[Neuroscience] Re: Brain Works More Chaotically Than Previously Thought

r norman via neur-sci%40net.bio.net (by r_s_norman from _comcast.net)
Sat Apr 19 11:23:19 EST 2008


On Sat, 19 Apr 2008 05:17:41 -0700 (PDT), "J.A.Legris"
<jalegris from sympatico.ca> wrote:

>On Apr 19, 2:59 am, "John Hasenkam" <jo... from goawayplease.com> wrote:
>> Brain Works More Chaotically Than Previously Thought
>>
>> http://www.sciencedaily.com/releases/2007/02/070227105247.htm
>>
>> The brain appears to process information more chaotically than has long been
>> assumed. This is demonstrated by a new study conducted by scientists at the
>> University of Bonn. The passing on of information from neuron to neuron does
>> not, they show, occur exclusively at the synapses, i.e. the junctions
>> between the nerve cell extensions. Rather, it seems that the neurons release
>> their chemical messengers along the entire length of these extensions and,
>> in this way, excite the neighbouring cells.
>> ...
>
>
>Káradóttir, R., Hamilton, N.B., Bakiri, Y & Attwell, D. Spiking and
>nonspiking classes of oligodendrocyte precursor glia in CNS white
>matter. Nature Neuroscience 11, 450 - 456 (2008).
>
>Kukley, M., Capetillo-Zarate, E. & Dietrich, D. Vesicular release of
>glutamate from axons in white matter. Nat. Neurosci. 10, 311–320
>(2007).
>
>Ziskin, J.L., Nishiyama, A., Rubio, M., Fukaya, M. & Bergles, D.E.
>Vesicular release of glutamate from unmyelinated axons in white
>matter. Nat. Neurosci. 10, 321–330 (2007).

The paper referred to in the news release does not  seem to be
available at Nature Neuroscience yet.   It is not clear what this
means for myelinated neurons where information could not readily be
transmitted in this fashion.  Perhaps it is related to maintaining the
myelination.

In any event, many thanks for providing actual journal citations.  I
hate reading only news releases.



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