Cited by 180Heart Rate Variability and Autonomic ControlNon-Invasive Vital Sign MonitoringEmotion and Mood Recognition

Validating Measures of Electrodermal Activity and Heart Rate Variability Derived From the Empatica E4 Utilized in Research Settings That Involve Interactive Dyadic States

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Milstein, Nir, Gordon, Ilanit·2020·Frontiers in Behavioral Neuroscience

Abstract

Portable and wireless devices that collect physiological data are becoming more and more sought after in clinical and psychophysiological research as technology swiftly advances. These devices allow for data collection in interactive states, such as dyadic therapy, with reduced restraints compared to traditional laboratory devices. One such portable device is the Empatica E4 wristband (Empatica Srl, Milan, Italy) which allows quantifying cardiac interbeat intervals (IBIs), heart rate variability (HRV), and electro-dermal activity (EDA), as well as several other acceleration and temperature measures. In the current study, we aimed to assess IBI, HRV, and EDA measures, against the same data collected from the well-validated MindWare mobile impedance cardiograph device (MindWare Technology, Gahanna, OH, United States). We assessed the E4 strictly as a research instrument and not as a clinical tool. We were specifically interested in the wristbands' performance during naturalistic interactive face-to-face conversations which inherently involve more hand movements. We collected data from 30 participants, nested in 15 dyads, which were connected to both devices simultaneously, during rest and during a social conversation. After preprocessing and analyses, we found that mean IBIs obtained by the E4 and the MindWare device, were highly similar during rest and during conversation. Medium to high correlations were found between the devices with respect to several HRV measures, with higher correlations during rest compared to conversation. The E4 failed to produce reliable EDA data. We conclude by discussing the strengths and limitations of the E4 during seated conversational states and suggest optimal ways to collect and analyze data with the E4.

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  • A complete loss of contact results in a 0-line for the EDA signal; motion artifacts without contact loss result in abrupt level changes or high amplitude fluctuations; and PPG shows considerable deviation from expected signal patterns.

    “While a complete loss of contact results in a 0-line for the EDA signal, motion artifacts without contact loss result in abrupt level changes or high amplitude fluctuations, and PPG shows considerable deviation from expected signal patterns24,42.”

    From Data quality evaluation in wearable monitoring (2022) · cites this paper as [42]

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  1. Kamath, M. V., Watanabe, M. A., and Upton, A. R. M. (2012). Heart rate variability (HRV) signal analysis: Clinical applications. Heart Rate Variability (HRV) Signal Analysis: Clinical Applications. Boca Raton, FL: CRC Press.
  2. Kuusela, T. (2012). "Heart rate variability (HRV) signal analysis: clinical applications, " in Heart Rate Variability (HRV) Signal Analysis: Clinical Applications, eds A. R. M. Upton, M. A. Watanabe, and M. V. Kamath (Boca Raton, FL: CRC Press), 9-43.

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Authors
Milstein, N., & Gordon, I.
Affiliations
Bar-Ilan University (IL)
Corresponding author
Gordon, Ilanit
Venue
Frontiers in Behavioral Neuroscience
Published
2020-08-18
Volume
14
Pages
148-148
ISSN
1662-5153 (ISSN-L)
OpenAlex
W3058974884
Cited by
180
References
43
Citations by year
2026: 28 · 2025: 29 · 2024: 32 · 2023: 44 · 2022: 29 · 2021: 17 · 2020: 1
FWCI
14.08
Type
journal article
Language
en
Open access
Locations
  • Frontiers in Behavioral Neuroscience (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
Israel Science Foundation
Topics
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Heart Rate Variability and Autonomic Control
  • Physical Sciences › Engineering › Biomedical Engineering › Non-Invasive Vital Sign Monitoring
  • Social Sciences › Psychology › Experimental and Cognitive Psychology › Emotion and Mood Recognition
Keywords
Empatica E4, electrodermal activity, heart rate variability, RR interval, device validation, dyadic therapy, face-to-face communication, naturalistic interaction, psychophysiological measurement, measurement reliability

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