MCB 167Discussion assignment for Friday, March 5Mechanisms for learning of sound location in barn owlsReading :Linkenhoker BA, von der Ohe CG, Knudsen EI. Anatomical traces of juvenile learning in the auditorysystem of adult barn owls.Nature Neuroscience8: 93"98, 2004.Reading guide.Prism spectacles that shift the visual world in azimuth cause owls to learn a new ITDmap. This learning is usually restricted to a critical period (<200 days of age), with adults showing verylittle or no learning. However, when owls wear prisms as juveniles and learned a new ITD map, but thenthe prisms are removed and the normal ITD map is restored, these owls can later rapidly reaquire thelearned map when prisms are put back on as adults. Thus, early learning can enable adult plasticity.This paper investigates what neurobiological trace of early learning is left in the owl brain to enableadult reaquisition of the learned ITD map.
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