Learning to learn: Making sense of electrophysiology data

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dc.contributor.advisorSwann, Nicoleen_US
dc.contributor.authorLeriche, Ryanen_US
dc.date.accessioned2020-06-04T21:38:11Z
dc.date.available2020-06-04T21:38:11Z
dc.descriptionProject files are comprised of 19 page pdf and presentation recording in mp4 format.en_US
dc.description.abstractWith no previous signal processing background, I began to study how electrical brain waves vary with movement speed and uncertainty. I learned when fleshing out the details or just seeing the big picture made sense for the techniques I used. My lab uses scalp-electroencephalography (EEG) to record brain activity. EEG data can be noisy, but there are methods see through this notice. After some pre-processing, I ran an independent component analysis to decompose a complex signal into its sub-signals. I removed the eye movement sub-signals as I just was interested in brain activity. With kurtosis values—the sharpness of a signal—I could remove artifactual trials. I was uncomfortable using ICA and kurtosis measures without knowing exactly how they worked. Learning every nuance would have halted my analysis progression. So, with a conceptual understanding, I used these tools to generate a cleaner EEG signal. With a clean signal, I began my time-frequency analysis. This would describe how well a sine wave at a given frequency represents my signal. I could not get a conceptual hold on this topic. After pausing my analysis and taking an online course—at my PI’s suggestion—my progress accelerated. I now could examine how electrical brain activity changes with movement uncertainty and speed. My analysis suggests that brain activity increases with slower movements; however, now I need to learn how to statistically verify this result.
dc.identifier.orcidhttps://orcid.org/0000-0003-1477-4982
dc.identifier.urihttps://hdl.handle.net/1794/25363
dc.rightsCreative Commons BY-NC-ND 4.0-USen_US
dc.subject2020 URS Data Stories
dc.titleLearning to learn: Making sense of electrophysiology dataen_US

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