?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=The+nervous+principle%3A+active+versus+passive+electric+processes+in+neurons&rft.creator=Georgiev%2C+Danko&rft.subject=Biophysics&rft.subject=Neural+Modelling&rft.subject=Neurophysiology&rft.description=This+essay+presents+in+the+first+section+a+comprehensive+introduction+to+classical+electrodynamics.+The+reader+is+acquainted+with+some+basic+concepts+like+right-handed+coordinate+system%2C+vector+calculus%2C+particle+and+field+fluxes%2C+and+learns+how+to+calculate+electric+and+magnetic+field+strengths+in+different+neuronal+compartments.+Then+the+exposition+comes+to+explain+the+basic+difference+between+a+passive+and+an+active+neural+electric+process%3B+a+brief+historical+perspective+on+the+nervous+principle+is+also+provided.+A+thorough+description+is+supplied+of+the+nonlinear+mechanism+generating+action+potentials+in+different+compartments%2C+with+focus+on+dendritic+electroneurobiology.+Concurrently%2C+the+electric+field+intensity+and+magnetic+flux+density+are+estimated+for+each+neuronal+compartment.+Observations+are+then+discussed%2C+succinctly+as+the+calculated+results+and+experimental+data+square.+Local+neuronal+magnetic+flux+density+is+less+than+1%2F300+of+the+Earth%E2%80%99s+magnetic+field%2C+explaining+why+any+neuronal+magnetic+signal+would+be+suffocated+by+the+surrounding+noise.+In+contrast+the+electric+field+carries+biologically+important+information+and+thus%2C+as+it+is+well+known%2C+acts+upon+voltage-gated+transmembrane+ion+channels+that+generate+neuronal+action+potentials.+Though+the+transmembrane+difference+in+electric+field+intensity+climbs+to+ten+million+volts+per+meter%2C+the+intensity+of+the+electric+field+is+estimated+to+be+only+ten+volts+per+meter+inside+the+neuronal+cytoplasm.&rft.contributor=Szirko%2C+Prof.+Mariela&rft.date=2004-08&rft.type=Journal+(Paginated)&rft.type=PeerReviewed&rft.format=application%2Fpdf&rft.identifier=http%3A%2F%2Fcogprints.org%2F3938%2F1%2FElectroneurobiologia.pdf&rft.identifier=++Georgiev%2C+Danko++(2004)+The+nervous+principle%3A+active+versus+passive+electric+processes+in+neurons.++%5BJournal+(Paginated)%5D+++++&rft.relation=http%3A%2F%2Fcogprints.org%2F3938%2F