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Related Experiment Videos

Four dichotic speech tests before and after temporal lobectomy.

M E Collard, R P Lesser, H Lüders

    Ear and Hearing
    |December 1, 1986
    PubMed
    Summary

    Temporal lobectomy for intractable seizures improved ipsilateral ear scores on dichotic speech tests, particularly the Staggered Spondaic Word Test. Auditory processing capacity remained impaired but stable post-surgery.

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    Area of Science:

    • Neuroscience
    • Audiology
    • Neurosurgery

    Background:

    • Intractable seizures often necessitate surgical intervention like temporal lobectomy.
    • Dichotic speech tests assess auditory processing and hemispheric function.
    • Preoperative auditory deficits are common in patients with temporal lobe epilepsy.

    Purpose of the Study:

    • To evaluate the impact of temporal lobectomy on dichotic speech test performance.
    • To assess changes in auditory processing capacity following surgery.
    • To compare postoperative performance with preoperative deficits and normal subjects.

    Main Methods:

    • Thirty patients underwent four dichotic speech tests before and after temporal lobectomy.
    • Statistical significance was determined for changes in ipsilateral and contralateral ear scores.

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  • Total correct scores were analyzed to measure overall auditory processing capacity.

    • Main Results:

    • Ipsilateral ear scores significantly improved on the Staggered Spondaic Word Test and consonant-vowel syllables post-surgery.
    • Contralateral ear scores showed a nonsignificant decrease.
    • Overall auditory processing capacity, measured by total correct scores, was impaired preoperatively and remained unchanged or slightly improved postoperatively.

    Conclusions:

    • Temporal lobectomy can lead to improved ipsilateral auditory processing in patients with intractable seizures.
    • While overall auditory processing capacity may remain impaired, surgery does not necessarily worsen it.
    • Findings support the use of dichotic speech tests to monitor auditory function after temporal lobectomy.