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Olfactory dysfunction in man: anatomical and behavioral aspects.

P J Eslinger, A R Damasio, G W Van Hoesen

    Brain and Cognition
    |July 1, 1982
    PubMed
    Summary
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    This review explores brain damage effects on smell (olfaction), linking structural issues to functional deficits. Current understanding of olfactory pathways and human brain organization remains limited due to research gaps.

    Area of Science:

    • Neuroscience
    • Olfactory research

    Background:

    • Olfaction is crucial for survival and quality of life.
    • Brain damage can significantly impair olfactory function.
    • Understanding the neural basis of olfaction is an ongoing challenge.

    Purpose of the Study:

    • To review studies correlating brain structure and function in patients with olfactory disorders.
    • To identify key brain regions involved in human olfaction.
    • To highlight limitations in current research and suggest future directions.

    Main Methods:

    • Systematic review of studies on patients with brain damage and olfactory deficits.
    • Analysis of neuroimaging and electrophysiological data.
    • Correlation of lesion localization with olfactory performance.

    Related Experiment Videos

    Main Results:

    • Identified olfactory bulbs, orbitofrontal cortex, medial temporal cortex, thalamus, and amygdala as key brain areas.
    • Demonstrated a link between structural brain damage and impaired olfactory detection, discrimination, and recognition.
    • Highlighted limitations including inadequate lesion localization and behavioral assessment.

    Conclusions:

    • Current knowledge of the human olfactory system's organization is limited.
    • Further research with precise lesion mapping and comprehensive behavioral testing is needed.
    • A detailed account of olfactory processing in the human brain requires addressing existing research gaps.