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  • Title: Effects of thalamic and olfactory cortical lesions on continuous olfactory delayed nonmatching-to-sample and olfactory discrimination in rats (Rattus norvegicus).
    Author: Zhang Y, Burk JA, Glode BM, Mair RG.
    Journal: Behav Neurosci; 1998 Feb; 112(1):39-53. PubMed ID: 9517814.
    Abstract:
    We conducted 2 studies to determine the importance of several brain systems for remembering odorants in a go/no-go delayed nonmatching-to-sample (DNMTS) task. In Experiment 1, impairments were observed for lesions of pyriform cortex or (to a lesser extent) the lateral internal medullary lamina of thalamus. Lesions of the entorhinal cortex or the mediodorsal (MDn) or the paracentral and centrolateral (PC-CL) thalamic nuclei did not affect DNMTS. In Experiment 2, an impairment comparable to the pyriform lesion was observed for a lesion of the intralaminar nuclei (PC-CL plus the central medial nucleus) but not for a larger lesion of MDn. None of the lesions in either study affected the ability to learn a 2-choice odor discrimination using go/no-go procedures comparable with the DNMTS task.
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