?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=Cell+division+and+migration+in+a+'genotype'+for+neural+networks&rft.creator=Cangelosi%2C+Angelo&rft.creator=Parisi%2C+Domenico&rft.creator=Nolfi%2C+Stefano&rft.subject=Evolution&rft.subject=Computational+Neuroscience&rft.subject=Artificial+Intelligence&rft.subject=Neural+Nets&rft.subject=Evolutionary+Psychology&rft.description=Much+research+has+been+dedicated+recently+to+applying+genetic+algorithms+to+populations+of%0Aneural+networks.+However%2C+while+in+real+organisms+the+inherited+genotype+maps+in+complex%0Aways+into+the+resulting+phenotype%2C+in+most+of+this+research+the+development+process+that%0Acreates+the+individual+phenotype+is+ignored.+In+this+paper+we+present+a+model+of+neural%0Adevelopment+which+includes+cell+division+and+cell+migration+in+addition+to+axonal+growth+and%0Abranching.+This+reflects%2C+in+a+very+simplified+way%2C+what+happens+in+the+ontogeny+of+real%0Aorganisms.+The+development+process+of+our+artificial+organisms+shows+successive+phases+of%0Afunctional+differentiation+and+specialization.+In+addition%2C+we+find+that+mutations+that+affect%0Adifferent+phases+of+development+have+very+different+evolutionary+consequences.+A+single%0Achange+in+the+early+stages+of+cell+division%2Fmigration+can+have+huge+effects+on+the+phenotype%0Awhile+changes+in+later+stages+have+usually+a+less+drammatic+impact.+Sometimes+changes+that%0Aaffect+the+first+developental+stages+may+be+retained+producing+sudden+changes+in+evolutionary%0Ahistory.&rft.date=1994&rft.type=Journal+(On-line%2FUnpaginated)&rft.type=PeerReviewed&rft.format=application%2Fpdf&rft.identifier=http%3A%2F%2Fcogprints.org%2F2025%2F3%2Fcangelosi-migration-ncns94.pdf&rft.identifier=++Cangelosi%2C+Angelo+and+Parisi%2C+Domenico+and+Nolfi%2C+Stefano++(1994)+Cell+division+and+migration+in+a+'genotype'+for+neural+networks.++%5BJournal+(On-line%2FUnpaginated)%5D+++++&rft.relation=http%3A%2F%2Fcogprints.org%2F2025%2F