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Kate Wilmut, Wenchong Du, Anna L Barnett
Passing through a narrow gap/aperture involves a perceptual judgement regarding the size of the gap and an action to pass through. Children with DCD are known to have difficulties with perceptual judgements in near space but whether this extends to far space is unknown. Furthermore, in a recent study it was found that adults with DCD do not scale movements when walking through an aperture in the same way as their peers. The current study, therefore, considered perceptual judgements and motor behaviour of children with DCD while looking at or walking through apertures...
October 16, 2016: Developmental Science
Jamie S Allsop, Tomas Vaitkus, Dannette Marie, Lynden K Miles
Whether it be a rugby team or a rescue crew, ensuring peak group performance is a primary goal during collective activities. In reality, however, groups often suffer from productivity losses that can lead to less than optimal outputs. Where researchers have focused on this problem, inefficiencies in the way team members coordinate their efforts has been identified as one potent source of productivity decrements. Here, we set out to explore whether performance on a simple object movement task is shaped by the spontaneous emergence of interpersonally coordinated behavior...
2016: Frontiers in Psychology
Omer Gvirsman, Gabor Kosa, Amir Ayali
Locusts are known for their ability to jump large distances to avoid predation. The jump also serves to launch the adult locust into the air in order to initiate flight. Various aspects of this important behavior have been studied extensively, from muscle physiology and biomechanics, to the energy storage systems involved in powering the jump, and more. Less well understood are the mechanisms participating in control of the jump trajectory. Here we utilise video monitoring and careful analysis of experimental directional jumps by adult desert locusts, together with dynamic computer simulation, in order to understand how the locusts control the direction and elevation of the jump, the residual angular velocities resulting from the jump and the timing of flapping-flight initiation...
2016: PeerJ
Linnéa Larsson, Andrea Schwaller, Marcus Nyström, Martin Stridh
BACKGROUND: The complexity of analyzing eye-tracking signals increases as eye-trackers become more mobile. The signals from a mobile eye-tracker are recorded in relation to the head coordinate system and when the head and body move, the recorded eye-tracking signal is influenced by these movements, which render the subsequent event detection difficult. NEW METHOD: The purpose of the present paper is to develop a method that performs robust event detection in signals recorded using a mobile eye-tracker...
September 28, 2016: Journal of Neuroscience Methods
Monica Baciu, Audrey Acher, Louise Kauffmann, Emilie Cousin, Claire Boilley, Thomas Hueber, Pierre Badin, Pascal Perrier, Diandra Fabre, Assia Jaillard, Olivier Detante, Dominique Perennou
OBJECTIVE: To assess the efficiency of Visual Feedback (VF) on language recovery and plasticity in three chronic non-fluent aphasic patients. VF is based on language-action interaction, thus, language skills are improved by rehabilitation strategies based on execution and observation of motor actions. VF is an ultrasound system coupled with video images, allowing patients to 'see their own lips and tongue at work' during speech and improve their awareness of their lingual and labial movements and their ability to coordinate and combine phonemes and syllables...
September 2016: Annals of Physical and Rehabilitation Medicine
Pascale Roger Dalbert, Marie-Charlotte d'Anjou
Compilio is a free and secure personal health record (PHR). It is an Internet based innovative tool for families and health professionals. Compilio aims to improve the coordination of the care course for people having specific needs related to a handicap or a chronic disease. Compilio is a project of the "Agence régionale de Santé Auvergne-Rhone-Alpes" and the NGO network R4P (Regional Network of Pediatric Re-education and Re-adaptation in Rhône-Alpes), developed with the participation of Civil hospices of Lyon and GCS SISRA...
September 2016: Annals of Physical and Rehabilitation Medicine
Evelyn Quinones, Zulma Jimenez, Itala Manosha Wickremasinghe
No abstract text is available yet for this article.
September 2016: PM & R: the Journal of Injury, Function, and Rehabilitation
Giovanni Barbera, Bo Liang, Lifeng Zhang, Charles R Gerfen, Eugenio Culurciello, Rong Chen, Yun Li, Da-Ting Lin
An influential striatal model postulates that neural activities in the striatal direct and indirect pathways promote and inhibit movement, respectively. Normal behavior requires coordinated activity in the direct pathway to facilitate intended locomotion and indirect pathway to inhibit unwanted locomotion. In this striatal model, neuronal population activity is assumed to encode locomotion relevant information. Here, we propose a novel encoding mechanism for the dorsal striatum. We identified spatially compact neural clusters in both the direct and indirect pathways...
October 5, 2016: Neuron
David E Cade, Ari S Friedlaender, John Calambokidis, Jeremy A Goldbogen
Rorqual whales exhibit an extreme lunge filter-feeding strategy characterized by acceleration to high speed and engulfment of a large volume of prey-laden water [1-4]. Although tagging studies have quantified the kinematics of lunge feeding, the timing of engulfment relative to body acceleration has been modeled conflictingly because it could never be directly measured [5-7]. The temporal coordination of these processes has a major impact on the hydrodynamics and energetics of this high-cost feeding strategy [5-9]...
October 10, 2016: Current Biology: CB
Guillermo Robles, José Manuel Fresno, Romano Giannetti
The design and optimization of protective equipment and devices such as exoskeletons and prosthetics have the potential to be enhanced by the ability of accurately measure the positions of the bones during movement. Existing technologies allow a quite precise measurement of motion-mainly by using coordinate video-cameras and skin-mounted markers-but fail in directly measuring the bone position. Alternative approaches, as fluoroscopy, are too invasive and not usable during extended lapses of time, either for cost or radiation exposure...
September 22, 2016: ISA Transactions
David A Gonzalez, Ewa Niechwiej-Szwedo
The contribution of binocular vision to the performance of reaching and grasping movements has been examined previously using single reach-to-grasp movements. However, most of our daily activities consist of more complex action sequences, which require precise temporal linking between the gaze behaviour and manual action phases. Many previous studies found a stereotypical hand-eye coordination pattern, such that the eyes move prior to the reach initiation. Moving the eyes to the target object provides information about its features and location, which can facilitate the predictive control of reaching and grasping...
September 26, 2016: Vision Research
Marie Cécile Fevre, Caroline Vincent, Julien Picard, Arnaud Vighetti, Claire Chapuis, Maxime Detavernier, Benoit Allenet, Jean François Payen, Jean Luc Bosson, Pierre Albaladejo
Ultrasound (US) guided needle positioning is safer than anatomical landmark techniques for central venous access. Hand-eye coordination and execution time depend on the professional's ability, previous training and personal skills. Needle Guidance Positioning Systems (GPS) may theoretically reduce execution time and facilitate needle positioning in specific targets, thus improving patient comfort and safety. Three groups of healthcare professionals (41 anaesthesiologists and intensivists, 41 residents in anaesthesiology and intensive care, 39 nurse anaesthetists) were included and required to perform 3 tasks (positioning the tip of a needle in three different targets in a silicon phantom) by using successively a conventional US-guided needle positioning and a needle GPS...
September 19, 2016: Anaesthesia, Critical Care & Pain Medicine
Jocelyn K Mara, Kevin G Thompson, Kate L Pumpa, Stuart Morgan
The aim of this study was to determine the high-speed running and sprinting profiles of elite female soccer players during competitive matches using a new Optical Player Tracking System. Eight stationary video cameras were positioned at vantage points surrounding the soccer field so that when each camera view was combined the entire field could be viewed simultaneously. Following each match, an optical player tracking system detected the coordinates (x,y) of each player for every video frame. Algorithms applied to the x and y coordinates were used to determine activity variables for twelve elite female players across seven competitive matches...
September 6, 2016: Journal of Strength and Conditioning Research
Sheldon L Reeves, Kelsey E Fleming, Lin Zhang, Annalisa Scimemi
Grooming is a complex and robust innate behavior, commonly performed by most vertebrate species. In mice, grooming consists of a series of stereotyped patterned strokes, performed along the rostro-caudal axis of the body. The frequency and duration of each grooming episode is sensitive to changes in stress levels, social interactions and pharmacological manipulations, and is therefore used in behavioral studies to gain insights into the function of brain regions that control movement execution and anxiety. Traditional approaches to analyze grooming rely on manually scoring the time of onset and duration of each grooming episode, and are often performed on grooming episodes triggered by stress exposure, which may not be entirely representative of spontaneous grooming in freely-behaving mice...
September 2016: PLoS Computational Biology
Tâm Minh Lê, Margot Brard, Sébastien Lê
Through this article, we aim to introduce Holos-a new collaborative environment that allows researchers to carry out experiments based on similarity assessments between stimuli, such as in projective-mapping and sorting tasks. An important feature of Holos is its capacity to assess real-time individual processes during the task. Within the Holos environment, researchers can design experiments on its platform, which can handle four kinds of stimuli: concepts, images, sounds, and videos. In addition, researchers can share their study resources within the scientific community, including stimuli, experimental protocols, and/or the data collected...
September 8, 2016: Behavior Research Methods
F Aigner, M Biebl, A Fürst, T Jöns, J Pratschke, W Kneist
BACKGROUND: In recent years the video endoscopy-assisted transanal approach to total mesorectal excision (TME) combined with the conventional laparoscopic technique was developed as an alternative indication for treatment of low rectal cancer (TaTME). OBJECTIVE: The concept and results of the first German TaTME hands-on cadaver course with subsequent live surgery are presented. MATERIAL AND METHODS: The 2‑day training course was structured into an anatomical and a clinical surgery part...
September 15, 2016: Der Chirurg; Zeitschrift Für Alle Gebiete der Operativen Medizen
Courtney R Lyles, Andrea Altschuler, Neetu Chawla, Christine Kowalski, Deanna McQuillan, Elizabeth Bayliss, Michele Heisler, Richard W Grant
BACKGROUND: Complex patients with multiple chronic conditions often face significant challenges communicating and coordinating with their primary care physicians. These challenges are exacerbated by the limited time allotted to primary care visits. OBJECTIVE: Our aim was to employ a user-centered design process to create a tablet tool for use by patients for visit discussion prioritization. METHODS: We employed user-centered design methods to create a tablet-based waiting room tool that enables complex patients to identify and set discussion topic priorities for their primary care visit...
2016: JMIR MHealth and UHealth
Katherine E Law, Caitlin G Jenewein, Samantha J Gannon, Shannon M DiMarco, Lakita J Maulson, Shlomi Laufer, Carla M Pugh
BACKGROUND: The study aim was to identify residents' coordination between dominant and nondominant hands while grasping for sutures in a laparoscopic ventral hernia repair procedure simulation. We hypothesize residents will rely on their dominant and nondominant hands unequally while grasping for suture. METHODS: Surgical residents had 15 min to complete the mesh securing and mesh tacking steps of a laparoscopic ventral hernia repair procedure. Procedure videos were coded for manual coordination events during the active suture grasping phase...
September 2016: Journal of Surgical Research
John Michael, Natalie Sebanz, Günther Knoblich
Previous research has shown that interpersonal coordination enhances pro-social attitudes and behavior. Here, we extend this research by investigating whether the degree of coordination observed in a joint action enhances the perception of individuals' commitment to the joint action. In four experiments, participants viewed videos of joint actions. In the low coordination condition, two agents made independent individual contributions to a joint action. In the high coordination condition, the individual contributions were tightly linked...
September 6, 2016: Cognition
Michele Biasutti, Eleonora Concina, David Wasley, Aaron Williamon
In ensemble performances, group members use particular bodily behaviors as a sort of "language" to supplement the lack of verbal communication. This article focuses on music regulators, which are defined as signs to other group members for coordinating performance. The following two music regulators are considered: body gestures for articulating attacks (a set of movements externally directed that are used to signal entrances in performance) and eye contact. These regulators are recurring observable behaviors that play an important role in non-verbal communication among ensemble members...
2016: Frontiers in Psychology
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