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  • Title: Presumed 'prefrontal cortex' lesions in pigeons: effects on visual discrimination performance.
    Author: Aldavert-Vera L, Costa-Miserachs D, Divac I, Delius JD.
    Journal: Behav Brain Res; 1999 Jul; 102(1-2):165-70. PubMed ID: 10403024.
    Abstract:
    The posterodorsolateral neostriatum (PDLNS) in pigeons may be an equivalent of the prefrontal cortex (PFC) in mammals. Here we report that lesions of this brain region in pigeons have a detrimental effect on various learned visual discriminations. Pigeons with lesions of the overlying area corticoidea dorsolateralis (CDL) served as controls. Both the postoperative re-learning to criterion of a preoperatively learned simultaneous double visual mirror pattern discrimination and the learning of a simple successive go, no-go discrimination were impaired by the PDLNS lesions. The PDLNS and CDL groups did not differ significantly in the postoperative learning of a reversal of the simultaneous discrimination. The results are discussed in relation to the presumed equivalence between the avian PDNLS and the mammalian PFC.
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