Abstract
It is important to go through a validation process when developing new electroencephalography (EEG) electrodes, but it is impossible to keep the human mind constant, making the process difficult. It is also very difficult to identify noise and signals as the input signal is unknown. In this work, we have validated textile-based EEG electrodes constructed from a poly(3,4-ethylene dioxythiophene) polystyrene sulfonate:/polydimethylsiloxane coated cotton fabric using a textile-based head phantom. The performance of the textile-based electrode has also been compared against a commercial dry electrode. The textile electrodes collected a signal to a smaller skin-to-electrode impedance (−18.9%) and a higher signal-to-noise ratio (+3.45%) than Ag/AgCl dry electrodes. From an EEGLAB, it was observed that the inter-trial coherence and event-related spectral perturbation graphs of the textile-based electrodes were identical to the Ag/AgCl electrodes. Thus, these textile-based electrodes can be a potential alternative to monitor brain activity.
Highlights
IntroductionThe and most mostcomplex complexorgan organ human body, consisting of Thebrain brainisisthe the largest largest and inin thethe human body, consisting of more more than billion nerves [1]; it is considered as the central organ of the human nervous than 100 billion nerves [1]; it is considered as the central organ of the human nervous system system and, together with the spinal cord, forms the central nervous [2].The con-of and, together with the spinal cord, forms the central nervous systemsystem [2]
PEDOT/PSS-based [14] and silver-based [13] electrocardiography (ECG) electrodes have been reported to measure heart activity, but a scientific validation was not performed as part of that research as ECG signals were different from person to person and even for the same person over time
The PEDOT/PSS/PDMS paste was screen printed to knitted cotton fabric and, the printed fabric was dried at 70 °C for 10 min and cured at 150 °C for 3 min
Summary
The and most mostcomplex complexorgan organ human body, consisting of Thebrain brainisisthe the largest largest and inin thethe human body, consisting of more more than billion nerves [1]; it is considered as the central organ of the human nervous than 100 billion nerves [1]; it is considered as the central organ of the human nervous system system and, together with the spinal cord, forms the central nervous [2]. PEDOT/PSS-based [14] and silver-based [13] electrocardiography (ECG) electrodes have been reported to measure heart activity, but a scientific validation was not performed as part of that research as ECG signals were different from person to person and even for the same person over time. We have used poly(3,4-ethylenedioxythiophene) polystyrene sulfonate/polydimethylsiloxane (PEDOT/PSS/PDMS) electrodes to measure brain activity [17,21], and noticed that it is much more variable, with changes occurring polystyrene over seconds. Was used to validate the PEDOT/PSS/PDMS-based EEG electrodes
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