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How do sensory neurons share information in the brain?

  1. Aug 31, 2003 #1
    I am trying to find out some information about the nerves that deliver sensory inputs into the brain. I understand that neurons in the brain itself share thousands of connections to other neurons. The neurons that deliver sensory information into the brain at some point meet the ones in the brain itself to transfer information.
    What I'm wondering is if these border neurons also have hundreds/thousands of connections to other neurons, meaning that a single sensory transmitter cell is passing the same information to multiple brain neurons, or just 1, which then uses its own connections to transfer information to the rest of the brain. Thanks!
  2. jcsd
  3. Aug 31, 2003 #2
    Generally what happens is that
    incoming information goes to
    the main center in the brain where
    that kind of information is
    processed: visual, for example,
    goes to the occipetal lobes,
    hearing goes to a temporo-parietal
    area, touch to the sensory strip
    of the parietal lobes, and so

    Once the info gets there and is
    processed then, it would be sent
    out to other areas of the brain
    that further process it, parti-
    cularly the limbic system where
    the info is checked against
    memory (what's new and what'sold
    in this info?) and for danger (is
    this a threat to survival of any

    All parts of the brain are con-
    nected to all other parts, and
    the information can be exchanged
    back and forth indefinitely.

    So I think the answer to your
    question is that the incoming
    nerves themselves are not connec-
    ted to the whole brain but to
    some some specific "module" which
    is directly connected to several
    others, which are directly con-
    nected to several others, and so
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