Yeo, Yi Lin and Kirlangic, Mehmet E. and Heyder, Stefan and Eko Supriyanto, Eko Supriyanto and Mohamad Salim, Maheza I. and Fiedler, Patrique and Haueisen, Jens (2023) Linear versus quadratic detrending in analyzing simultaneous changes in DC-EEG and transcutaneous pCO2. In: 45th Annual International Conference of the IEEE Engineering in Medicine and Biology Conference, EMBC 2023, 24 July 2023 - 27 July 2023, Sydney, Australia.
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Official URL: http://dx.doi.org/10.1109/EMBC40787.2023.10340855
Abstract
Physiological direct current (DC) potential shifts in electroencephalography (EEG) can be masked by artifacts such as slow electrode drifts. To reduce the influence of these artifacts, linear detrending has been proposed as a pre-processing step. We considered quadratic detrending, which has hardly been addressed for ultralow frequency components in EEG. We compared the performance of linear and quadratic detrending in simultaneously acquired DC-EEG and transcutaneous partial pressure of carbon dioxide during two activation methods: hyperventilation (HV) and apnea (AP). Quadratic detrending performed significantly better than linear detrending in HV, while for AP, our analysis was inconclusive with no statistical significance. We conclude that quadratic detrending should be considered for DC-EEG preprocessing.
| Item Type: | Conference or Workshop Item (Paper) |
|---|---|
| Uncontrolled Keywords: | activation method, current-potential, detrending |
| Subjects: | Q Science > Q Science (General) |
| Divisions: | Biosciences and Medical Engineering |
| ID Code: | 108422 |
| Deposited By: | Yanti Mohd Shah |
| Deposited On: | 01 Nov 2024 02:45 |
| Last Modified: | 01 Nov 2024 02:45 |
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