?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=Role+of+membrane+potential+fluctuations+to%0Athe+criticality+of+neuronal+avalanche+activity&rft.creator=Juanico%2C+Dr+Dranreb+Earl&rft.subject=Biophysics&rft.subject=Neural+Modelling&rft.description=Experimental+evidence+for+self-organised+criticality+(SOC)+in%0Anon-conservative+systems+has+recently+been+found+in+studies+of+rat%0Acortical+slices.+The+size+distribution+of+observed+neuronal%0Aavalanches+has+been+attested+to+obey+%243%2F2%24+power-law+scaling.+A%0Amean-field+sandpile+model+of+a+noisy+neuronal+system+is+proposed+to%0Arefute+the+irreconcilability+between+non-conservation+and%0Acriticality+put+forward+by+longstanding+SOC+hypotheses.+The+model%0Apredicts+that+neuronal+networks+achieve+and+maintain+criticality%0Adespite+non-conservation+due+to+the+presence+of+background+activity%0Aoriginating+from+membrane+potential+fluctuations+within+individual%0Aneurons.+Furthermore%2C+small+networks+are+demonstrated+to+tip+towards%0Aepileptiform+activity+when+background+activity+is+strong.+This%0Afinding+ties+in+redundancy%2C+an+intriguing+feature+of+brain+networks%2C%0Ato+robustness+of+SOC+behaviour.&rft.date=2007-02&rft.type=Preprint&rft.type=NonPeerReviewed&rft.format=application%2Fpdf&rft.identifier=http%3A%2F%2Fcogprints.org%2F5501%2F1%2Fjuan0208.pdf&rft.identifier=++Juanico%2C+Dr+Dranreb+Earl++(2007)+Role+of+membrane+potential+fluctuations+to+the+criticality+of+neuronal+avalanche+activity.++%5BPreprint%5D+++++&rft.relation=http%3A%2F%2Fcogprints.org%2F5501%2F