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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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Presentation on theme: "In this patient, the ground electrode was placed on the forehead and the low-impedance active electrode occurred in the occipital region. Therefore, the."— Presentation transcript:

1 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 (T5-O1), O1 was not punched on G2 selection on the selector board. Blink artifacts appear in channel 4 because ground electrode was on forehead. Artifacts appear out of phase because Fp1 and Fp2 are on G1 while “active ” ground is on G2.13 Source: Artifacts, Atlas of Pediatric EEG Citation: Laoprasert P. Atlas of Pediatric EEG; 2011 Available at: Accessed: October 25, 2017 Copyright © 2017 McGraw-Hill Education. All rights reserved

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