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Blink reflex in hemiplegia.

P Girlanda, R Dattola, C Messina

    European Neurology
    |January 1, 1984
    PubMed
    Summary
    This summary is machine-generated.

    Hemispheric lesions impact the blink reflex, causing depression in responses on the paretic side. Latency period evaluation is most reliable for understanding these neurological effects.

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    Area of Science:

    • Neuroscience
    • Clinical Electrophysiology

    Background:

    • Conflicting data exists regarding hemispheric lesions' effects on the blink reflex.
    • The blink reflex is a crucial neurological assessment tool.

    Purpose of the Study:

    • To investigate the influence of hemispheric lesions on the blink reflex.
    • To identify reliable parameters for assessing blink reflex changes in hemiplegic patients.

    Main Methods:

    • Electrically evoked blink reflex responses were evaluated using electromyography.
    • Investigated 21 hemiplegic patients and 11 control subjects.
    • Measured blink reflex duration, latency, and electric area.

    Main Results:

    • A depression of ipsilateral and consensual late responses was observed after stimulating the paretic side.

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  • An increase in the early response and depression of the late response on the paretic side were noted, irrespective of stimulation side.
  • Blink reflex latency period proved to be the most significant and reliable parameter.

    • Conclusions:

    • Hemispheric lesions significantly alter blink reflex parameters.
    • Latency period measurement is a reliable indicator of blink reflex changes in hemiplegia.
    • Electric area measurement offers supplementary data but requires careful interpretation to avoid errors.