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With our current setup, we acquire 100 samples as a baseline at the beginning of the recording. NOTE: the oxy file that is automatically created from the COBI Studio recording was scaled to the baseline consisting of 100 samples at the beginning of the recording. Therefore, there is limited use of that file!
Note that a baseline ideally is close to the onset of each task, as the beginning of the experiment might not be representative of the person’s state of mind an hour or two later. For example, over the course of the experiment, participants get more and more tired, or potentially more and more agitated. This will again be different before vs. after the valsalva and before vs. after the meditation task. Therefore, we can manually determine a baseline that will serve to measure task-related signal changes.
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