Biomaterial Database

Mental Stress Detection Using a Wearable In-Ear Plethysmography. 2023

Hika Barki, and Wan-Young Chung

Department of AI Convergence, Pukyong National University, Busan 48513, Republic of Korea.

This study presents an ear-mounted photoplethysmography (PPG) system that is designed to detect mental stress. Mental stress is a prevalent condition that can negatively impact an individual's health and well-being. Early detection and treatment of mental stress are crucial for preventing related illnesses and maintaining overall wellness. The study used data from 14 participants that were collected in a controlled environment. The participants were subjected to stress-inducing tasks such as the Stroop color-word test and mathematical calculations. The raw PPG signal was then preprocessed and transformed into scalograms using continuous wavelet transform (CWT). A convolutional neural network classifier was then used to classify the transformed signals as stressed or non-stressed. The results of the study show that the PPG system achieved high levels of accuracy (92.04%) and F1-score (90.8%). Furthermore, by adding white Gaussian noise to the raw PPG signals, the results were improved even more, with an accuracy of 96.02% and an F1-score of 95.24%. The proposed ear-mounted device shows great promise as a reliable tool for the early detection and treatment of mental stress, potentially revolutionizing the field of mental health and well-being.

UI	MeSH Term	Description	Entries
D006339	Heart Rate	The number of times the HEART VENTRICLES contract per unit of time, usually per minute.	Cardiac Rate,Chronotropism, Cardiac,Heart Rate Control,Heartbeat,Pulse Rate,Cardiac Chronotropy,Cardiac Chronotropism,Cardiac Rates,Chronotropy, Cardiac,Control, Heart Rate,Heart Rates,Heartbeats,Pulse Rates,Rate Control, Heart,Rate, Cardiac,Rate, Heart,Rate, Pulse
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000076251	Wearable Electronic Devices	Electronic implements worn on the body as an implant or as an accessory. Examples include wearable diagnostic devices, wearable ACTIVITY TRACKERS, wearable INFUSION PUMPS, wearable computing devices, SENSORY AIDS, and electronic pest repellents.	Wearable Computer,Electronic Skin,Wearable Devices,Wearable Technology,Computer, Wearable,Device, Wearable,Device, Wearable Electronic,Electronic Device, Wearable,Skin, Electronic,Technology, Wearable,Wearable Computers,Wearable Device,Wearable Electronic Device,Wearable Technologies
D000465	Algorithms	A procedure consisting of a sequence of algebraic formulas and/or logical steps to calculate or determine a given task.	Algorithm
D016571	Neural Networks, Computer	A computer architecture, implementable in either hardware or software, modeled after biological neural networks. Like the biological system in which the processing capability is a result of the interconnection strengths between arrays of nonlinear processing nodes, computerized neural networks, often called perceptrons or multilayer connectionist models, consist of neuron-like units. A homogeneous group of units makes up a layer. These networks are good at pattern recognition. They are adaptive, performing tasks by example, and thus are better for decision-making than are linear learning machines or cluster analysis. They do not require explicit programming.	Computational Neural Networks,Connectionist Models,Models, Neural Network,Neural Network Models,Neural Networks (Computer),Perceptrons,Computational Neural Network,Computer Neural Network,Computer Neural Networks,Connectionist Model,Model, Connectionist,Model, Neural Network,Models, Connectionist,Network Model, Neural,Network Models, Neural,Network, Computational Neural,Network, Computer Neural,Network, Neural (Computer),Networks, Computational Neural,Networks, Computer Neural,Networks, Neural (Computer),Neural Network (Computer),Neural Network Model,Neural Network, Computational,Neural Network, Computer,Neural Networks, Computational,Perceptron
D017156	Photoplethysmography	Plethysmographic determination in which the intensity of light reflected from the skin surface and the red cells below is measured to determine the blood volume of the respective area. There are two types, transmission and reflectance.	Light Reflection Rheography,Photoreflexometry,Rheography, Light Reflection,Light Reflection Rheographies,Photoplethysmographies,Photoreflexometries,Rheographies, Light Reflection
D058067	Wavelet Analysis	Signal and data processing method that uses decomposition of wavelets to approximate, estimate, or compress signals with finite time and frequency domains. It represents a signal or data in terms of a fast decaying wavelet series from the original prototype wavelet, called the mother wavelet. This mathematical algorithm has been adopted widely in biomedical disciplines for data and signal processing in noise removal and audio/image compression (e.g., EEG and MRI).	Spatiotemporal Wavelet Analysis,Wavelet Signal Processing,Wavelet Transform,Analyses, Spatiotemporal Wavelet,Analyses, Wavelet,Analysis, Spatiotemporal Wavelet,Analysis, Wavelet,Processing, Wavelet Signal,Processings, Wavelet Signal,Signal Processing, Wavelet,Signal Processings, Wavelet,Spatiotemporal Wavelet Analyses,Transform, Wavelet,Transforms, Wavelet,Wavelet Analyses,Wavelet Analyses, Spatiotemporal,Wavelet Analysis, Spatiotemporal,Wavelet Signal Processings,Wavelet Transforms

Related Publications

Hika Barki, and Wan-Young Chung

Towards mental stress detection using wearable physiological sensors.

January 2011, Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference,

Hika Barki, and Wan-Young Chung

[Psychophysiologic indications of mental stress using acral impedance plethysmography].

January 1986, Zeitschrift fur Psychologie mit Zeitschrift fur angewandte Psychologie,

Hika Barki, and Wan-Young Chung

Microphotoelectric plethysmography using a rabbit ear chamber.

September 1965, Journal of applied physiology,

Hika Barki, and Wan-Young Chung

Real-Time Seizure Detection Using Behind-the-Ear Wearable System.

February 2024, Journal of clinical neurophysiology : official publication of the American Electroencephalographic Society,

Hika Barki, and Wan-Young Chung

Mental Fatigue Monitoring Using a Wearable Transparent Eye Detection System.

January 2016, Micromachines,