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Fernando F. Locatelli, Patricia C. Fernandez, Francis Villareal, Kerem Muezzinoglu, Ramon Huerta, C. Giovanni Galizia and Brian H. Smith Nonassociative plasticity alters competitive interactions among mixture components in early olfactory processing European Journal of Neuroscience 37

Version of Record online: 21 NOV 2012 | DOI: 10.1111/ejn.12021

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Unreinforced exposure (top) to an odor causes honey bees to learn about that odor slowly when it is subsequently paired with reinforcement, which is called Latent Inhibition (Chandra et al., 2010). (A) A neural correlate of latent inhibition is found early in olfactory processing in the Antennal Lobes (middle left), where it biases the spatiotemporal response pattern generated by a mixture of the pre-exposed odor and a novel odor to be more like the novel odor. (B) Preexposure also biases perception of the preexposed odor in a mixture (middle right). (C) This early filtering mechanism can be best set up by hebbian synaptic plasticity at specific inhibitory synapses onto projection neurons that respond to the pre-exposed odor (bottom).

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