In this patient, the ground electrode was placed on the forehead and the low-impedance active electrode occurred in the occipital region. Therefore, the.

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Copyright © 2004 The McGraw-Hill Companies, Inc. All rights reserved.

Copyright © 2004 The McGraw-Hill Companies, Inc. All rights reserved.

Presentation transcript:

In this patient, the ground electrode was placed on the forehead and the low-impedance active electrode occurred in the occipital region. Therefore, the eye movement artifacts were noted in the occipital region (asterisk) when the patient blinked his eyes. Due to the open circuit in channel 4 (O1-A1), O1 was not punched on G1 selection on the selector board. Blink artifacts appear in channel 4 because ground electrode was on forehead. Artifacts appear in phase because Fp1, Fp2, and “active ” ground are on G1.13 Source: Artifacts, Atlas of Pediatric EEG Citation: Laoprasert P. Atlas of Pediatric EEG; 2011 Available at: http://neurology.mhmedical.com/DownloadImage.aspx?image=/data/books/1042/lao001_fig_02-66.gif&sec=59079131&BookID=1042&ChapterSecID=59078724&imagename= Accessed: November 11, 2017 Copyright © 2017 McGraw-Hill Education. All rights reserved