Word: vision
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Dates: during 1990-1999
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...utopian scene closes at this point of my autobiography. For in order to arrive in Washington, I need to be thinking like an upperclassman, and as we have already established, I am a first-year who is still discovering the Harvard campus. I need to focus. I need a vision of what my time here is going to be like, what I am living for. At this point, I have neither...
...while the brain contains virtually all the nerve cells it will ever have, the pattern of wiring between them has yet to stabilize. Up to this point, says Shatz, "what the brain has done is lay out circuits that are its best guess about what's required for vision, for language, for whatever." And now it is up to neural activity--no longer spontaneous, but driven by a flood of sensory experiences--to take this rough blueprint and progressively refine...
...series of experiments viewed as classics by scientists in the field, Berkeley's Shatz chemically blocked neural activity in embryonic cats. The result? The axons that connect neurons in the retina of the eye to the brain never formed the left eye-right eye geometry needed to support vision...
...Around the age of two months, for example, the motor-control centers of the brain develop to the point that infants can suddenly reach out and grab a nearby object. Around the age of four months, the cortex begins to refine the connections needed for depth perception and binocular vision. And around the age of 12 months, the speech centers of the brain are poised to produce what is perhaps the most magical moment of childhood: the first word that marks the flowering of language...
King's family and associates, of course, don't see the humor in Connerly's misappropriation of King's vision. In fact, his namesake, Martin Luther King III, is starting his own organization to fight Connerly every step of the way. This is part of the King family's long-running struggle to gain financial control over his writings and speeches (which includes a recent multimillion-dollar pact with Time Warner, this magazine's owner). But the real issue here is not money but whether people who oppose nearly everything King stood for have the right to assert that...