[Hplusroadmap] Fwd: [neuro] [Comp-neuro] Repetitive formation of neuronal avalanches

[Bryan Bishop]

----------  Forwarded Message  ----------

Subject: [neuro] [Comp-neuro] Nested theta- and beta/gamma-oscillations 
and neuronal avalanches
Date: Sunday 01 June 2008
From: Eugen Leitl <eugen at leitl.org>
To: neuro at postbiota.org, info at postbiota.org

----- Forwarded message from Elakkat Dharmaraj Gireesh 
<elakkat at mail.nih.gov> -----

From: Elakkat Dharmaraj Gireesh <elakkat at mail.nih.gov>
Date: Tue, 27 May 2008 10:42:54 -0400
To: comp-neuro at neuroinf.org
Subject: [Comp-neuro] Nested theta- and beta/gamma-oscillations and 
neuronal
	avalanches
X-Mailer: Microsoft Office Outlook 11


   Hi

   Let me introduce you our recent paper on the nested theta- and
   beta/gamma-oscillations and neuronal avalanches. Please take a look 
if
   you are interested.

   [1]http://www.pnas.org/cgi/reprint/0800537105v1

   1: Proc Natl Acad Sci U S A. 2008 May 22.

Neuronal avalanches organize as nested theta- and 
beta/gamma-oscillations
during development of cortical layer 2/3.

   [2]Gireesh ED, [3]Plenz D.

   Laboratory of Systems Neuroscience, National Institute of Mental
   Health, 9000 Rockville Pike, Bethesda, MD 20892.

   Maturation of the cerebral cortex involves the spontaneous emergence
   of distinct patterns of neuronal synchronization, which regulate
   neuronal differentiation, synapse formation, and serve as a substrate
   for information processing. The intrinsic activity patterns that
   characterize the maturation of cortical layer 2/3 are poorly
   understood. By using microelectrode array recordings in vivo and in
   vitro, we show that this development is marked by the emergence of
   nested - and beta/gamma-oscillations that require NMDA- and
   GABA(A)-mediated synaptic transmission. The oscillations organized as
   neuronal avalanches, i.e., they were synchronized across cortical
   sites forming diverse and millisecond-precise spatiotemporal patterns
   that distributed in sizes according to a power law with a slope of
   -1.5. The correspondence between nested oscillations and neuronal
   avalanches required activation of the dopamine D(1) receptor. We
   suggest that the repetitive formation of neuronal avalanches provides
   an intrinsic template for the selective linking of external inputs to
   developing superficial layers.

   Best regards



   Elakkat D. Gireesh

   Section on Critical Brain Dynamics

   NIMH, NIH

   Ph: 301-451-2868; 301-661-4532

References

   1. http://www.pnas.org/cgi/reprint/0800537105v1
   2. 
http://www.ncbi.nlm.nih.gov/sites/entrez?Db=pubmed&Cmd=Search&Term=%22Gireesh%20ED%22%5BAuthor%5D&itool=EntrezSystem2.PEntrez.Pubmed.Pubmed_ResultsPanel.Pubmed_DiscoveryPanel.Pubmed_RVAbstractPlus
   3. 
http://www.ncbi.nlm.nih.gov/sites/entrez?Db=pubmed&Cmd=Search&Term=%22Plenz%20D%22%5BAuthor%5D&itool=EntrezSystem2.PEntrez.Pubmed.Pubmed_ResultsPanel.Pubmed_DiscoveryPanel.Pubmed_RVAbstractPlus

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Eugen* Leitl <a href="http://leitl.org">leitl</a> http://leitl.org
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