Design and characterization of a real-time, wearable, endosomatic electrodermal system

Affanni, Antonio; Chiorboli, G.

doi:10.1016/j.measurement.2015.07.047

Cited by 27 publications

(20 citation statements)

References 36 publications

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“…In contrast, the Obimon utilizes a 22-bit resolution A/D converter with very low noise specification (MCP3551/3) eliminating the need for complex preamplification or filtering, nor is it needed to subtract an estimated SCL value before analog-to-digital conversion, further improving the precision of measurements. For comparison, several small footprint EDA devices use 10-or 12-bit resolution (e.g., Affanni & Chiorboli, 2015;Boquete et al, 2012;Kappeler-Setz, Gravenhorst, Schumm, Arnrich, & Tröster, 2013;Poh et al, 2010;Savić & Geršak, 2015;Schmidt et al, 2016). The difference in resolution is from 100 to 1,000 times.…”

Section: System Design Of the Tested Device And Measurement Detailsmentioning

confidence: 99%

Obimon: An open‐source device enabling group measurement of electrodermal activity

et al. 2019

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Electrodermal activity (EDA) provides the means to gauge the activity of the sympathetic nervous system. Assessment of EDA for research purposes requires measurement systems that are sensitive to small changes in arousal in the full measurement range, collecting, storing, and monitoring data. The objective behind designing a new open-source device was to be able to measure EDA simultaneously on many subjects, monitoring their activity in real time remotely and collecting high precision data suitable for analyses. To assure feasibility of simultaneous measurements on multiple subjects, the devices must be compact and wearable, without compromising data quality. Experiments were carried out using synchronized devices in group and single subject environments. Validity of EDA measurements of Obimon was demonstrated compared to a reference system (Nexus) during a breathing exercise, a short movie, and while exposed to loud computer-generated tones, using Pearson correlation, Passing-Bablok regression, and Bland-Altman analysis. Seamless management of several Obimons and real-time visualization of EDA via Android phone/tablet application from a large number of participants was demonstrated. Based on analyses of the data collected, we conclude that the Obimon device presented here is a valid and feasible tool for collecting EDA in single or multisubject environments. K E Y W O R D Sarousal, electrodermal, group measurement, skin conductance, wireless 2 of 15 | KASOS et Al.

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Section: System Design Of the Tested Device And Measurement Detailsmentioning

confidence: 99%

Obimon: An open‐source device enabling group measurement of electrodermal activity

et al. 2019

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“…The feedback loop composed of the amplifier and the DC compensation block acts as a high-pass filter with cut-off frequency (2I) -1 , the chosen coincident with (2L) -1 =0.05 Hz. In this way, all the DC non-idealities of the amplifier (offset voltage, bias current, offset current) are removed by the DC compensation block [10].…”

Section: Analogue Front End Descriptionmentioning

confidence: 99%

“…Several bio-signals are measured while the subjects of such studies are doing tasks e.g. photoplethysmogram (PPG) [1], electroencephalogram (EEG) [2], electromyogram (EMG) [3], electrocardiogram (ECG) [4], [5], electrodermal activity (EDA) [6]- [10], and many others.…”

Section: Introductionmentioning

confidence: 99%

Dual channel electrodermal activity and an ECG wearable sensor to measure mental stress from the hands

Affanni

2019

ACTA IMEKO

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<p class="Abstract"><span lang="EN-US">The paper describes the design and characterisation of a dual-channel electrodermal activity (EDA) and ECG sensor for acquiring data from the hands. The need for dual-channel data acquisition is due to the removal of motion artefacts that may happen when EDA is measured on subjects when they are moving their hands in their everyday activities. The ECG channel is measured from the hands using the same electrodes that have already been used for EDA. This choice reduces the invasiveness of ECG measurement with respect to the usual vests or chest bands. The characterisation demonstrates high-level performance of the sensor in terms of linearity and jitter, even if the measurement on the hands provides a weaker ECG signal with respect to chest derivations. Even when the subject is using their hands, no artefacts were found in extracting the heart rate from ECG. </span></p>

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“…These systems are being developed for the monitoring of a variety of physiological signals to inform doctors or to raise an alarm in case of abnormalities or danger, e.g. body posture and falls monitoring [6,7], cardiovascular related signals [6,8], respiratory problems [6], thermal comfort [9], temporal pattern of perspiration [10], skin temperature [11], or mental stress via skin conductance [12].…”

Section: Introductionmentioning

confidence: 99%

Non-invasive and wearable early fever detection system for young children

Garcia-Souto

Dabnichki

2018

Measurement

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Fever in young children is taken seriously by healthcare professionals as it indicates an underlying infection which can be life-threatening. Core body temperature can be accurately measured using traditional techniques, but these are not suitable for non-invasive monitoring during normal life. This study investigates the possibility of fever monitoring in children under 2 years of age in a non-clinical setting based on various local skin temperatures. Various system designs are presented, i.e. single vs multi-sensor systems, and a set of sensors either localized or distributed across the body. The probability of positive fever identification on feverish children ranges from ~40% to 77% using 1 and 5 sensors respectively, while the detected false positives are a 10%. We conclude that a continuous and non-invasive fever monitoring in children under 2 years is possible by the propose method, providing a suitable solution for early fever detection and alert.

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Design and characterization of a real-time, wearable, endosomatic electrodermal system

Cited by 27 publications

References 36 publications

Obimon: An open‐source device enabling group measurement of electrodermal activity

Obimon: An open‐source device enabling group measurement of electrodermal activity

Dual channel electrodermal activity and an ECG wearable sensor to measure mental stress from the hands

Non-invasive and wearable early fever detection system for young children

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