?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=Self-organising+mechanism+of+neuronal+avalanche+criticality&rft.creator=Juanico%2C+Dr+D.E.&rft.subject=Biophysics&rft.subject=Neural+Modelling&rft.description=A+self-organising+model+is+proposed+to+explain+the+criticality%0Ain+cortical+networks+deduced+from+recent+observations+of+neuronal%0Aavalanches.+Prevailing+understanding+of+self-organised+criticality+(SOC)%0Adictates+that+conservation+of+energy+is+essential+to+its+emergence.%0ANeuronal+networks+however+are+inherently+non-conservative+as+demonstrated%0Aby+microelectrode+recordings.+The+model+presented+here+shows+that+SOC+can%0Aarise+in+non-conservative+systems+as+well%2C+if+driven+internally.+Evidence%0Asuggests+that+synaptic+background+activity+provides+the+internal+drive+for+non-conservative%0Acortical+networks+to+achieve+and+maintain+a+critical+state.+SOC+is+robust+to%0Aany+degree+%24%5Ceta+%5Cin+(0%2C1%5D%24+of+background+activity+when+the+network+size+%24N%24+%0Ais+large+enough+such+that+%24%5Ceta+N%5Csim+10%5E3%24.+For+small+networks%2C+a+strong+background+%0Aleads+to+epileptiform+activity%2C+consistent+with+neurophysiological+knowledge%0Aabout+epilepsy.&rft.date=2007-01&rft.type=Preprint&rft.type=NonPeerReviewed&rft.format=application%2Fpdf&rft.identifier=http%3A%2F%2Fcogprints.org%2F5398%2F1%2Fcogprints-juanico-2007.pdf&rft.identifier=++Juanico%2C+Dr+D.E.++(2007)+Self-organising+mechanism+of+neuronal+avalanche+criticality.++%5BPreprint%5D+++++&rft.relation=http%3A%2F%2Fcogprints.org%2F5398%2F