A frontal cortical potential associated with saccades in humans (original) (raw)

Summary

We describe a frontal EEG potential which begins 25–35 ms before intentional saccadic eye movement. It consists of a 15–20 _μ_volt monophasic positive waveform with peak during or just after movement, and returns to EEG baseline 150–200 ms after its onset. The waveform is largest at a midline position just anterior to FZ (10–20 system), is independent of visual input such as fixation guides, and is not related to saccade direction or amplitude. The potential is difficult to observe in some subjects and is independent of the “pre-saccadic spike potential”. It may be related to the discharge of single cortical neurons that signal the initiation of saccadic movements, but not their exact metrics; a possible generator is the supplementary eye fields of the dorsomedial prefrontal cortex.

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Author notes

1. G. Adler
   Present address: Central Institute of Mental Health, J5, 1, Mannheim, FRG

Authors and Affiliations

1. Department of Physiology, University of Texas Health Science Center, 7703 Floyd Curl Drive, 78284, San Antonio, TX, USA
   B. A. Brooks-Eidelberg
2. Neurosurgical Research Laboratory, University of Saarland Medical School, W-6650, Homburg, Federal Republic of Germany
   G. Adler

Authors

1. B. A. Brooks-Eidelberg
2. G. Adler

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Brooks-Eidelberg, B.A., Adler, G. A frontal cortical potential associated with saccades in humans.Exp Brain Res 89, 441–446 (1992). https://doi.org/10.1007/BF00228260

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• Received: 19 February 1991
• Accepted: 31 October 1991
• Issue date: May 1992
• DOI: https://doi.org/10.1007/BF00228260

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