Artificial eyes would be huge in the medical field for repairing lost sight, considering you can't replace old eyes with surgically transplanted new ones (correct me if I'm wrong). |
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http://news.bbc.co.uk/2/hi/health/7919645.stm |
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Artificial eyes would be huge in the medical field for repairing lost sight, considering you can't replace old eyes with surgically transplanted new ones (correct me if I'm wrong). |
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Man, that is a GREAT thought. That's what I mean when I say "It's interesting to see what is slowly becoming of us". The more technology advances, the more I think that soon enough, we'll have some new "functions" available to us. |
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I wonder how this works on a neural level. |
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The critical period for developing visual acuity seems to end at age 7 or 8. |
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Interesting... so the the brain undergoes a period of superplasticity in childhood? |
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How do you know you are not dreaming right now?
Right. This critical period of plasticity reaches far beyond visual development, as well. For example, you've probably heard that languages are most easily learned during early childhood. The critical periods vary depending on what we're talking about - as another example, the critical period for developing the incest-avoidance response appears to be within the first 2 years - but in terms of overall plasticity, the brain is pretty stable (compared to the early years) by adolescence. See this Wiki article for a little further reading. |
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Extremely interesting. Do you know some theories about the evolutionary advantages? I wonder if it is theoretically possible to chemically induce superplasticity in an adult. I wonder further if that is a good or terrible idea. |
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I'm not aware of any existing theories, no. I could speculate on a few myself, but I think that this might be a good time to make a more general point regarding evolution (as long as High Hunter doesn't mind a mild thread-jack ). |
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WHAT IS THIS?! A thread jack?? |
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Last edited by High Hunter; 03-10-2009 at 06:02 PM.
Referring to the "plasticity" of the infant brain is a little misleading, though. Much of the mechanism of this plasticity, if I recall correctly, is an overabundance of neurons. As we learn the basics (vision, speech, motor control, etc), those neurons which are used thrive while others die off, leaving behind the patterns and structures that let us operate in the world. Preserving that plasticity would mean never learning: persistent infancy. |
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If you have a sense of caring for others, you will manifest a kind of inner strength in spite of your own difficulties and problems. With this strength, your own problems will seem less significant and bothersome to you. By going beyond your own problems and taking care of others, you gain inner strength, self-confidence, courage, and a greater sense of calm.Dalai Lama
Here's some more info, |
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