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Some observations on electroencephalograms of myoclonus epilepsy
  1. I. Kadobayashi,
  2. G. Ukida,
  3. I. Kawai1
  1. Department of Psychiatry, Kyoto Prefectural University of Medicine, Kawaramachi-hirokoji, Kamigyo-ku, Kyoto, Japan

    Abstract

    Electroencephalographic observations of four cases of myoclonus epilepsy are reported. A feature in EEG findings was that spikes became more prominent in the later stage of illness. Photic stimulation had a distinct activating effect on producing paroxysms, and an increase in number of paroxysms depended not on the frequency of stimulus but on the intensity. A sleep EEG showed ill-formed humps and sigma rhythm with infrequent paroxysms. It is suggested that these observations might be due to a disturbance in the function of subcortical structures.

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    Footnotes

    • 1 Present address: Department of Psychiatry, Kyoto University, Sakyo-ku, Kyoto, Japan.

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