?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=Assymetric+rotational+(circling)+behavior%2C+a+dopamine-related+asymmetry%2C+preliminary+findings+in+unmedicated+and+never-medicated+schizophrenic+patients&rft.creator=Bracha%2C+HS&rft.subject=Neuropsychiatry&rft.subject=Neurology&rft.description=Circling+behavior+is+one+of+the+best+understood+behaviors+in+animals.+It+is%2C+for+the+most+part%2C+dopaminergically+mediated+and+related+to+asymmetry+in+dopaminergic+activity+between+the+left+and+right+basal+ganglia+or+left+and+right+frontal+cortex.+As+a+rule%2C+animals+rotate+toward+the+hemisphere+with+lower+striatal+dopaminergic+activity.+A+direct+technique+to+find+human+analogs+of+circling+behavior+was+not+available.+We+have+developed+an+automated+rotometer+with+which+we+can+apply+the+circling+rodent+model+to+humans.+Left-prone+circling+behavior+(neglect+of+right-sided+turning)+was+found+in+10+unmedicated+schizophrenic+patients%2C+whereas+85+normal+controls+demonstrated+almost+equal+right+and+left+turning.+These+preliminary+results+may+suggest+the+presence+of+a+dopaminergic+asymmetry+in+some+unmedicated+schizophrenic+patients%3B+that+is%2C+right+anterior+subcortical+or+cortical+structures+of+the+brain+may+manifest+a+relative+dopaminergic+overactivity+compared+to+left+anterior+structures+in+at+least+some+unmedicated+patients+with+schizophrenia.&rft.date=1987&rft.type=Journal+(Paginated)&rft.type=NonPeerReviewed&rft.format=application%2Fpdf&rft.identifier=http%3A%2F%2Fcogprints.org%2F5302%2F1%2FBracha_et_al.%252C_Asymmetric_Rotational_Behavior_-_Biol_Psych_1987.PDF&rft.identifier=++Bracha%2C+HS++(1987)+Assymetric+rotational+(circling)+behavior%2C+a+dopamine-related+asymmetry%2C+preliminary+findings+in+unmedicated+and+never-medicated+schizophrenic+patients.++%5BJournal+(Paginated)%5D+++++&rft.relation=http%3A%2F%2Fcogprints.org%2F5302%2F