The data stores changes in pupil size. The size of the pupil increases upon surprising events. We need to analyze the time points where there is meaningful increase/decrease in pupil size. The data has lots of artifacts that have to be removed. Here are the steps that need to be done:
1. Eyeblink removal- exclude segments that includes excessive eye blinks and artifacts
2. Interpolation - Cover remaining gaps
3. Baseline correction- baseline- correct relative to the average pupil size
5. Rejections - Reject the trials with excessive outliers (2 standard deviation)
Please let me know if you have further questions.
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