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https://www.readbyqxmd.com/read/28548462/neurocognitive-mechanisms-of-real-world-autobiographical-memory-retrieval-insights-from-studies-using-wearable-camera-technology
#1
REVIEW
Tiffany E Chow, Jesse Rissman
In recent years, investigation into the cognitive and neural mechanisms of autobiographical memory has been aided by the use of experimental paradigms incorporating wearable camera technology. By effortlessly capturing first-person images of one's life events, these cameras provide a rich set of naturalistic stimuli that can later be used to trigger the recall of specific episodes. Here, we chronicle the development and progression of such studies in behavioral and neuroimaging examinations of both clinical and nonclinical adult populations...
May 2017: Annals of the New York Academy of Sciences
https://www.readbyqxmd.com/read/28547895/review-of-flexible-temperature-sensing-networks-for-wearable-physiological-monitoring
#2
REVIEW
Qiao Li, Li-Na Zhang, Xiao-Ming Tao, Xin Ding
Physiological temperature varies temporally and spatially. Accurate and real-time detection of localized temperature changes in biological tissues regardless of large deformation is crucial to understand thermal principle of homeostasis, to assess sophisticated health conditions, and further to offer possibilities of building a smart healthcare and medical system. Additionally, continuous temperature mapping in flexible and stretchable formats opens up many other potential areas, such as artificially electronic skins and reflection of emotional changes...
May 26, 2017: Advanced Healthcare Materials
https://www.readbyqxmd.com/read/28547847/stretchable-platinum-network-based-transparent-electrodes-for-highly-sensitive-wearable-electronics
#3
Yuting Wang, Jing Cheng, Yan Xing, Muhammad Shahid, Hiroki Nishijima, Wei Pan
A platinum network-based transparent electrode has been fabricated by electrospinning. The unique nanobelt structured electrode demonstrates low sheet resistance (about 16 Ω sq(-1) ) and high transparency of 80% and excellent flexibility. One of the most interesting demonstrations of this Pt nanobelt electrode is its excellent reversibly resilient characteristic. The electric conductivity of the flexible Pt electrode can recover to its initial value after 160% extending and this performance is repeatable and stable...
May 26, 2017: Small
https://www.readbyqxmd.com/read/28545824/classification-of-deadlift-biomechanics-with-wearable-inertial-measurement-units
#4
Martin A O'Reilly, Darragh F Whelan, Tomas E Ward, Eamonn Delahunt, Brian M Caulfield
The deadlift is a compound full-body exercise that is fundamental in resistance training, rehabilitation programs and powerlifting competitions. Accurate quantification of deadlift biomechanics is important to reduce the risk of injury and ensure training and rehabilitation goals are achieved. This study sought to develop and evaluate deadlift exercise technique classification systems utilising Inertial Measurement Units (IMUs), recording at 51.2Hz, worn on the lumbar spine, both thighs and both shanks. It also sought to compare classification quality when these IMUs are worn in combination and in isolation...
May 16, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/28545575/impaired-chronotropic-response-to-physical-activities-in-heart-failure-patients
#5
Hong Shen, Jianrong Zhao, Xiaohong Zhou, Jingbo Li, Qing Wan, Jing Huang, Hui Li, Liqun Wu, Shungang Yang, Ping Wang
BACKGROUND: While exercise-based cardiac rehabilitation has a beneficial effect on heart failure hospitalization and mortality, it is limited by the presence of chronotropic incompetence (CI) in some patients. This study explored the feasibility of using wearable devices to assess impaired chronotropic response in heart failure patients. METHODS: Forty patients with heart failure (left ventricular ejection fraction, LVEF: 44.6 ± 5.8; age: 54.4 ± 11.7) received ECG Holter and accelerometer to monitor heart rate (HR) and physical activities during symptom-limited treadmill exercise testing, 6-min hall walk (6MHW), and 24-h daily living...
May 25, 2017: BMC Cardiovascular Disorders
https://www.readbyqxmd.com/read/28544754/heterogeneous-integration-of-carbon-nanotube-graphene-for-high-performance-flexible-and-transparent-photodetectors
#6
Soonjae Pyo, Wondo Kim, Han-Il Jung, Jungwook Choi, Jongbaeg Kim
Low-dimensional carbon materials, such as semiconducting carbon nanotubes (CNTs), conducting graphene, and their hybrids, are of great interest as promising candidates for flexible, foldable, and transparent electronics. However, the development of highly photoresponsive, flexible, and transparent optoelectronics still remains limited due to their low absorbance and fast recombination rate of photoexcited charges, despite the considerable potential of photodetectors for future wearable and foldable devices...
May 24, 2017: Small
https://www.readbyqxmd.com/read/28544454/flexible-nanowire-cluster-as-a-wearable-colorimetric-humidity-sensor
#7
Zhiqiang Wei, Zhang-Kai Zhou, Qiuyu Li, Jiancai Xue, Andrea Di Falco, Zhongjian Yang, Jianhua Zhou, Xuehua Wang
Wearable plasmonic devices combine the advantages of high flexibility, ultrathinness, light weight, and excellent integration with the optical benefits mediated by plasmon-enhanced electric fields. However, two obstacles severely hinder further developments and applications of a wearable plasmonic device. One is the lack of efficient approach to obtaining devices with robust antimotion-interference property, i.e., the devices can work independently on the morphology changes of their working structures caused by arbitrary wearing conditions...
May 22, 2017: Small
https://www.readbyqxmd.com/read/28541907/compact-highly-efficient-and-fully-flexible-circularly-polarized-antenna-enabled-by-silver-nanowires-for-wireless-body-area-networks
#8
Zhi Hao Jiang, Zheng Cui, Taiwei Yue, Yong Zhu, Douglas H Werner
A compact and flexible circularly polarized (CP) wearable antenna is introduced for wireless body-area network systems at the 2.4 GHz industrial, scientific, and medical (ISM) band, which is implemented by employing a low-loss composite of polydimethylsiloxane (PDMS) and silver nanowires (AgNWs). The circularly polarized radiation is enabled by placing a planar linearly polarized loop monopole above a finite anisotropic artificial ground plane. By truncating the anisotropic artificial ground plane to contain only 2 by 2 unit cells, an integrated antenna with a compact form factor of 0...
May 23, 2017: IEEE Transactions on Biomedical Circuits and Systems
https://www.readbyqxmd.com/read/28541890/event-triggered-model-predictive-control-for-embedded-artificial-pancreas-systems
#9
Ankush Chakrabarty, Stamatina Zavitsanou, Francis Doyle Iii, Eyal Dassau
OBJECTIVE: The development of artificial pancreas (AP) technology for deployment in low-energy, embedded devices is contingent upon selecting an efficient control algorithm for regulating glucose in people with type 1 diabetes mellitus (T1DM). In this paper, we aim to lower the energy consumption of the AP by reducing controller updates, that is, the number of times the decision-making algorithm is invoked to compute an appropriate insulin dose. METHODS: Physiological insights into glucose management are leveraged to design an event-triggered model predictive controller (MPC) that operates efficiently, without compromising patient safety...
May 23, 2017: IEEE Transactions on Bio-medical Engineering
https://www.readbyqxmd.com/read/28541813/video-analysis-verification-of-head-impact-events-measured-by-wearable-sensors
#10
Nelson Cortes, Andrew E Lincoln, Gregory D Myer, Lisa Hepburn, Michael Higgins, Margot Putukian, Shane V Caswell
BACKGROUND: Wearable sensors are increasingly used to quantify the frequency and magnitude of head impact events in multiple sports. There is a paucity of evidence that verifies head impact events recorded by wearable sensors. PURPOSE: To utilize video analysis to verify head impact events recorded by wearable sensors and describe the respective frequency and magnitude. STUDY DESIGN: Cohort study (diagnosis); Level of evidence, 2. METHODS: Thirty male (mean age, 16...
May 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28541225/stability-of-enzymatic-biosensors-for-wearable-applications
#11
Apurva Sonawane, Pandiaraj Manickam, Shekhar Bhansali
Technological evolution in wearable sensors is accounting for major growth and transformation in multitude of industries ranging from healthcare to computing & informatics to communication and biomedical sciences. The major driver for this transformation is the new-found ability to continuously monitor and analyze the patients' physiology in patients' natural setting. Numerous wearable sensors are already on the market and are summarized. Most of the current technologies have focused on electro-physiological, electro-mechanical or acoustic measurements...
May 19, 2017: IEEE Reviews in Biomedical Engineering
https://www.readbyqxmd.com/read/28540957/a-skin-integrated-transparent-and-stretchable-strain-sensor-with-interactive-color-changing-electrochromic-displays
#12
Heun Park, Dong Sik Kim, Soo Yeong Hong, Chulmin Kim, Jun Yeong Yun, Seung Yun Oh, Sang Woo Jin, Yu Ra Jeong, Gyu Tae Kim, Jeong Sook Ha
In this study, we report on the development of a stretchable, transparent, and skin-attachable strain sensor integrated with a flexible electrochromic device as a human skin-inspired interactive color-changing system. The strain sensor consists of a spin-coated conductive nanocomposite film of poly(vinyl alcohol)/multi-walled carbon nanotube/poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) on a polydimethylsiloxane substrate. The sensor exhibits excellent performance of high sensitivity, high durability, fast response, and high transparency...
May 25, 2017: Nanoscale
https://www.readbyqxmd.com/read/28540448/sensor-based-balance-measures-outperform-modified-balance-error-scoring-system-in-identifying-acute-concussion
#13
Laurie A King, Martina Mancini, Peter C Fino, James Chesnutt, Clayton W Swanson, Sheila Markwardt, Julie C Chapman
Balance assessment is an integral component of concussion evaluation and management. Although the modified balance error scoring system (mBESS) is the conventional clinical tool, objective metrics derived from wearable inertial sensors during the mBESS may increase sensitivity in detecting subtle balance deficits post-concussion. The aim of this study was to identify which stance condition and postural sway metrics obtained from an inertial sensor placed on the lumbar spine during the mBESS best discriminate athletes with acute concussion...
May 24, 2017: Annals of Biomedical Engineering
https://www.readbyqxmd.com/read/28540402/a-qualitative-evaluation-of-breast-cancer-survivors-acceptance-of-and-preferences-for-consumer-wearable-technology-activity-trackers
#14
Nga H Nguyen, Nyssa T Hadgraft, Melissa M Moore, Dori E Rosenberg, Chris Lynch, Marina M Reeves, Brigid M Lynch
BACKGROUND: Physical inactivity and sedentary behaviour are common amongst breast cancer survivors. These behaviours are associated with an increased risk of comorbidities such as heart disease, diabetes and other cancers. Commercially available, wearable activity trackers (WATs) have potential utility as behavioural interventions to increase physical activity and reduce sedentary behaviour within this population. PURPOSE: The purpose of the study is to explore the acceptability and usability of consumer WAT amongst postmenopausal breast cancer survivors...
May 24, 2017: Supportive Care in Cancer: Official Journal of the Multinational Association of Supportive Care in Cancer
https://www.readbyqxmd.com/read/28539173/wearables-for-independent-living-in-older-adults-gait-and-falls
#15
REVIEW
A Godfrey
Solutions are needed to satisfy care demands of older adults to live independently. Wearable technology (wearables) is one approach that offers a viable means for ubiquitous, sustainable and scalable monitoring of the health of older adults in habitual free-living environments. Gait has been presented as a relevant (bio)marker in ageing and pathological studies, with objective assessment achievable by inertial-based wearables. Commercial wearables have struggled to provide accurate analytics and have been limited by non-clinically oriented gait outcomes...
June 2017: Maturitas
https://www.readbyqxmd.com/read/28539149/mobility-and-agility-during-locomotion-in-the-mark-iii-space-suit
#16
Conor R Cullinane, Richard A Rhodes, Leia A Stirling
INTRODUCTION: The Mark III (MIII) space suit assembly (SSAs) implements a multibearing, hard-material hip brief assembly (HBA). We hypothesize that: 1) the MIII HBA restricts operator mobility and agility which manifests in effects to gait parameters; 2) the waist bearing provides rotational motion, partially alleviating the restrictions; and 3) there are resistive, speed-dependent torques associated with the spinning bearings which further diminish mobility and agility. METHODS: A subject (Suited and Unsuited) performed two planetary tasks-walking forward (WF) and backward (WB)...
June 1, 2017: Aerospace Medicine and Human Performance
https://www.readbyqxmd.com/read/28538708/accuracy-in-wrist-worn-sensor-based-measurements-of-heart-rate-and-energy-expenditure-in-a-diverse-cohort
#17
Anna Shcherbina, C Mikael Mattsson, Daryl Waggott, Heidi Salisbury, Jeffrey W Christle, Trevor Hastie, Matthew T Wheeler, Euan A Ashley
The ability to measure physical activity through wrist-worn devices provides an opportunity for cardiovascular medicine. However, the accuracy of commercial devices is largely unknown. The aim of this work is to assess the accuracy of seven commercially available wrist-worn devices in estimating heart rate (HR) and energy expenditure (EE) and to propose a wearable sensor evaluation framework. We evaluated the Apple Watch, Basis Peak, Fitbit Surge, Microsoft Band, Mio Alpha 2, PulseOn, and Samsung Gear S2. Participants wore devices while being simultaneously assessed with continuous telemetry and indirect calorimetry while sitting, walking, running, and cycling...
May 24, 2017: Journal of Personalized Medicine
https://www.readbyqxmd.com/read/28538326/technology-in-strength-and-conditioning-tracking-lower-limb-exercises-with-wearable-sensors
#18
Martin A OʼReilly, Darragh F Whelan, Tomas E Ward, Eamonn Delahunt, Brian Caulfield
O'Reilly, MA, Whelan, DF, Ward, TE, Delahunt, E, and Caulfield, B. Technology in strength and conditioning tracking lower-limb exercises with wearable sensors. J Strength Cond Res 31(6): 1726-1736, 2017-Strength and conditioning (S&C) coaches offer expert guidance to help those they work with achieve their personal fitness goals. However, because of cost and availability issues, individuals are often left training without expert supervision. Recent developments in inertial measurement units (IMUs) and mobile computing platforms have allowed for the possibility of unobtrusive motion tracking systems and the provision of real-time individualized feedback regarding exercise performance...
June 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28537626/highly-transparent-supercapacitors-based-on-zno-mno2-nanostructures
#19
M A Borysiewicz, M Ekielski, Z Ogorzałek, M Wzorek, J Kaczmarski, T Wojciechowski
The recent rapid development of transparent electronics, notably displays and control circuits, requires the development of highly transparent energy storage devices, such as supercapacitors. The devices reported to date utilize carbon-based electrodes for high performance, however at the cost of their low transparency around 50%, insufficient for real transparent devices. To overcome this obstacle, in this communication highly transparent supercapacitors were fabricated based on ZnO/MnO2 nanostructured electrodes...
May 24, 2017: Nanoscale
https://www.readbyqxmd.com/read/28537375/flexible-and-wearable-fiber-micro-supercapacitors-based-on-carbon-nanotube-agarose-gel-composite-electrodes
#20
Sung Kon Kim, Hyung-Jun Koo, Jinyun Liu, Paul V Braun
Fiber electrodes provide interesting opportunities for energy storage by providing both mechanical flexibility and the opportunity to impart multifunctionality to fabrics. We show here carbon nanotube (CNTs)-embedded agarose gel composite fiber electrodes with a diameter of ~120 μm consisting of 60 wt% CNTs that can serve as the basis for flexible and wearable fiber micro-supercapacitors (mSCs). Via an extrusion process, CNT bundles are induced to align in an agarose filament matrix. Due to the shear alignment of the CNT bundles, the dehydrated filaments have an electrical conductivity as high as 8...
May 24, 2017: ACS Applied Materials & Interfaces
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