?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=Does+Corticothalamic+Feedback+Control+Cortical+Velocity+Tuning%3F&rft.creator=Hillenbrand%2C+Dr.+Ulrich&rft.creator=van+Hemmen%2C+Prof.+Dr.+J.+Leo&rft.subject=Neural+Modelling&rft.subject=Computational+Neuroscience&rft.subject=Theoretical+Biology&rft.description=The+thalamus+is+the+major+gate+to+the+cortex+and+its+contribution+to+cortical+receptive+field+properties+is+well+established.+Cortical+feedback+to+the+thalamus+is%2C+in+turn%2C+the+anatomically+dominant+input+to+relay+cells%2C+yet+its+influence+on+thalamic+processing+has+been+difficult+to+interpret.+For+an+understanding+of+complex+sensory+processing%2C+detailed+concepts+of+the+corticothalamic+interplay+need+yet+to+be+established.+To+study+corticogeniculate+processing+in+a+model%2C+we+draw+on+various+physiological+and+anatomical+data+concerning+the+intrinsic+dynamics+of+geniculate+relay+neurons%2C+the+cortical+influence+on+relay+modes%2C+lagged+and+nonlagged+neurons%2C+and+the+structure+of+visual+cortical+receptive+fields.+In+extensive+computer+simulations+we+elaborate+the+novel+hypothesis+that+the+visual+cortex+controls+via+feedback+the+temporal+response+properties+of+geniculate+relay+cells+in+a+way+that+alters+the+tuning+of+cortical+cells+for+speed.&rft.date=2001&rft.type=Journal+(Paginated)&rft.type=PeerReviewed&rft.format=application%2Fpdf&rft.identifier=http%3A%2F%2Fcogprints.org%2F2394%2F1%2FHillenbrand_vanHemmen_01.pdf&rft.identifier=++Hillenbrand%2C+Dr.+Ulrich+and+van+Hemmen%2C+Prof.+Dr.+J.+Leo++(2001)+Does+Corticothalamic+Feedback+Control+Cortical+Velocity+Tuning%3F++%5BJournal+(Paginated)%5D+++++&rft.relation=http%3A%2F%2Fcogprints.org%2F2394%2F