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  • Title: Voluntary saccadic oscillations, resembling ocular flutter and opsoclonus.
    Author: Yee RD, Spiegel PH, Yamada T, Abel LA, Suzuki DA, Zee DS.
    Journal: J Neuroophthalmol; 1994 Jun; 14(2):95-101. PubMed ID: 7951936.
    Abstract:
    Two human subjects, who had no signs of other neurologic disorders, produced large amplitude, to-and-fro saccadic oscillations. One subject generated these oscillations intentionally. Eye movement recordings by DC electro-oculography and/or magnetic scleral search coil showed that the movements were bursts of conjugate saccades in opposing directions with no intersaccadic intervals. They were multidirectional (horizontal, vertical, or oblique), had amplitudes up to 40 degrees and had linear or curvilinear trajectories. These characteristics are similar to those of ocular flutter and opsoclonus in patients with brainstem and/or cerebellar disorders. Our observations show that fixation instabilities resembling ocular flutter and opsoclonus can be produced voluntarily.
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