Read by QxMD icon Read

"Motion sensors"

Dustin A Heldman, Denzil A Harris, Timothy Felong, Kelly L Andrzejewski, E Ray Dorsey, Joseph P Giuffrida, Barry Goldberg, Michelle A Burack
Background: Parkinson's disease (PD) motor symptoms can fluctuate and may not be accurately reflected during a clinical evaluation. In addition, access to movement disorder specialists is limited for many with PD. The objective was to assess the impact of motion sensor-based telehealth diagnostics on PD clinical care and management. Methods: Eighteen adults with PD were randomized to control or experimental groups. All participants were instructed to use a motion sensor-based monitoring system at home one day per week, for seven months...
September 2017: Digital Biomarkers
Nan Zeng, Xingyuan Gao, Yuanlong Liu, Jung Eun Lee, Zan Gao
OBJECTIVES: This study examined the reliability of two objective measurement tools in assessing children’s physical activity (PA) levels in an exergaming setting. METHODS: A total of 377 children (190 girls, Mage = 8.39, SD = 1.55) attended the 30-min exergaming class every other day for 18 weeks. Children’s PA levels were concurrently measured by NL-1000 pedometer and ActiGraph GT3X accelerometer, while children’s steps per min and time engaged in sedentary, light, and moderate-to-vigorous PA were estimated, respectively...
May 2, 2018: Journal of Clinical Medicine
Hyunwoo Lee, Mincheol Whang
Cardiac activity has been monitored continuously in daily life by virtue of advanced medical instruments with microelectromechanical system (MEMS) technology. Seismocardiography (SCG) has been considered to be free from the burden of measurement for cardiac activity, but it has been limited in its application in daily life. The most important issues regarding SCG are to overcome the limitations of motion artifacts due to the sensitivity of motion sensor. Although novel adaptive filters for noise cancellation have been developed, they depend on the researcher’s subjective decision...
May 1, 2018: Sensors
Philipp Del Hougne, Mohammadreza F Imani, Timothy Sleasman, Jonah N Gollub, Mathias Fink, Geoffroy Lerosey, David R Smith
Detecting and analysing motion is a key feature of Smart Homes and the connected sensor vision they embrace. At present, most motion sensors operate in line-of-sight Doppler shift schemes. Here, we propose an alternative approach suitable for indoor environments, which effectively constitute disordered cavities for radio frequency (RF) waves; we exploit the fundamental sensitivity of modes of such cavities to perturbations, caused here by moving objects. We establish experimentally three key features of our proposed system: (i) ability to capture the temporal variations of motion and discern information such as periodicity ("smart"), (ii) non line-of-sight motion detection, and (iii) single-frequency operation...
April 25, 2018: Scientific Reports
Karina Lebel, Vanessa Chenel, John Boulay, Patrick Boissy
Patients with suspected spinal cord injuries undergo numerous transfers throughout treatment and care. Effective c-spine stabilization is crucial to minimize the impacts of the suspected injury. Healthcare professionals are trained to perform those transfers using simulation; however, the feedback on the manoeuvre is subjective. This paper proposes a quantitative approach to measure the efficacy of the c-spine stabilization and provide objective feedback during training. Methods . 3D wearable motion sensors are positioned on a simulated patient to capture the motion of the head and trunk during a training scenario...
2018: Journal of Healthcare Engineering
Elisângela Valevein Rodrigues, Luiza Herminia Gallo, Ana Tereza Bittencourt Guimarães, Jarbas Melo Filho, Bruna Cavon Luna, Anna Raquel Silveira Gomes
The aim of this study was to evaluate the effects of a pop dance exergaming protocol on fall risk factors-depressive symptoms, fear of falling and musculoskeletal function-in community-dwelling, older female fallers and non-fallers. There were 47 community-dwelling older women assigned to the Intervention Group [fallers (n=10, 69.8 ± 4.3 years); non-fallers (n = 12, 68.9 ± 3.3 years)] or the Control Group [fallers (n = 12, 73.6 ± 5.4 years); non-fallers (n = 13, 68.7 ± 4.8 years)]. The Control Group maintained their lifestyle and the Intervention Group performed a videogame dance training three times per week for 12 weeks...
April 19, 2018: Rejuvenation Research
Jae Kyu Suhr, Ho Gi Jung
An automatic parking system is an essential part of autonomous driving, and it starts by recognizing vacant parking spaces. This paper proposes a method that can recognize various types of parking slot markings in a variety of lighting conditions including daytime, nighttime, and underground. The proposed method can readily be commercialized since it uses only those sensors already mounted on off-the-shelf vehicles: an around-view monitor (AVM) system, ultrasonic sensors, and in-vehicle motion sensors. This method first detects separating lines by extracting parallel line pairs from AVM images...
April 16, 2018: Sensors
Jiaying Du, Christer Gerdtman, Maria Lindén
Motion sensors such as MEMS gyroscopes and accelerometers are characterized by a small size, light weight, high sensitivity, and low cost. They are used in an increasing number of applications. However, they are easily influenced by environmental effects such as temperature change, shock, and vibration. Thus, signal processing is essential for minimizing errors and improving signal quality and system stability. The aim of this work is to investigate and present a systematic review of different signal error reduction algorithms that are used for MEMS gyroscope-based motion analysis systems for human motion analysis or have the potential to be used in this area...
April 6, 2018: Sensors
Yifan Yang, Wenyan Jia, Tamara Bucher, Hong Zhang, Mingui Sun
OBJECTIVE: Current approaches to food volume estimation require the person to carry a fiducial marker (e.g. a checkerboard card), to be placed next to the food before taking a picture. This procedure is inconvenient and post-processing of the food picture is time-consuming and sometimes inaccurate. These problems keep people from using the smartphone for self-administered dietary assessment. The current bioengineering study presents a novel smartphone-based imaging approach to table-side estimation of food volume which overcomes current limitations...
April 6, 2018: Public Health Nutrition
Jacob A Garlant, Kaitlyn R Ammann, Marvin J Slepian
Digital tracking of human motion offers the potential to monitor a wide range of activities detecting normal versus abnormal performance of tasks. We examined the ability of a wearable, conformal sensor system, fabricated from stretchable electronics with contained accelerometers and gyroscopes, to specifically detect, monitor, and define motion signals and "signatures," associated with tasks of daily living activities. The sensor system was affixed to the dominant hand of healthy volunteers (n = 4) who then completed four tasks...
March 28, 2018: ASAIO Journal: a Peer-reviewed Journal of the American Society for Artificial Internal Organs
Shinichi Furuya, Yuta Furukawa, Kazumasa Uehara, Takanori Oku
An integration of afferent sensory information from the visual, auditory, and proprioceptive systems into execution and update of motor programs plays crucial roles in control and acquisition of skillful sequential movements in musical performance. However, conventional behavioral and neurophysiological techniques that have been applied to study simplistic motor behaviors limit elucidating online sensorimotor integration processes underlying skillful musical performance. Here, we propose two novel techniques that were developed to investigate the roles of auditory and proprioceptive feedback in piano performance...
March 10, 2018: Annals of the New York Academy of Sciences
Aitziber Mancisidor, Asier Zubizarreta, Itziar Cabanes, Eva Portillo, Je Hyung Jung
In order to properly control rehabilitation robotic devices, the measurement of interaction force and motion between patient and robot is an essential part. Usually, however, this is a complex task that requires the use of accurate sensors which increase the cost and the complexity of the robotic device. In this work, we address the development of virtual sensors that can be used as an alternative of actual force and motion sensors for the Universal Haptic Pantograph (UHP) rehabilitation robot for upper limbs training...
March 5, 2018: Sensors
Danthanh Hoang, Nayaab Khawar, Maria George, Ashraf Gad, Farrah Sy, Pramod Narula
OBJECTIVE: To increase the hand-washing (HW) duration of staff and visitors in the NICU to a minimum of 20 seconds as recommended by the CDC. METHODS: Intervention included video didactic triggered by motion sensor to play above wash basin. Video enacted Centers for Disease Control and Prevention (CDC) HW technique in real time and displayed timer of 20 seconds. HW was reviewed from surveillance video. Swabs of hands plated and observed for qualitative growth (QG) of bacterial colonies...
April 2018: Journal of Healthcare Risk Management: the Journal of the American Society for Healthcare Risk Management
Shota Yamada, Takashi Kakue, Tomoyoshi Shimobaba, Tomoyoshi Ito
In this paper, we demonstrate an interactive, finger-sensitive system which enables an observer to intuitively handle electro-holographic images in real time. In this system, a motion sensor detects finger gestures (swiping and pinching) and translates them into the rotation and enlargement/reduction of the holographic image, respectively. By parallelising the hologram calculation using a graphics processing unit, we realised the interactive handling of the holographic image in real time. In a demonstration of the system, we used a Leap Motion sensor and a phase modulation-type spatial light modulator with 1,920 × 1,080 pixels and a pixel pitch of 8...
January 31, 2018: Scientific Reports
Brad Manor, Wanting Yu, Hao Zhu, Rachel Harrison, On-Yee Lo, Lewis Lipsitz, Thomas Travison, Alvaro Pascual-Leone, Junhong Zhou
BACKGROUND: Walking is a complex cognitive motor task that is commonly completed while performing another task such as talking or making decisions. Gait assessments performed under normal and "dual-task" walking conditions thus provide important insights into health. Such assessments, however, are limited primarily to laboratory-based settings. OBJECTIVE: The objective of our study was to create and test a smartphone-based assessment of normal and dual-task walking for use in nonlaboratory settings...
January 30, 2018: JMIR MHealth and UHealth
Andrew L Skinner, Christopher J Stone, Hazel Doughty, Marcus R Munafò
Introduction: Recent developments in smoking cessation support systems and interventions have highlighted the requirement for unobtrusive, passive ways to measure smoking behaviour. A number of systems have been developed for this that either use bespoke sensing technology, or expensive combinations of wearables and smartphones. Here we present StopWatch, a system for passive detection of cigarette smoking that runs on a low-cost smartwatch and does not require additional sensing or a connected smartphone...
January 24, 2018: Nicotine & Tobacco Research: Official Journal of the Society for Research on Nicotine and Tobacco
(no author information available yet)
No abstract text is available yet for this article.
December 2017: Computers, Informatics, Nursing: CIN
Xiaoyong Zhang, Bensheng Qiu, Zijun Wei, Fei Yan, Caiyun Shi, Shi Su, Xin Liu, Jim X Ji, Guoxi Xie
PURPOSE: To develop and assess a three-dimensional (3D) self-gated technique for the evaluation of myocardial infarction (MI) in mouse model without the use of external electrocardiogram (ECG) trigger and respiratory motion sensor on a 3T clinical MR system. METHODS: A 3D T1-weighted GRE sequence with stack-of-stars sampling trajectories was developed and performed on six mice with MIs that were injected with a gadolinium-based contrast agent at a 3T clinical MR system...
2017: PloS One
Robert A Pedowitz
Wearable inertial sensors can be used for assessment of surgeon body motion during arthroscopy, with demonstrated macroergonomic differences observed between novices and experts during diagnostic arthroscopy of a right cadaver knee. Before the adoption of arthroscopy training benchmarks based on inertial sensor technology, validation research should cross-correlate ergonomic variables with surgical quality.
December 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
Bing-Chang Zhang, Hui Wang, Le He, Cai-Jun Zheng, Jian-Sheng Jie, Yeshayahu Lifshitz, Shuit-Tong Lee, Xiao-Hong Zhang
The elongation of free-standing one-dimensional (1D) functional nanostructures into lengths above the millimeter range has brought new practical applications as they combine the remarkable properties of nanostructured materials with macroscopic lengths. However, it remains a big challenge to prepare 1D silicon nanostructures, one of the most important 1D nanostructures, with lengths above the millimeter range. Here we report the unprecedented preparation of ultralong single-crystalline Si nanowires with length up to 2 cm, which can function as the smallest active material to facilitate the miniaturization of macroscopic devices...
December 13, 2017: Nano Letters
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"