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https://www.readbyqxmd.com/read/28315945/organization-of-the-reach-and-grasp-in-head-fixed-vs-freely-moving-mice-provides-support-for-multiple-motor-channel-theory-of-neocortical-organization
#1
Ian Q Whishaw, Jamshid Faraji, Jessica Kuntz, Behroo Mirza Agha, Mukt Patel, Gerlinde A S Metz, Majid H Mohajerani
Multiple motor channel (MMC) theory of neocortical organization proposes that complex movements, such as reaching for a food item to eat, are produced by the coordinated action of separate neural channels. For example, the human reach-to-grasp act is mediated by two visuo-parieto-motor cortex channels, one for the reach and one for the grasp. The present analysis asked whether there is a similar organization of reach-and-grasp movements in the mouse. The reach-to-eat movements of the same mice were examined from high-shutter speed, frame-by-frame video analysis in three tasks in which the mice obtained equivalent success scores: when freely-moving reaching for food pellets, when head-fixed reaching for food pellets, and when head-fixed reaching for pieces of pasta...
March 18, 2017: Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale
https://www.readbyqxmd.com/read/28282530/effect-of-early-intervention-on-functional-outcome-at-school-age-follow-up-and-process-evaluation-of-a-randomised-controlled-trial-in-infants-at-risk
#2
Elisa G Hamer, Tjitske Hielkema, Arend F Bos, Tineke Dirks, Siebrigje J Hooijsma, Heleen A Reinders-Messelink, Rivka F Toonen, Mijna Hadders-Algra
BACKGROUND: The long-term effect of early intervention in infants at risk for developmental disorders is unclear. The VIP project (n=46, originally) evaluated by means of a randomised controlled trial the effect of the family centred early intervention programme COPCA (Coping with and Caring for infants with special needs) in comparison to that of traditional infant physiotherapy (TIP). AIMS: To evaluate the effect of early intervention on functional outcome at school age...
March 1, 2017: Early Human Development
https://www.readbyqxmd.com/read/28279851/the-sensitivity-of-shoulder-muscle-and-joint-force-predictions-to-changes-in-joint-kinematics-a-monte-carlo-analysis
#3
Wen Wu, Peter Vee Sin Lee, David C Ackland
Kinematics of the shoulder girdle obtained from non-invasive measurement systems such as video motion analysis, accelerometers and magnetic tracking sensors has been shown to be adversely affected by instrumentation measurement errors and skin motion artefact. The degree to which musculoskeletal model calculations of shoulder muscle and joint loading are influenced by variations in joint kinematics is currently not well understood. A three-dimensional musculoskeletal model of the upper limb was used to evaluate the sensitivity of shoulder muscle and joint force...
March 1, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28275083/unilateral-cerebellothalamic-tract-ablation-in-essential-tremor-by-mri-guided-focused-ultrasound
#4
Sebastian R Schreglmann, Ronald Bauer, Stefan Hägele-Link, Kailash P Bhatia, Parashkev Natchev, Nikolas Wegener, Anita Lebeda, Beat Werner, Ernst Martin, Georg Kägi
OBJECTIVE: To report results of a prospective trial of unilateral transcranial MRI-guided focused ultrasound (MRIgFUS) ablation of the cerebellothalamic tract in essential tremor (ET). METHODS: This was a prospective, uncontrolled, single-center interventional study. Patients with ET fulfilling criteria for interventional therapy received unilateral ablation of the cerebellothalamic tract (CTT) by MRIgFUS. Motor symptoms, manual dexterity, cognition, and quality of life were assessed before intervention and at 48 hours and 1, 3, and 6 months after intervention...
March 8, 2017: Neurology
https://www.readbyqxmd.com/read/28275005/kinematic-control-of-extreme-jump-angles-in-the-red-leg-running-frog-kassina-maculata
#5
Christopher Thomas Richards, Laura Beatriz Porro, Amber Jade Collings
The kinematic flexibility of frog hindlimbs enables multiple locomotor modes within a single species. Prior work has extensively explored maximum performance capacity in frogs; however, the mechanisms by which anurans modulate performance within locomotor modes remain unclear. We explored how Kassina maculata, a species known for both running and jumping abilities, modulates takeoff angle from horizontal to nearly vertical. Specifically, how do 3D motions of leg segments coordinate to move the center of mass (COM) upwards and forwards? How do joint rotations modulate jump angle? High-speed video was used to quantify 3D joint angles and their respective rotation axis vectors...
March 8, 2017: Journal of Experimental Biology
https://www.readbyqxmd.com/read/28250800/vocal-exchanges-during-pair-formation-and-maintenance-in-the-zebra-finch-taeniopygia-guttata
#6
Pietro Bruno D'Amelio, Lisa Trost, Andries Ter Maat
BACKGROUND: Pair compatibility affects the success of a pair; however, its causes and mechanisms are not fully understood. Vocal exchange may be very important for pair formation, coordinating pair activities, maintaining the pair bond and mate guarding. To investigate the role of vocal exchange in pair formation and pair maintenance, we explored whether new and established pairs of zebra finches differed in their calling relationships. We used individualised backpack microphones to examine the entire daily vocal emission of pairs, with parallel video recording of behaviour...
2017: Frontiers in Zoology
https://www.readbyqxmd.com/read/28238392/quantitative-representation-of-eustachian-tube-component-movements-during-swallowing
#7
Selma Cetin, Miriam S Teixeira, Cuneyt M Alper
OBJECTIVE: Describes a method of dynamic video-endoscopy of the Eustachian tube (ET) orifice at the nasopharynx to quantitatively represent ET component movements during swallowing using a graphic function and analyze their importance to its opening mechanics. METHODS: This was a pilot study of relational event capture using a polar coordinate system applied to trans-nasal video-endoscopic recordings of the ET during 3 swallows in 5 adults. After topical anesthesia of the nose, a 45° telescope was introduced unilaterally and focused on the ipsilateral ET orifice...
February 18, 2017: Auris, Nasus, Larynx
https://www.readbyqxmd.com/read/28221164/positive-and-negative-cues-for-modulating-neurite-dynamics-and-receptor-expression
#8
Melissa Wrobel, Harini Gayathari Sundararaghavan
Many current peripheral nerve repair strategies focus on delivering positive, growth promoting cues (e.g. extracellular matrix, ECM) while eliminating negative, growth inhibiting cues (e.g. chondroitin sulfate proteoglycans, CSPGs) at the injury site. We hypothesized that recapitulating the positive and negative cues of the peripheral nerve injury microenvironment would improve regeneration. First, we tested the effects of a characteristic CSPG, Chondroitin Sulfate A (CSA) on neurite dynamics of dissociated chick embryo dorsal root ganglion (DRG) neurons using time lapse video microscopy...
February 21, 2017: Biomedical Materials
https://www.readbyqxmd.com/read/28217739/grounded-and-embodied-mathematical-cognition-promoting-mathematical-insight-and-proof-using-action-and-language
#9
Mitchell J Nathan, Candace Walkington
We develop a theory of grounded and embodied mathematical cognition (GEMC) that draws on action-cognition transduction for advancing understanding of how the body can support mathematical reasoning. GEMC proposes that participants' actions serve as inputs capable of driving the cognition-action system toward associated cognitive states. This occurs through a process of transduction that promotes valuable mathematical insights by eliciting dynamic depictive gestures that enact spatio-temporal properties of mathematical entities...
2017: Cogn Res Princ Implic
https://www.readbyqxmd.com/read/28216441/the-dynamics-of-signal-complex-formation-mediating-germling-fusion-in-neurospora-crassa
#10
Antonio Serrano, Hamzeh H Hammadeh, Stephanie Herzog, Julia Illgen, Marcel R Schumann, Martin Weichert, André Fleiβner
Colony initiation of filamentous fungi commonly involves fusion of germinating vegetative spores. Studies in Neurospora crassa revealed an unusual cell-cell communication mechanism mediating this process, in which the fusion partners coordinately alternate between two physiological stages, probably related to signal sending and receiving. This "cell dialog" involves the alternating, oscillatory recruitment of the SO protein and the MAK-2 MAP kinase module to the apical plasma membrane of growing fusion tips...
February 16, 2017: Fungal Genetics and Biology: FG & B
https://www.readbyqxmd.com/read/28210231/effects-of-agent-environment-symmetry-on-the-coordination-dynamics-of-triadic-jumping
#11
Akifumi Kijima, Hiroyuki Shima, Motoki Okumura, Yuji Yamamoto, Michael J Richardson
We investigated whether the patterns of coordination that emerged during a three-participant (triadic) jumping task were defined by the symmetries of the (multi) agent-environment task space. Triads were instructed to jump around different geometrical arrangements of hoops. The symmetry of the hoop geometry was manipulated to create two symmetrical and two asymmetrical participant-hoop configurations. Video and motion tracking recordings were employed to determine the frequencies of coordination misses (collisions or failed jumps) and during 20 successful jump sequences, the jump direction chosen (clockwise vs...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28203582/indifference-to-chaotic-motion-may-be-related-to-social-disinterest-in-children-with-autism
#12
Joshua Haworth, Anastasia Kyvelidou, Wayne Fisher, Nicholas Stergiou
Children with autism spectrum disorder tend to have little interest in the presence, actions, and motives of other persons. In addition, these children tend to present with a limited and overly redundant movement repertoire, often expressing hyperfixation and aversion to novelty. We explore whether this is related to a more fundamental lack of appreciation for various temporal dynamics, including periodic, chaotic, and aperiodic motion structures. Seven children with ASD (age, gender, and height matched with children without ASD) were asked to stand and watch the motion of a visual stimulus displayed on a large (55″) video monitor...
December 2016: Journal of Motor Learning and Development
https://www.readbyqxmd.com/read/28187138/a-randomized-controlled-trial-of-a-group-based-gaze-training-intervention-for-children-with-developmental-coordination-disorder
#13
Greg Wood, Charlotte A L Miles, Ginny Coyles, Omid Alizadehkhaiyat, Samuel J Vine, Joan N Vickers, Mark R Wilson
The aim of this study was to integrate a gaze training intervention (i.e., quiet eye training; QET) that has been shown to improve the throwing and catching skill of children with Developmental Coordination Disorder (DCD), within an approach (i.e., group therapy) that might alleviate the negative psychosocial impact of these motor skill deficits. Twenty-one children with DCD were split into either QET (8 male 3 female, mean age of 8.6 years (SD = 1.04) or technical training (TT) groups (7 male 3 female, mean age of 8...
2017: PloS One
https://www.readbyqxmd.com/read/28183689/game-based-rehabilitation-for-myoelectric-prosthesis-control
#14
Cosima Prahm, Ivan Vujaklija, Fares Kayali, Peter Purgathofer, Oskar C Aszmann
BACKGROUND: A high number of upper extremity myoelectric prosthesis users abandon their devices due to difficulties in prosthesis control and lack of motivation to train in absence of a physiotherapist. Virtual training systems, in the form of video games, provide patients with an entertaining and intuitive method for improved muscle coordination and improved overall control. Complementary to established rehabilitation protocols, it is highly beneficial for this virtual training process to start even before receiving the final prosthesis, and to be continued at home for as long as needed...
February 9, 2017: JMIR Serious Games
https://www.readbyqxmd.com/read/28169038/a-growing-need-hiv-education-in-long-term-care
#15
Kaitlin Siou, Maureen Mahan, Rod Cartagena, Soo Chan Carusone
As people living with HIV (PLHIV) age, knowledge of HIV and the associated care of those aging with HIV will become an increasingly important component of education for long-term care (LTC) providers. This descriptive study piloted two different approaches to distribute narrative-based HIV educational videos. Four LTC facilities were assigned to receive the videos to implement 'as usual' or to receive the videos in addition to blended learning sessions where the videos were shown with facilitated discussion with a nurse educator and a PLHIV...
February 3, 2017: Geriatric Nursing
https://www.readbyqxmd.com/read/28157565/variable-training-does-not-lead-to-better-motor-learning-compared-to-repetitive-training-in-children-with-and-without-dcd-when-exposed-to-active-video-games
#16
Emmanuel Bonney, Dorothee Jelsma, Gillian Ferguson, Bouwien Smits-Engelsman
BACKGROUND: Little is known about the influence of practice schedules on motor learning and skills transfer in children with and without developmental coordination disorder (DCD). Understanding how practice schedules affect motor learning is necessary for motor skills development and rehabilitation. AIMS: The study investigated whether active video games (exergames) training delivered under variable practice led to better learning and transfer than repetitive practice...
March 2017: Research in Developmental Disabilities
https://www.readbyqxmd.com/read/28156475/usability-and-acceptance-of-novel-personal-health-technology-to-support-early-palliative-care-for-patients-with-cancer-and-caregivers
#17
Sarah C Reed, Katherine Kim, Victoria Ngo, Wendy Wait, Ester Apesoa-Varano, Joy Morgan, Robin L Whitney, Emma Blackmon, Jill Joseph
73 Background: Little research has assessed whether and how technology can support early palliative care. Our team developed a HIPAA-compliant, cloud-based Personal Health Network (PHN) with a secure, online network of family, caregivers, clinicians and service providers designated by the patient; symptom reporting/management resources; and support for communication among network members via audio/video conferencing, messaging, and document sharing. This study examines PHN usability and acceptance, and identifies additional functions for early palliative care...
October 9, 2016: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/28154991/a-computational-framework-for-attentional-object-discovery-in-rgb-d-videos
#18
Germán Martín García, Mircea Pavel, Simone Frintrop
We present a computational framework for attention-guided visual scene exploration in sequences of RGB-D data. For this, we propose a visual object candidate generation method to produce object hypotheses about the objects in the scene. An attention system is used to prioritise the processing of visual information by (1) localising candidate objects, and (2) integrating an inhibition of return (IOR) mechanism grounded in spatial coordinates. This spatial IOR mechanism naturally copes with camera motions and inhibits objects that have already been the target of attention...
February 2, 2017: Cognitive Processing
https://www.readbyqxmd.com/read/28152768/improving-care-quality-for-patients-with-soft-tissue-and-bone-sarcoma-by-establishing-a-national-virtual-tumor-board-and-electronic-consultation-platform
#19
Andrew Fang, Maihgan Kavanagh, Brian Kim, Jason D Lee, Craig McCormick, Lee Jae Morse, Subir Nag, Grant Nybbaken, Peter Peng, Corey M Schwartz, Joseph Song, Denah Renee Taggart, Jeanette Cu Yu
211 Background: Bone and soft tissue sarcomas are relatively uncommon and their management is extremely complex requiring coordinated multidisciplinary expertise for optimal care. Because Kaiser Permanente operates across many geographic regions in the country, in-person tumor board is not practical. METHODS: The Kaiser Permanente Northern California medical oncology team has developed a system-based virtual tumor board (VTB) and electronic consultation (EC) platform comprised of experts from several key disciplines including musculoskeletal/surgical oncology, musculoskeletal radiology, pathology, radiation oncology, brachytherapy, medical adult and pediatric oncology...
March 2016: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/28152031/collective-behavior-quantification-on-human-odor-effects-against-female-aedes-aegypti-mosquitoes-open-source-development
#20
Abdul Halim Poh, Mahmoud Moghavvemi, Cherng Shii Leong, Yee Ling Lau, Alireza Safdari Ghandari, Alexlee Apau, Faisal Rafiq Mahamd Adikan
Classifying and quantifying mosquito activity includes a plethora of categories, ranging from measuring flight speeds, repellency, feeding rates, and specific behaviors such as home entry, swooping and resting, among others. Entomologists have been progressing more toward using machine vision for efficiency for this endeavor. Digital methods have been used to study the behavior of insects in labs, for instance via three-dimensional tracking with specialized cameras to observe the reaction of mosquitoes towards human odor, heat and CO2, although virtually none was reported for several important fields, such as repellency studies which have a significant need for a proper response quantification...
2017: PloS One
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