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User: kennorman

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  1. Re:it's not a black box to me... on Brain Prosthesis Ready For Testing · · Score: 2, Informative

    oops, here is the correct URL: http://www.princeton.edu/~psych/PsychSite/compmemo ry/publications.html (i'm not sure why the URL shows a space between "compmemo" and "ry" but in any case that space shouldn't be there) then click on the first article under "review papers"

  2. it's not a black box to me... on Brain Prosthesis Ready For Testing · · Score: 5, Informative

    I do research on hippocampal functioning --- more specifically, I build neural network models of how the hippocampus supports memory for specific events. I was surprised by the statement in the new scientist article that "we know nothing about how the hippocampus encodes memories". There is actually quite a lot of consensus among researchers as to how the different subregions of the hippocampus support its overall function of storing and retrieving memories. If you want more information, a good place to start might be this paper that I wrote with my colleague Randy O'Reilly. Go to:

    http://www.princeton.edu/~psych/PsychSite/compme mo ry/

    then click on the first article under "Review Papers". You can follow the references to find other, relevant papers. Also, I should say that I am extremely skeptical that the prosthesis described in the New Scientist article will be able to substitue for an actual hippocampus. One of the key properties of the hippocampus (and the brain more generally) is that it *changes* as a function of experience --- every time you store a new memory in the hippocampus, it changes the strengths of synapses, which in turn changes the input-output function. So I can't see how it would be possible to replace the hippocampus using a simple, static lookup table. I may be missing something, but I think we are still a very long way from building an artificial hippocampus, and I think that we won't be successful in this endeavor unless we build in some knowledge about how the structure actually works...