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Related Experiment Videos

Pattern visual evoked responses in hereditary spastic paraplegia

I R Livingstone, F L Mastaglia, R Edis

    Journal of Neurology, Neurosurgery, and Psychiatry
    |February 1, 1981
    PubMed
    Summary

    Pattern visual evoked responses were normal in dominant hereditary spastic paraplegia but abnormal in some sporadic cases. This suggests potential differences in the underlying pathology between these forms of the condition.

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    Area of Science:

    • Neuroscience
    • Genetics
    • Ophthalmology

    Background:

    • Hereditary spastic paraplegia (HSP) is a group of inherited neurological disorders.
    • Visual evoked responses (VERs) are electrophysiological tests that measure the brain's response to visual stimuli.
    • Abnormalities in VERs can indicate dysfunction in the visual pathways.

    Purpose of the Study:

    • To investigate pattern visual evoked responses (pVERs) in patients with dominant hereditary spastic paraplegia (dHSP) and sporadic cases.
    • To determine if pVERs can help differentiate between inherited and non-inherited forms of spastic paraplegia.

    Main Methods:

    • pVERs were recorded in 13 patients from nine families with dHSP.
    • pVERs were also recorded in seven patients with sporadic spastic paraplegia.

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  • Comparison of pVER results between the two groups.

    • Main Results:

    • All 13 patients with dHSP exhibited normal pVERs.
    • Three out of seven patients with sporadic spastic paraplegia showed abnormal pVERs.
    • This indicates a potential difference in visual pathway involvement between dHSP and sporadic cases.

    Conclusions:

    • Normal pVERs in dominant hereditary spastic paraplegia suggest the visual pathways are typically unaffected in this form.
    • Abnormal pVERs in some sporadic cases may point to alternative underlying pathologies affecting the visual system.
    • pVERs could be a useful diagnostic tool in distinguishing between different types of spastic paraplegia.