The studies of the attacks of abnormal eye movement in a case of infantile spasms

Folia Psychiatrica Et Neurologica Japonica
H HoritaS Endo

Abstract

We observed the attacks of nystagmus in a case of infantile spasms and carried out overnight sleep polygraphy. The following findings were obtained: (1) Awake time was prolonged to 56% of TIB, while sleep time was markedly shortened to 44% of TIB. Also REM sleep time was reduced to 20% of SPT and deep slow sleep (stage N3) was absent. (2) Attacks of nystagmus were observed only during wakefulness. At first, fast wave bursts appeared in the right occipital area, and were followed by left-upward deviations of eyeballs, and then the attacks of counterclockwise right-downward rotatory nystagmus. Also the fast wave bursts were succeeded by spreading of fast waves to adjacent areas. At the same time, EMG exhibited elevated muscle action potentials of mentalis and biceps femoris. During the attacks of nystagmus, there was alteration of respiratory movements. In NREM sleep, both fast wave bursts and the attacks of nystagmus were not observed. In REM sleep, the fast wave bursts and eye movements were observed but the attacks of nystagmus did not appear. During the fast wave bursts, alteration of respiratory movements were observed. From the results of this study, it was presumed that the brain lesions of this case were extended with sev...Continue Reading

References

Sep 1, 1975·Brain : a Journal of Neurology·F BehseG G Knappeis
Jan 1, 1974·Archives of Sexual Behavior·I KaracanC J Hursch
Mar 1, 1974·Brain : a Journal of Neurology·S GilmanL A Marco
Aug 1, 1969·The British Journal of Psychiatry : the Journal of Mental Science·I KaracanM W Heine
Jan 1, 1972·Brain : a Journal of Neurology·W I McDonald, M A Robertson

Citations

Jun 26, 2001·Psychiatry and Clinical Neurosciences·H Horita
Jan 22, 2004·Journal of Clinical Neurophysiology : Official Publication of the American Electroencephalographic Society·R A Hrachovy, J D Frost

Related Concepts

Electroencephalogram
Pulse Rate
Vertical Nystagmus
Respiration
Sleep Stages
Spasmus Nutans

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