Published in Sensors, 2026
We simultaneously recorded data from 8 EEG channels to the low-cost ($1,250) OpenBCI Cyton, and high-cost (>$30,000) Brain Products BrainAmp. Participants completed three standard ERP paradigms. Our signal comparisons show that the Cyton is able to record data with the same fidelity as the BrainAmp, and may even have lower variance.
Published in Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 2024
I often have undergraduate students fabricate EEG/EMG electrodes out of sanded pennies, which are mostly zinc. A few of these students were curious to quantify how good zinc was as an electrode. Preliminary results indicate that zinc might perform as well as some silver chloride electrodes.
Published in Proceedings of the Annual Meeting of the Cognitive Science Society, 2022
While analyzing data from a BCI speller, I noticed that my classifier did not perform equally well for different target letter complexities. After verifying the classifier was fine, I began looking at the neural data, and found that the complexity (set size) of the target letter produces monotonically decreasing P3b amplitude proportional to set size.