ArticleSensors (Basel, Switzerland)2020
Validation of a Wireless Bluetooth Photoplethysmography Sensor Used on the Earlobe for Monitoring Heart Rate Variability Features during a Stress-Inducing Mental Task in Healthy Individuals.
Article in Sensors (Basel, Switzerland), 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers, 2 of them syntheses that pooled it.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
17 citing papers in PubMed, 2 syntheses or guidelines pooled it, 35 citations in OpenAlex.
- Accuracy of Photoplethysmography-Derived Pulse Rate Variability Compared with Electrocardiography-Derived Heart Rate Variability: A Systematic Review and Meta-Analysis.Sensors (Basel, Switzerland) · 2026Pooled it
- Health-Related Indicators Measured Using Earable Devices: Systematic Review.JMIR mHealth and uHealth · 2022Pooled it
- Advancing remote photoplethysmography (rPPG) to facilitate cardiac monitoring in naturalistic settings using webcam technology.Behavior research methods · 2026Article
- Quantifying Mental Stress Using Cardiovascular Responses: A Scoping Review.Sensors (Basel, Switzerland) · 2025Article
- Monitoring Resistance Training in Real Time with Wearable Technology: Current Applications and Future Directions.Bioengineering (Basel, Switzerland) · 2023Review
- Reliability of the Heart Rate Variability Registered Through Polar Cardio Frequency Meter in Individuals With Chronic Low Back Pain.Journal of chiropractic medicine · 2023Article
- The Use of Photoplethysmography in the Assessment of Mental Health: Scoping Review.JMIR mental health · 2023Article
- Mental Stress Detection Using a Wearable In-Ear Plethysmography.Biosensors · 2023Article
- A System Based on Photoplethysmography and Photobiomodulation for Autonomic Nervous System Measurement and Adjustment.Life (Basel, Switzerland) · 2023Article
- Photoplethysmography Enabled Wearable Devices and Stress Detection: A Scoping Review.Journal of personalized medicine · 2022Article
- A Review of Recent Advances in Vital Signals Monitoring of Sports and Health via Flexible Wearable Sensors.Sensors (Basel, Switzerland) · 2022Review
- Comparison of the autonomic nervous system dysfunction between different chronic spine disorders: neck pain versus low back pain.Revista da Associacao Medica Brasileira (1992) · 2022Article
- Photoplethysmogram Recording Length: Defining Minimal Length Requirement from Dynamical Characteristics.Sensors (Basel, Switzerland) · 2022Article
- Diagnostic Features and Potential Applications of PPG Signal in Healthcare: A Systematic Review.Healthcare (Basel, Switzerland) · 2022Review
- Identification of Video Game Addiction Using Heart-Rate Variability Parameters.Sensors (Basel, Switzerland) · 2021Article
- Alternative Devices for Heart Rate Variability Measures: A Comparative Test-Retest Reliability Study.Behavioral sciences (Basel, Switzerland) · 2021Article
- Wearable, Environmental, and Smartphone-Based Passive Sensing for Mental Health Monitoring.Frontiers in digital health · 2021Review
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
4 authors at 2 institutions in 1 country.
Funding
Abstract
Heart rate variability (HRV), using electrocardiography (ECG), has gained popularity as a biomarker of the stress response. Alternatives to HRV monitoring, like photoplethysmography (PPG), are being explored as cheaper and unobtrusive non-invasive technologies. We report a new wireless PPG sensor that was tested in detecting changes in HRV, elicited by a mentally stressful task, and to determine if its signal can be used as a surrogate of ECG for HRV analysis. Data were collected simultaneously from volunteers using a PPG and ECG sensor, during a resting and a mentally stressful task. HRV metrics were extracted from these signals and compared to determine the agreement between them and to determine if any changes occurred in the metrics due to the stressful task. For both tasks, a moderate/good agreement was found in the mean interbeat intervals, SDNN, LF, and SD2, and a poor agreement for the pNN50, RMSSD|SD1, and HF metrics. The majority of the tested HRV metrics obtained from the PPG signal showed a significant decrease caused by the mental task. The disagreement found between specific HRV features imposes caution when comparing metrics from different technologies. Nevertheless, the tested sensor was successful at detecting changes in the HRV caused by a mental stressor.
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What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.