Word: sejnowski
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...have to be unconscious for all the pruning and strengthening to occur. Maybe it's just easier to be asleep than awake while the work is going on. "When you fall asleep, it's like you're leaving your house and the workmen come in to renovate," suggests Terry Sejnowski, a computational neurobiologist at the Salk Institute in La Jolla, Calif. "You don't want to live in the house while the construction's going on because it's a mess...
...publishing A New Kind of Science (Wolfram Media), a 1,200-page tome, some two decades in the making, that claims to redefine the foundations of virtually every branch of science, from physics and mathematics to biology and even psychology. "Stephen is not a modest man," says Terrence Sejnowski, director of the Computational Neurobiology Laboratory at the Salk Institute for Biological Studies in La Jolla, Calif., who is an avid Wolfram watcher. "But his ideas could turn out to be extremely important...
...final verdict on whether Wolfram's New Kind of Science is truly revolutionary--or whether cellular automata merely resemble rather than describe the world--will have to wait until scientists can digest it fully. And that could take a while. "Each idea in the book," says Sejnowski, "will take at least 10 years to explore and test." Provocative as Wolfram's theories are, he says, it's whether they agree with nature that will be the ultimate test...
...computer's recognition skills by teaching it to identify all 46 muscle actions in the Ekman catalogue. They will then program the computer to recognize the various combinations of these movements, pouring live video images of human volunteers directly into the machine's brain. Eventually, the research at Sejnowski's and other labs could lead to a working lie detector, one that would be far more reliable and much less intrusive than existing polygraphs, which measure such reactions as heartbeat and sweating that clever subjects can control. Says Bartlett: "It would spot in an instant any facial movement that indicated...
Where the technology could go from there is difficult to say, but Sejnowski anticipates big things. Ekman often used videotapes to gauge the emotional states of subjects, once detecting a brief flicker of sadness in the face of a patient who later turned out to be suicidal. A computer like Sejnowski's could have made the diagnosis in real time. Further down the road could be a host of other emotion-measuring computer systems, ranging from smart ATMs that can shut down if they spot a suspicious patron to television systems that can determine if a finger-wagging politician...