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  • Title: Olfactory pathways and the sense of smell.
    Author: Slotnick BM, Schoonover FW.
    Journal: Neurosci Biobehav Rev; 1992; 16(4):453-72. PubMed ID: 1480342.
    Abstract:
    Rats were trained using operant conditioning to detect isoamyl acetate vapor generated by an olfactometer. They received lesions of olfactory pathways and were tested for retention of the odor detection task and trained on two-odor tasks. Deficits in odor detection and two-odor discrimination were related to the extent to which lesions disconnected the olfactory bulb from the forebrain. Transection of only the lateral olfactory tract, only the anterior limb of the anterior commissure, or lesions of the olfactory tubercle had little effect but combined lesions of these structures produced severe deficits in both odor detection and discrimination. Only rats with almost complete transection of the olfactory peduncle or cortex were anosmic; those with transections that spared a small segment of tissue between the olfactory bulb and olfactory cortex had detectable olfactory function. The results are discussed with regard to efferent connections of the olfactory bulb.
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