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POTENTIAL CHANGES OVER THE SCALP RESULTING FROM EYE MOVEMENTS Toshihiko Oikawa 1 , Yoshiko Fujitani 1 , Kenji Kuda 1 , Masae Hosogai 1 , Ryuji Sato 1 , Tsuyoshi Nomi 1 , Taiji Shimizu 1 1Department of Physiology, Tottori University School of Medicine pp.977-983
Published Date 1974/10/1
DOI https://doi.org/10.11477/mf.1406203605
  • Abstract
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An attempt was made to predict the amplitudes of potential changes on the head due to eye move-ments from those of the electro-oculograms (EOGs). Vertical and horizontal EOGs were led through the respective paired electrodes placed near the eyes and EEGs were monopolarly recorded in 5 normal subjects. The results obtained were as follows.

1) A downward eye movement induced a negative potential shift in v. EOG and also, though small, in EEG, while an upward movement resulted in a positive one.

2) In all 5 cases, potential amplitudes on the vertex during vertical eye movements showed a linear relation to those of v. EOG with statistical significance. The slope in that relation, i. e. pro-portional coefficient of vertex potential to v. EOG was found to be 0.19 to 0.25 in down rotation and O.14 to 0.22 in up rotation.

3) Topographical distribution of the eye move-ment potential along a central sagittal line did not correspond well to a simple exponential decay and the correlation between EEG and v. EOG became worse at the nearer to the occipital region. The slope at the forehead, Fpz was O.19 to 0.25 and O.14 to 0.22 in down and up movements, respec-tively.

4) Eyeblinks produced a monophasic positive po-tential in v. EOG and a positive change in EEG. The EEG changes over the head were not system-atic and predictable.


Copyright © 1974, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 2185-405X 印刷版ISSN 0006-8969 医学書院

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