking at - even, in some cases, when they are not aware of what they have seen.
The advance, reported today, shows that the scanners may be better able than previously supposed to probe the border between conscious and unconscious thought and even, in certain circumstances, to read people's state of mind.
The scanning technique, known as functional magnetic resonance imaging, is a more powerful version of a technique widely used in hospitals. It can show which regions of the brain are actively performing some task, but until now has lacked the resolution to track specific groups of neurons, as the functional units of the brain are called.
By peering not into the eyes but into the brain, an improved scanning technique has enabled scientists to figure out what people are looking at - even, in some cases, when they are not aware of what they have seen.
The advance, reported today, shows that the scanners may be better able than previously supposed to probe the border between conscious and unconscious thought and even, in certain circumstances, to read people's state of mind.
The scanning technique, known as functional magnetic resonance imaging, is a more powerful version of a technique widely used in hospitals. It can show which regions of the brain are actively performing some task, but until now has lacked the resolution to track specific groups of neurons, as the functional units of the brain are called.
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