?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=Distribution+in+time+and+space+of+prepyriform+electrical+activity&rft.creator=Freeman%2C+W.+J.&rft.subject=Neural+Modelling&rft.description=IN+A+PREVIOUS+STUDY+(9)+evidence+was+found+that+a+large+proportion+of+the+spontaneous+electrical+activity+recorded+from+the+basal+forebrain+of+the+anesthetized+cat+was+generated+bilaterally+by+the+prepyriform+cortex%2C+not+by+the+subcortical+structures+in+which+the+recording+electrodes+were+located.+This+finding+raised+the+question+of+how+the+oscillating+potentials+of+the+brain+are+transmitted%2C+i.e.%2C+to+what+extent+the+spread+of+EEG+activity+is+due+(i)+to+continuous+spread+of+membrane+depolarization+along+axonal+or+dendritic+fibers%3B+(ii)+to+the+formation+of+intracellular%3Fextracellular+current+loops+such+as+occur+on+a+shorter+time+scale+in+peripheral+nerve%2C+with+instantaneous+field+distribution+of+the+current+through+the+brain%3B+and+(iii)+to+successive+activation+of+contiguous+cells.+To+approach+this+question+a+study+was+made+of+the+nature+of+the+various+wave+forms+generated+by+the+prepyriform+cortex+and+of+their+rates%2C+directions%2C+and+distances+of+spread+in+and+around+the+cortex.&rft.date=1958&rft.type=Journal+(Paginated)&rft.type=PeerReviewed&rft.format=text%2Fhtml&rft.identifier=http%3A%2F%2Fcogprints.org%2F44%2F1%2Fdistribution_20.html&rft.identifier=++Freeman%2C+W.+J.++(1958)+Distribution+in+time+and+space+of+prepyriform+electrical+activity.++%5BJournal+(Paginated)%5D+++++&rft.relation=http%3A%2F%2Fcogprints.org%2F44%2F