About Entrez
Text Version
Entrez PubMed
Overview
Help |
FAQ
Tutorial
New/Noteworthy
E-Utilities
PubMed Services
Journals Database
MeSH Database
Single Citation Matcher
Batch Citation Matcher
Clinical Queries
LinkOut
Cubby
Related Resources
Order Documents
NLM Catalog
NLM Gateway
TOXNET
Consumer Health
Clinical Alerts
ClinicalTrials.gov
PubMed Central
|
|
On embedding synfire chains in a balanced network.
Aviel Y, Mehring C, Abeles M, Horn D.
Interdisciplinary Center for Neural Computation, Hebrew University, Jerusalem, Israel. aviel@cc.huji.ac.il
We
investigate the formation of synfire waves in a balanced network of
integrate-and-fire neurons. The synaptic connectivity of this network
embodies synfire chains within a sparse random connectivity. This
network can exhibit global oscillations but can also operate in an
asynchronous activity mode. We analyze the correlations of two neurons
in a pool as convenient indicators for the state of the network. We
find, using different models, that these indicators depend on a scaling
variable. Beyond a critical point, strong correlations and large
network oscillations are obtained. We looked for the conditions under
which a synfire wave could be propagated on top of an otherwise
asynchronous state of the network. This condition was found to be
highly restrictive, requiring a large number of neurons for its
implementation in our network. The results are based on analytic
derivations and simulations.
PMID: 12816575 [PubMed - indexed for MEDLINE]
|