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[Monocular ocular bobbing]

G Bini, G Cruccu

    Rivista Di Neurologia
    |January 1, 1980
    PubMed
    Summary
    This summary is machine-generated.

    Ocular bobbing, an involuntary eye movement, can occur in coma from pontine lesions. This case showed monocular bobbing, exacerbated by stimulation, linked to a pons infarction.

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    Area of Science:

    • Neurology
    • Ophthalmology
    • Neuroscience

    Background:

    • Ocular bobbing is an abnormal eye movement characterized by downward jerks followed by a slow return to center.
    • It is typically associated with coma resulting from vascular lesions in the pons.

    Observation:

    • A patient in a coma following basilar thrombosis exhibited ocular bobbing.
    • Initially conjugate, the eye movements became limited to one eye, termed "monocular bobbing."
    • Stimulation (caloric, neck pinching, visual) increased the amplitude and frequency of the movements.

    Findings:

    • Post-mortem examination revealed extensive ischemic infarction of the pons, middle cerebellar peduncles, and cerebellar white matter.
    • The observed monocular bobbing correlated with the pontine lesion.

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    Implications:

    • This case reinforces the association between pontine lesions and ocular bobbing, including its monocular variant.
    • Understanding ocular bobbing aids in localizing brainstem lesions in comatose patients.
    • The phenomenon's modulation by stimulation offers insights into brainstem-cerebellar pathways.