?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=Effects+of+hypothalamic+knife+cuts+and+experience+on+maternal+behavior+in+the+rat&rft.creator=Franz%2C+J.R.&rft.creator=Leo%2C+R.J.&rft.creator=Steuer%2C+M.+A.&rft.creator=Kristal%2C+Dr.+Mark+B.&rft.subject=Physiological+Psychology&rft.subject=Behavioral+Neuroscience&rft.subject=Neuroanatomy&rft.description=Recent+investigations+suggest+that+the+disruption+of+placentophagia%2C+pup-directed+maternal+behavior%2C+and+nestbuilding+seen+after+lesions+of+the+medial+preoptic+area+(MPO)+or+the+lateral+hypothalamus+may+be+due+to+the+interruption+at+different+points+of+a+single+longitudinal+neural+system+mediating+these+behaviors.+To+test+this%2C+we+compared+the+effects+of+knife+cuts+on+the+lateral+border+of+the+MPO%2C+and+of+the+posterior+medial+forebrain+bundle+(MFB)%2C+with+asymmetrical+cuts+combining+a+unilateral+MPO+cut+with+a+contralateral+MFB+cut.+We+observed+placentophagia%2C+nestbuilding%2C+and+pup-directed+maternal+behaviors+at%2C+and+after%2C+parturition+in+both+primiparous+and+biparous+rats.+In+primiparae%2C+MPO+cuts+(a)+disrupted+placentophagia%2C+(b)+delayed+the+onset+of+crouching+and+pup-licking%2C+and+(c)+eliminated+retrieval+and+nestbuilding.+Asymmetrical+cuts+(a)+disrupted+placentophagia%2C+and+(b)+delayed+the+onset+of+maternal+behavior.+In+biparous+rats%2C+MPO+cuts+eliminated+nestbuilding+and+retrieval.+MFB+cuts+(a)+disrupted+placentophagia%2C+and+(b)+eliminated+nestbuilding.+Asymmetrical+cuts+(a)+delayed+nestbuilding.+These+results+suggest+the+involvement+of+a+longitudinal+neural+system+in+the+production+of+immediate+pup-directed+maternal+behavior%2C+placentophagia%2C+and+nestbuilding+in+parturient+primiparae%2C+but+which+is+not+critical+for+the+eventual+display+of+maternal+behavior+and+nestbuilding+in+maternally+naive+rats%2C+nor+for+the+immediate+onset+of+placentophagia+and+maternal+behavior+in+maternally+experienced+rats.&rft.publisher=Pergamon+Journals&rft.date=1986&rft.type=Journal+(Paginated)&rft.type=PeerReviewed&rft.format=application%2Fpdf&rft.identifier=http%3A%2F%2Fcogprints.org%2F5801%2F1%2Fknife.pdf&rft.identifier=++Franz%2C+J.R.+and+Leo%2C+R.J.+and+Steuer%2C+M.+A.+and+Kristal%2C+Dr.+Mark+B.++(1986)+Effects+of+hypothalamic+knife+cuts+and+experience+on+maternal+behavior+in+the+rat.++%5BJournal+(Paginated)%5D+++++&rft.relation=http%3A%2F%2Fcogprints.org%2F5801%2F