Net Station Waveform Tools - College of Education & Human ...

Ocular Artifact Removal
Specification Editor
Figure 15-1 shows the Ocular Artifact Removal specification editor.
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Figure 15-1. Ocular Artifact Removal specification editor
The following are brief descriptions of the numbered items from Figure 15-1.
Net Station Waveform Tools Technical Manual S-MAN-200-WFTR-001 • December 21, 2006
15: Ocular Artifact Removal
1. Blink Slope Threshold text box. Allows you to type in a value for determining
whether an eye blink has occurred on the eye-blink channel. For more information,
see the “Blink Slope Threshold” section on page 122.
2. Flatten Eye Channels checkboxes. When this checkbox is selected, the algorithm
flattens the eye channels after correcting for ocular artifacts. The flattened channels
ensure that they will be marked “bad” if you run the Artifact Detection tool on the file
after running OAR, as suggested on page 29. The data are unusable because the
algorithm uses data from these channels to remove the ocular artifacts from all other
channels. Therefore, the eye channels cannot be corrected.
Caution!: If you leave the “Flatten Eye Channels” checkbox unselected, then you
should manually mark the eye channels as “bad,” to ensure that they are excluded
from future operations.
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