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Qi SY, Zhang SJ, Lin LL, Li YR, Chen JG, Ni YC, Du X, Zhang J, Ge P, Liu GH, Wu JY, Lin S, Gong M, Lin JW, Chen LF, He LL, Lin D. Quantifying attention in children with intellectual and developmental disabilities through multicenter electrooculogram signal analysis. Sci Rep 2024; 14:22186. [PMID: 39333619 PMCID: PMC11437286 DOI: 10.1038/s41598-024-70304-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2024] [Accepted: 08/14/2024] [Indexed: 09/29/2024] Open
Abstract
In a multicenter case-control investigation, we assessed the efficacy of the Electrooculogram Signal Analysis (EOG-SA) method, which integrates attention-related visual evocation, electrooculography, and nonlinear analysis, for distinguishing between intellectual and developmental disabilities (IDD) and typical development (TD) in children. Analyzing 127 participants (63 IDD, 64 TD), we applied nonlinear dynamics for feature extraction. Results indicated EOG-SA's capability to distinguish IDD, with higher template thresholds and Correlation Dimension values correlating with clinical severity. The template threshold proved a robust indicator, with higher values denoting severe IDD. Discriminative metrics showed areas under the curve of 0.91 (template threshold) and 0.85/0.91 (D2), with sensitivities and specificities of 77.6%/95.9% and 93.5%/71.0%, respectively. EOG-SA emerges as a promising tool, offering interpretable neural biomarkers for early and nuanced diagnosis of IDD.
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Affiliation(s)
- Shi-Yi Qi
- Department of Acupuncture and Tuina, Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian Province, China
| | - Si-Jia Zhang
- Department of Acupuncture and Tuina, Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian Province, China
- Tongxiang Hospital of Traditional Chinese Medicine, Tongxiang, Zhejiang Province, China
| | - Li-Li Lin
- Department of Acupuncture and Tuina, Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian Province, China
- Institute of Acupuncture and Meridian, Fujian Academy of Chinese Medical Sciences, Fuzhou, Fujian Province, China
| | - Yu-Rong Li
- Department of Electrical Engineering and Automation, Fuzhou University, Fuzhou, Fujian Province, China
| | - Jian-Guo Chen
- Department of Electrical Engineering and Automation, Fuzhou University, Fuzhou, Fujian Province, China
| | - You-Cong Ni
- School of Computer and Cyberspace Security, Fujian Normal University, Fuzhou, Fujian Province, China
| | - Xin Du
- School of Computer and Cyberspace Security, Fujian Normal University, Fuzhou, Fujian Province, China
| | - Jie Zhang
- Department of Rehabilitation, The Affiliated People's Hospital of Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian Province, China
| | - Pin Ge
- Fujian Maternity and Child Health Hospital, Fuzhou, Fujian Province, China
| | - Gui-Hua Liu
- Fujian Maternity and Child Health Hospital, Fuzhou, Fujian Province, China
| | - Jiang-Yun Wu
- Department of Rehabilitation, The Third People's Hospital Affiliated to Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian Province, China
- College of Rehabilitation Medicine, Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian Province, China
| | - Shen Lin
- Fujian Maternity and Child Health Hospital, Fuzhou, Fujian Province, China
| | - Meng Gong
- Department of Acupuncture and Tuina, Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian Province, China
| | - Jin-Wen Lin
- Department of Acupuncture and Tuina, Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian Province, China
| | - Lan-Fang Chen
- Department of Rehabilitation, The Third People's Hospital Affiliated to Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian Province, China
| | - Ling-Ling He
- Department of Acupuncture and Tuina, Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian Province, China
| | - Dong Lin
- Department of Acupuncture and Tuina, Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian Province, China.
- Department of Rehabilitation, The Third People's Hospital Affiliated to Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian Province, China.
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Niu X, Gao X, Wang T, Wang W, Liu H. Ordered Nanopillar Arrays of Low Dynamic Noise Dry Bioelectrodes for Electrocardiogram Surface Monitoring. ACS APPLIED MATERIALS & INTERFACES 2022; 14:33861-33870. [PMID: 35830904 DOI: 10.1021/acsami.2c08318] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Flexible bioelectric dry electrodes are an important part of long-term medical healthcare monitoring systems. In this study, a new method is proposed for the preparation of dry electrodes with micronanopillar arrays structured by designing dimensionally tunable anodized aluminum oxide (AAO) templates, by which polyaniline/thermoplastic polyurethane single-layer micronanopillar array structured dry electrodes (PANI/TPU-SE) and polyaniline/thermoplastic polyurethane double-layer micronanopillar array structured dry electrodes (PANI/TPU-DE) are prepared. Compared with the planar structure, the micronanopillar array structure can reduce the contact gap between the electrode and skin and increase the contact area, thus exhibiting lower contact impedance and higher signal quality. At 0.1 Hz, the impedances of the wet electrode, PANI/TPU-DE300, PANI/TPU-SE10, and planar structure electrodes are 269.5 kΩ, 375.5 kΩ, 398.1 kΩ, and 2.257 MΩ, respectively, and the impedance value for PANI/TPU-DE300 is smaller than that for PANI/TPU-SE10 and closer to that for the wet electrode. In addition, because the surface of the micronanostructure can conform to the human skin, about 210.7% increase in the peel strength of double-layer structure electrodes compared to flat structure electrodes, it shows a low baseline drift in the dynamic ECG measurement, and the signal-to-noise ratio in the walking state can reach 21.33 ± 5.4775 dB. Therefore, the prepared bioelectric dry electrode has a wide application prospect in the fields of wearable medical monitoring.
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Affiliation(s)
- Xin Niu
- School of Textile Science and Engineering, Institute of Smart Wearable Electronic Textiles, Tiangong University, Tianjin 300387, P. R. China
| | - Xinhua Gao
- School of Textile Science and Engineering, Institute of Smart Wearable Electronic Textiles, Tiangong University, Tianjin 300387, P. R. China
| | - Tanyu Wang
- School of Textile Science and Engineering, Institute of Smart Wearable Electronic Textiles, Tiangong University, Tianjin 300387, P. R. China
| | - Wei Wang
- School of Arts, Institute of Smart Wearable Electronic Textiles, Tiangong University, Tianjin 300387, P. R. China
| | - Hao Liu
- School of Textile Science and Engineering, Institute of Smart Wearable Electronic Textiles, Tiangong University, Tianjin 300387, P. R. China
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Gong S, Yap LW, Zhang Y, He J, Yin J, Marzbanrad F, Kaye DM, Cheng W. A gold nanowire-integrated soft wearable system for dynamic continuous non-invasive cardiac monitoring. Biosens Bioelectron 2022; 205:114072. [DOI: 10.1016/j.bios.2022.114072] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Revised: 01/19/2022] [Accepted: 02/02/2022] [Indexed: 12/15/2022]
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Lee JH, Heo JS, Kim YJ, Eom J, Jung HJ, Kim JW, Kim I, Park HH, Mo HS, Kim YH, Park SK. A Behavior-Learned Cross-Reactive Sensor Matrix for Intelligent Skin Perception. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e2000969. [PMID: 32310332 DOI: 10.1002/adma.202000969] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Revised: 03/12/2020] [Accepted: 03/23/2020] [Indexed: 05/07/2023]
Abstract
Mimicking human skin sensation such as spontaneous multimodal perception and identification/discrimination of intermixed stimuli is severely hindered by the difficulty of efficient integration of complex cutaneous receptor-emulating circuitry and the lack of an appropriate protocol to discern the intermixed signals. Here, a highly stretchable cross-reactive sensor matrix is demonstrated, which can detect, classify, and discriminate various intermixed tactile and thermal stimuli using a machine-learning approach. Particularly, the multimodal perception ability is achieved by utilizing a learning algorithm based on the bag-of-words (BoW) model, where, by learning and recognizing the stimulus-dependent 2D output image patterns, the discrimination of each stimulus in various multimodal stimuli environments is possible. In addition, the single sensor device integrated in the cross-reactive sensor matrix exhibits multimodal detection of strain, flexion, pressure, and temperature. It is hoped that his proof-of-concept device with machine-learning-based approach will provide a versatile route to simplify the electronic skin systems with reduced architecture complexity and adaptability to various environments beyond the limitation of conventional "lock and key" approaches.
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Affiliation(s)
- Jun Ho Lee
- School of Electrical and Electronics Engineering, Chung-Ang University, Seoul, 06980, Korea
| | - Jae Sang Heo
- School of Electrical and Electronics Engineering, Chung-Ang University, Seoul, 06980, Korea
- Department of Medicine, University of Connecticut School of Medicine, Farmington, CT, 06030, USA
| | - Yoon-Jeong Kim
- School of Electrical and Electronics Engineering, Chung-Ang University, Seoul, 06980, Korea
| | - Jimi Eom
- School of Advanced Materials Science and Engineering, Sungkyunkwan University, Suwon, 16419, Korea
| | - Hong Jun Jung
- School of Electrical Engineering, Kookmin University, Seoul, 02707, Korea
| | - Jong-Woong Kim
- School of Advanced Materials Engineering, Chonbuk National University, Deokjin-Dong, 664-14, Jeonju, 54896, Korea
| | - Insoo Kim
- Department of Medicine, University of Connecticut School of Medicine, Farmington, CT, 06030, USA
| | - Ho-Hyun Park
- School of Electrical and Electronics Engineering, Chung-Ang University, Seoul, 06980, Korea
| | - Hyun Sun Mo
- School of Electrical Engineering, Kookmin University, Seoul, 02707, Korea
| | - Yong-Hoon Kim
- School of Advanced Materials Science and Engineering, Sungkyunkwan University, Suwon, 16419, Korea
| | - Sung Kyu Park
- School of Electrical and Electronics Engineering, Chung-Ang University, Seoul, 06980, Korea
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Quinsaat JEQ, Burda I, Krämer R, Häfliger D, Nüesch FA, Dascalu M, Opris DM. Conductive silicone elastomers electrodes processable by screen printing. Sci Rep 2019; 9:13331. [PMID: 31527691 PMCID: PMC6746820 DOI: 10.1038/s41598-019-49939-8] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Accepted: 09/03/2019] [Indexed: 12/04/2022] Open
Abstract
Conductive inks consisting of graphene and carbon black conductive fillers into a polydimethylsiloxane (PDMS) matrix, which can be processed into thin films by screen printing are developed. The influence of filler composition and content on mechanical and electrical properties of the conductive composites is investigated. The best composites were evaluated as electrode material for dielectric elastomer actuators and for piezoelectric sensors. With increasing filler content, the electrical properties of the resulting composites of graphite nanoplates (GNPs) or a binary mixture of GNPs and carbon black (CB) with PDMS (Mw = 139 kg/mol) are enhanced. Hence, PDMS composites filled with GNPs (42 wt.%) or a binary mixture of GNPs/CB (300/150 ratio, 30 wt.% of total filler loading) exhibited constant contact resistance values of 0.5 and 5 Ω determined in life-cycle test, respectively, thus rendering them suitable as electrode materials for piezosensors. On the other hand, dielectric elastomer actuators require more flexible electrode materials, which could be tuned by varying the polymer molecular weight and by reducing the filler content. Therefore, a composite consisting of PDMS (Mw = 692 kg/mol) and a binary filler mixture of GNPs/CB (150/75 ratio, 18 wt.% of total filler loading) was used for producing the electrodes of dielectric elastomer transducers (DETs). The produced DETs with different electrode thicknesses were characterized in terms of their performance. The negligible hysteresis of the electrode materials is favorable for sensor and actuator applications.
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Affiliation(s)
- Jose Enrico Q Quinsaat
- Swiss Federal Laboratories for Materials Science and Technology Empa, Laboratory for Functional Polymers, Ueberlandstr. 129, CH-8600, Dübendorf, Switzerland.
| | - Iurii Burda
- Swiss Federal Laboratories for Materials Science and Technology Empa, Laboratory for Mechanical Systems Engineering, Ueberlandstr. 129, CH-8600, Dübendorf, Switzerland
| | - Ronny Krämer
- Sateco AG, Tumigerstr. 111, CH-8606, Naenikon-Uster, Switzerland
| | - Daniel Häfliger
- Sateco AG, Tumigerstr. 111, CH-8606, Naenikon-Uster, Switzerland
| | - Frank A Nüesch
- Swiss Federal Laboratories for Materials Science and Technology Empa, Laboratory for Functional Polymers, Ueberlandstr. 129, CH-8600, Dübendorf, Switzerland
- Ecole Polytechnique Fédérale de Lausanne (EPFL), Institut des Matériaux, Station 12, CH 1015, Lausanne, Switzerland
| | - Mihaela Dascalu
- Swiss Federal Laboratories for Materials Science and Technology Empa, Laboratory for Functional Polymers, Ueberlandstr. 129, CH-8600, Dübendorf, Switzerland
| | - Dorina M Opris
- Swiss Federal Laboratories for Materials Science and Technology Empa, Laboratory for Functional Polymers, Ueberlandstr. 129, CH-8600, Dübendorf, Switzerland.
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Seshadri DR, Li RT, Voos JE, Rowbottom JR, Alfes CM, Zorman CA, Drummond CK. Wearable sensors for monitoring the internal and external workload of the athlete. NPJ Digit Med 2019; 2:71. [PMID: 31372506 PMCID: PMC6662809 DOI: 10.1038/s41746-019-0149-2] [Citation(s) in RCA: 80] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2018] [Accepted: 07/08/2019] [Indexed: 11/29/2022] Open
Abstract
The convergence of semiconductor technology, physiology, and predictive health analytics from wearable devices has advanced its clinical and translational utility for sports. The detection and subsequent application of metrics pertinent to and indicative of the physical performance, physiological status, biochemical composition, and mental alertness of the athlete has been shown to reduce the risk of injuries and improve performance and has enabled the development of athlete-centered protocols and treatment plans by team physicians and trainers. Our discussions in this review include commercially available devices, as well as those described in scientific literature to provide an understanding of wearable sensors for sports medicine. The primary objective of this paper is to provide a comprehensive review of the applications of wearable technology for assessing the biomechanical and physiological parameters of the athlete. A secondary objective of this paper is to identify collaborative research opportunities among academic research groups, sports medicine health clinics, and sports team performance programs to further the utility of this technology to assist in the return-to-play for athletes across various sporting domains. A companion paper discusses the use of wearables to monitor the biochemical profile and mental acuity of the athlete.
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Affiliation(s)
- Dhruv R. Seshadri
- Department of Biomedical Engineering, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, OH 44106 USA
| | - Ryan T. Li
- Department of Orthopaedic Surgery, University Hospitals Cleveland Medical Center, Cleveland, OH 44106 USA
| | - James E. Voos
- University Hospitals Sports Medicine Institute, Cleveland, OH 44106 USA
| | - James R. Rowbottom
- Department of Cardiothoracic Anesthesiology, The Cleveland Clinic, 9500 Euclid Avenue, Cleveland, OH 44195 USA
| | - Celeste M. Alfes
- Frances Payne Bolton School of Nursing, Case Western Reserve University, 9501 Euclid Avenue, Cleveland, OH 44106 USA
| | - Christian A. Zorman
- Department of Electrical Engineering and Computer Science, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, OH 44106 USA
| | - Colin K. Drummond
- Department of Biomedical Engineering, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, OH 44106 USA
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Klonos P, Sulym IY, Sternik D, Konstantinou P, Goncharuk OV, Deryło–Marczewska A, Gun'ko VM, Kyritsis A, Pissis P. Morphology, crystallization and rigid amorphous fraction in PDMS adsorbed onto carbon nanotubes and graphite. POLYMER 2018. [DOI: 10.1016/j.polymer.2018.02.020] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Flexible Graphene Electrodes for Prolonged Dynamic ECG Monitoring. SENSORS 2016; 16:s16111833. [PMID: 27809270 PMCID: PMC5134492 DOI: 10.3390/s16111833] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/12/2016] [Revised: 10/15/2016] [Accepted: 10/28/2016] [Indexed: 11/16/2022]
Abstract
This paper describes the development of a graphene-based dry flexible electrocardiography (ECG) electrode and a portable wireless ECG measurement system. First, graphene films on polyethylene terephthalate (PET) substrates and graphene paper were used to construct the ECG electrode. Then, a graphene textile was synthesized for the fabrication of a wearable ECG monitoring system. The structure and the electrical properties of the graphene electrodes were evaluated using Raman spectroscopy, scanning electron microscopy (SEM), and alternating current impedance spectroscopy. ECG signals were then collected from healthy subjects using the developed graphene electrode and portable measurement system. The results show that the graphene electrode was able to acquire the typical characteristics and features of human ECG signals with a high signal-to-noise (SNR) ratio in different states of motion. A week-long continuous wearability test showed no degradation in the ECG signal quality over time. The graphene-based flexible electrode demonstrates comfortability, good biocompatibility, and high electrophysiological detection sensitivity. The graphene electrode also combines the potential for use in long-term wearable dynamic cardiac activity monitoring systems with convenience and comfort for use in home health care of elderly and high-risk adults.
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