?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=Persistence+of+the+pattern+of+feeding+in+chicks+with+hyperstriatal+lesions&rft.creator=Oades%2C+&rft.subject=Behavioral+Analysis&rft.subject=Behavioral+Neuroscience&rft.subject=Animal+Cognition&rft.subject=Behavioral+Biology&rft.subject=Psychobiology&rft.description=Introduction%3A+%0AStrategies+for+coloured+food+pellet+selection+(response+sequences+to+one+or+another+colour)+were+studied+after+training+for+a+red+(vs.+yellow)+preference+on+a+board+with%2Fwithout+distracting+coloured+pebbles.%0AVarious+lesions+in+the+dorsomedial+hyperstriatum+accessorium+(DMHA)+of+chicks+were+investigated+because+a)+a+substrate+with+functions+similar+to+the+mammalian+hippocampus+has+been+proposed+for+this+region+(Oades+1976)%2C+b)+perseveration+of+choice+based+on+persistent+stimulus+representations+is+a+feature+of+selective+attention+after+hippocampal+brain-damage%2C+and+c)+treatment+with+testosterone%2C+with+uptake+sites+in+the+hippocampus+(i.a)+also+induced+persistence+in+this+task+Rogers%2C+1971%3B+Andrew%2C+1972).%0A%0AMethods%3A%0AOperation%3A+Chicks+were+given+aspiration+lesions+or+bilateral+scalpel+cuts+to+disconnect+the+DMHA+on+day+10+of+life+(5+types+of+lesion)+and+along+with+sham-operates+first+exposed+to+the+the+training+regime+24h+later.%0ATraining%2Ftesting%3A+Birds+were+given+red-dyed+food+for+10+days%2C+(but+would+accept+normal+yellow+grains).+On+test+they+were+presented+with+200+red%2C+200+yellow+grains+spread+on+either+a+plain+perspex+floor+or+one+with+pebbles+coloured+like+the+food+glued+to+the+floor%2C+and+the+identity+of+the+first+100+pecks+scored.+The+influence+of+priming+with+50+pecks+on+one+or+the+other+colour+vs.+overnight+experience+of+the+non-preferred+colour+of+food+was+also+tested+over+2+days%0AResults%3A+%0A1%2F+Colour+choice+in+terms+of+mean+run+length+(MRL)+or+first+10+pecks+was+more+stable+in+the+lesioned+birds+and+varied+more+with+the+test+(and+prior+experience)+in+intact+animals.%0A2%2F+On+the+plain+floor+-+controls+decreased+their+non-preferred+food+intake+on+day+1%2C+but+with+overnight+experience+increased+it+markedly+on+day+2.%0A3%2F+On+the+pebble+floor+-+controls+were+more+distracted+and+pecked+more+pebbles.+By+comparison+the+DMHA+group+retained+longer+MRL+for+the+trained+colour+preference.%0A4%2F+Chicks+with+lesions+more+lateral+to+the+DMHA+differed+by+showing+a+disruption+of+the+trained+preference%0A5%2F+Chicks+with+more+ventral+or+more+posterior+brain-damage+showed+a+food+choice+pattern+that+was+indistinguishable+from+intact+controls.%0A%0AConclusions%3A%0AThe+lack+of+lability+of+the+trained+feeding+preferences+of+the+DMHA+animals+(whether+primed+for+short+or+long+periods)+and+in+the+face+of+distracting+stimuli+is+interpreted+as+consistent+with+the+functions+of+the+mammalian+hippocampus+in+tests+of+selective+attention.+Different+behaviour+following+damage+to+the+DMHA+periphery+point+to+the+specificity+of+the+role+attributed+to+the+hyperstriatum+accessorium+%0A&rft.publisher=Karger&rft.date=1976&rft.type=Journal+(Paginated)&rft.type=PeerReviewed&rft.format=application%2Fpdf&rft.identifier=http%3A%2F%2Fcogprints.org%2F1613%2F2%2Fbird-hpc-feed-76.pdf&rft.identifier=++Oades%2C+++(1976)+Persistence+of+the+pattern+of+feeding+in+chicks+with+hyperstriatal+lesions.++%5BJournal+(Paginated)%5D+++++&rft.relation=http%3A%2F%2Fcogprints.org%2F1613%2F