Hey everyone!
We are currently designing an eye-tracking experiment which aims at assessing the effects of complex verbal stimuli (varying emotional valence and intensity) on gaze patterns. I am also measuring physilogical indicators (heart rate, EDA).
Between the emotion inducing stimuli participants will do a short breathing meditation with an emphasis on the outbreath. We do this in order to "neutralize" affect and increase parasympathetic activity as we are concerned with affect "spilling over" between trials.
I know that the parasymphatetic system is slower than the sympathetic but have not found literature on grounds of which I can make an informed decision on the duration of the meditation phase. Do you have any advice/literature for me on that one?
Thanks a lot!
You can take a baseline heart rate before starting, and then after the stimulus and during the relaxation exercise you watch the heart rate and decide it is ok when it is down to the baseline. Good luck!
Hi Anastasia,
thanks a lot for your helpful answer! I thought that maybe there is a certain duration I can apply for all participants and keep the meditation duration standardized between participants. But I see a great advantage in what you say, i.e. simply deciding on cool-down-duration based on individual online heart rate measurement. Do you know of literature where this already has been done?
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