Effects of Flexible Dry Electrode Design on Electrodermal Activity Stimulus Response Detection

Haddad, Peter A.; Servati, Amir; Soltanian, Saeid; Ko, Frank; Servati, Peyman

doi:10.1109/tbme.2017.2754220

Cited by 8 publications

(8 citation statements)

References 31 publications

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“…Importantly, the straps with hand-stitched e-textile electrodes were designed to be adjustable for use on the distal phalanx of index, middle, and little fingers. The final design for the EDA e-textile electrode straps, was influenced by the requirement of the electrodes to cover 140 sweat glands to effectively detect EDA stimulus responses, which was outlined in previous work [ 36 ]. The final size of the textile substrate was 6 cm long by 1 cm wide, which was specifically intended to be placed on the distal phalanx of the index, middle, and little fingers.…”

Section: Methodsmentioning

confidence: 99%

“…The chosen method to detect and record EDA stimulus responses has been previously described in detail in our previous work [ 36 ]. Briefly, skin conductance and the EDA response were recorded by utilizing an adapted Stroop color test [ 37 , 38 ].…”

Section: Methodsmentioning

confidence: 99%

“…EDA responses were measured three times for each finger location and substrate material, and at no time was a single e-textile strap was used twice in one location ( n = 3). In order to determine the reliability of the test method, the conventional EDA electrodes were compared against another set of standard EDA electrodes in previous work ( n = 1) [ 36 ]. The average minimum to maximum EDA signal percent change per sweat gland was evaluated to determine if there was a difference in the EDA waveforms recorded on the distal phalanx of the index, middle, and little fingers, regardless of textile substrate used ( n = 9).…”

Section: Methodsmentioning

confidence: 99%

“…To compare the EDA stimulus responses recorded during the 15-min tests, a statistical analysis similar to a previous study was done [ 36 ]. The EDA responses as a result of the Stroop color test were visually evaluated and sectioned 10 s before and 20 s after the stimulus for the standard electrodes.…”

Section: Methodsmentioning

confidence: 99%

“…The Pearson correlation coefficient [ 41 ] was used to compare the EDA response signals detected by e-textile and solid electrodes, a method that has been used before to compare EDA signals [ 22 , 36 , 42 ]. In order to evaluate the averages and the standard deviations of the Pearson correlation coefficients of different textile substrate materials and locations on the hand that were tested, a one-tailed paired t -test was used ( n = 3).…”

Section: Methodsmentioning

confidence: 99%

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Breathable Dry Silver/Silver Chloride Electronic Textile Electrodes for Electrodermal Activity Monitoring

et al. 2018

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The focus of this study is to design and integrate silver/silver chloride (Ag/AgCl) electronic textile (e-textile) electrodes into different textile substrates to evaluate their ability to monitor electrodermal activity (EDA). Ag/AgCl e-textiles were stitched into woven textiles of cotton, nylon, and polyester to function as EDA monitoring electrodes. EDA stimulus responses detected by dry e-textile electrodes at various locations on the hand were compared to the EDA signals collected by dry solid Ag/AgCl electrodes. 4-h EDA data with e-textile and clinically conventional rigid electrodes were compared in relation to skin surface temperature. The woven cotton textile substrate with e-textile electrodes (0.12 cm2 surface area, 0.40 cm distance) was the optimal material to detect the EDA stimulus responses with the highest average Pearson correlation coefficient of 0.913 ± 0.041 when placed on the distal phalanx of the middle finger. In addition, differences with EDA waveforms recorded on various fingers were observed. Trends of long-term measurements showed that skin surface temperature affected EDA signals recorded by non-breathable electrodes more than when e-textile electrodes were used. The effective design criteria outlined for e-textile electrodes can promote the development of comfortable and unobtrusive EDA monitoring systems, which can help improve our knowledge of the human neurological system.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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Breathable Dry Silver/Silver Chloride Electronic Textile Electrodes for Electrodermal Activity Monitoring

et al. 2018

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Light drive reversible color switching for rewritable media and encoding

Ren

Aodeng

et al. 2021

Materials & Design

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Computational design and optimization of electro-physiological sensors

et al. 2021

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Electro-physiological sensing devices are becoming increasingly common in diverse applications. However, designing such sensors in compact form factors and for high-quality signal acquisition is a challenging task even for experts, is typically done using heuristics, and requires extensive training. Our work proposes a computational approach for designing multi-modal electro-physiological sensors. By employing an optimization-based approach alongside an integrated predictive model for multiple modalities, compact sensors can be created which offer an optimal trade-off between high signal quality and small device size. The task is assisted by a graphical tool that allows to easily specify design preferences and to visually analyze the generated designs in real-time, enabling designer-in-the-loop optimization. Experimental results show high quantitative agreement between the prediction of the optimizer and experimentally collected physiological data. They demonstrate that generated designs can achieve an optimal balance between the size of the sensor and its signal acquisition capability, outperforming expert generated solutions.

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Effects of Flexible Dry Electrode Design on Electrodermal Activity Stimulus Response Detection

Abstract: This work presents a novel systematic approach to understand the effects of electrode designs on monitoring EDA which is of importance for the design of wearable EDA monitoring devices.

Cited by 8 publications

References 31 publications

Breathable Dry Silver/Silver Chloride Electronic Textile Electrodes for Electrodermal Activity Monitoring

Breathable Dry Silver/Silver Chloride Electronic Textile Electrodes for Electrodermal Activity Monitoring

Light drive reversible color switching for rewritable media and encoding

Computational design and optimization of electro-physiological sensors

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