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Auditory extinction following hemisphere damage.

E De Renzi, M Gentilini, F Pattacini

    Neuropsychologia
    |January 1, 1984
    PubMed
    Summary
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    Auditory extinction, a sensory processing issue, affects nearly half of stroke patients early on. This symptom

    Area of Science:

    • Neuroscience
    • Auditory Perception
    • Cerebrovascular Disease

    Background:

    • Auditory extinction is a phenomenon where individuals fail to perceive a sound in one ear when presented simultaneously with a sound in the other ear.
    • This symptom is often associated with brain injury, particularly stroke.

    Purpose of the Study:

    • To investigate the occurrence and characteristics of auditory extinction in patients with acute cerebrovascular disease.
    • To explore the relationship between auditory extinction and factors such as hemisphere of brain damage, duration of symptoms, and co-occurrence with visual extinction.

    Main Methods:

    • Patients with acute cerebrovascular disease were assessed for auditory extinction using simultaneous sound presentation to both ears.
    • Clinical data and CT scans were used to correlate the presence and duration of auditory extinction with lesion location and characteristics.

    Related Experiment Videos

  • Comparisons were made between patients with left and right hemisphere damage, and between auditory and visual extinction.

    • Main Results:

    • Nearly half of the patients with acute cerebrovascular disease exhibited auditory extinction in the early stages of stroke.
    • The occurrence of auditory extinction did not significantly differ between left and right hemisphere damage, though right-hemisphere patients showed longer-lasting symptoms.
    • Auditory extinction was independent of visual extinction, with some patients showing severe visual neglect but no auditory extinction.

    Conclusions:

    • Auditory extinction is a common early symptom in acute cerebrovascular disease.
    • Long-lasting auditory extinction may be linked to lesions affecting auditory pathways, suggesting a sensory basis rather than purely attentional.
    • Further research is needed to fully elucidate the mechanisms underlying auditory extinction in stroke patients.