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In this example, the range of the signal is small (ca. 1.75-2.25 microsiemens for the visible signal range - compare to subject above peaking above 9 micro siemens). Remember, in the EDA preferences, you selected a baseline, threshold and a rejection percentage of amplitude height that will all determine whether a peak qualifies as an SCR. Therefore, we leave it up to the software to decide whether the fluctuations are large enough to report as an SCR. It is important to apply the same threshold to all subjects and data.

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Partly usable with effort

In the following example, the signal is good until the last section of the task. In the focus area labeled “Rest5”, there are several signal artifacts. If you run the SCR analysis, markers for SCRs will show up on the artifacts, THESE NEED TO BE REMOVED. The reason this is ok in this particular case is that SCRs occur within a few seconds after an event, but not minutes after. Since these SCRs are not related to the (in this case) sigh, it is ok to delete them.

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Real signal disturbance, do not use

In the following example, there are clear technical artifacts. This signal needs to be discarded, there is no way to rescue this.

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This is the same file, just zoomed in around “Sigh2”

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