keyword
MENU ▼
Read by QxMD icon Read
search

Dual task

keyword
https://www.readbyqxmd.com/read/28819579/dual-task-performance-in-gba-parkinson-s-disease
#1
Karin Srulijes, Kathrin Brockmann, Senait Ogbamicael, Markus A Hobert, Ann-Kathrin Hauser, Claudia Schulte, Jasmin Fritzen, Michael Schwenk, Thomas Gasser, Daniela Berg, Walter Maetzler
INTRODUCTION: Parkinson's disease patients carrying a heterozygous mutation in the gene glucocerebrosidase (GBA-PD) show faster motor and cognitive decline than idiopathic Parkinson's disease (iPD) patients, but the mechanisms behind this observation are not well understood. Successful dual tasking (DT) requires a smooth integration of motor and nonmotor operations. This study compared the DT performances between GBA-PD and iPD patients. METHODS: Eleven GBA-PD patients (p...
2017: Parkinson's Disease
https://www.readbyqxmd.com/read/28817439/faculty-development-for-the-operating-room-an-examination-of-the-effectiveness-of-an-intraoperative-teaching-course-for-surgeons
#2
Aimee K Gardner, Matthew D Timberlake, Brian J Dunkin
OBJECTIVE: We describe a half-day faculty development course designed to equip surgical educators with evidence-based teaching frameworks shown to promote learning in the operating room (OR). We hypothesize that participating faculty will deliver improved instruction as perceived by residents. METHODS: Residents anonymously rated faculty teaching behaviors among whom they had recently worked in the OR (minimum 3 cases in preceding 6 months) using the Briefing - Intraoperative teaching - Debriefing Assessment Tool (BIDAT; 1 = never, 5 = always)...
August 16, 2017: Annals of Surgery
https://www.readbyqxmd.com/read/28810928/gait-characteristics-and-their-discriminative-power-in-geriatric-patients-with-and-without-cognitive-impairment
#3
Lisette H J C Kikkert, Nicolas Vuillerme, Jos P van Campen, Bregje A Appels, Tibor Hortobágyi, Claudine J Lamoth
BACKGROUND: A detailed gait analysis (e.g., measures related to speed, self-affinity, stability, and variability) can help to unravel the underlying causes of gait dysfunction, and identify cognitive impairment. However, because geriatric patients present with multiple conditions that also affect gait, results from healthy old adults cannot easily be extrapolated to geriatric patients. Hence, we (1) quantified gait outcomes based on dynamical systems theory, and (2) determined their discriminative power in three groups: healthy old adults, geriatric patients with- and geriatric patients without cognitive impairment...
August 15, 2017: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/28809700/cognitive-cost-of-using-augmented-reality-displays
#4
James Baumeister, Seung Youb Ssin, Neven A M ElSayed, Jillian Dorrian, David P Webb, James A Walsh, Timothy M Simon, Andrew Irlitti, Ross T Smith, Mark Kohler, Bruce H Thomas
This paper presents the results of two cognitive load studies comparing three augmented reality display technologies: spatial augmented reality, the optical see-through Microsoft HoloLens, and the video see-through Samsung Gear VR. In particular, the two experiments focused on isolating the cognitive load cost of receiving instructions for a button-pressing procedural task. The studies employed a self-assessment cognitive load methodology, as well as an additional dual-task cognitive load methodology. The results showed that spatial augmented reality led to increased performance and reduced cognitive load...
August 10, 2017: IEEE Transactions on Visualization and Computer Graphics
https://www.readbyqxmd.com/read/28806193/speech-perception-in-noise-and-listening-effort-of-older-adults-with-nonlinear-frequency-compression-hearing-aids
#5
James Shehorn, Nicole Marrone, Thomas Muller
OBJECTIVES: The purpose of this laboratory-based study was to compare the efficacy of two hearing aid fittings with and without nonlinear frequency compression, implemented within commercially available hearing aids. Previous research regarding the utility of nonlinear frequency compression has revealed conflicting results for speech recognition, marked by high individual variability. Individual differences in auditory function and cognitive abilities, specifically hearing loss slope and working memory, may contribute to aided performance...
August 10, 2017: Ear and Hearing
https://www.readbyqxmd.com/read/28803956/selective-cholinergic-depletion-of-pedunculopontine-tegmental-nucleus-aggravates-freezing-of-gait-in-parkinsonian-rats
#6
Hu Xiao, Min Li, Junbin Cai, Nanxiang Li, Ming Zhou, Peng Wen, Zhengyuan Xie, Qiang Wang, Jingyu Chang, Wangming Zhang
Many patients of advanced Parkinson's disease (PD) suffer from intractable axial symptoms (severe gait and postural impairments), which were recently speculated to be more relevant to cholinergic degeneration in the brainstem than dopaminergic degeneration in the substantia nigra compacta (SNc). To investigate the role of the cholinergic cells of the pedunculopontine tegmental nucleus (PPTg) on motor deficits, especially the axial motor impairments, we measured and analyzed the gait performance of sham lesion rats, SNc dopaminergic lesion rats, PPTg cholinergic lesion rats, and combined lesion rats by using the CatWalk system...
August 10, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28803767/semantic-control-deficits-impair-understanding-of-thematic-relationships-more-than-object-identity
#7
Hannah Thompson, James Davey, Paul Hoffman, Glyn Hallam, Rebecca Kosinski, Sarah Howkins, Emma Wooffindin, Rebecca Gabbitas, Elizabeth Jefferies
Recent work has suggested a potential link between the neurocognitive mechanisms supporting the retrieval of events and thematic associations (i.e., knowledge about how concepts relate in a meaningful context) and semantic control processes that support the capacity to shape retrieval to suit the circumstances. Thematic associations and events are inherently flexible: the meaning of an item changes depending on the context (for example, lamp goes with reading, bicycle and police). Control processes might stabilise weak yet currently-relevant interpretations during event understanding...
August 10, 2017: Neuropsychologia
https://www.readbyqxmd.com/read/28803750/motor-cortex-and-spinal-cord-neuromodulation-promote-corticospinal-tract-axonal-outgrowth-and-motor-recovery-after-cervical-contusion-spinal-cord-injury
#8
N Zareen, M Shinozaki, D Ryan, H Alexander, A Amer, D Truong, N Khadka, A Sarkar, S Naeem, M Bikson, J Martin
Cervical injuries are the most common form of SCI. In this study, we used a neuromodulatory approach to promote skilled movement recovery and repair of the corticospinal tract (CST) after a moderately severe C4 midline contusion in adult rats. We used bilateral epidural intermittent theta burst (iTBS) electrical stimulation of motor cortex to promote CST axonal sprouting and cathodal trans-spinal direct current stimulation (tsDCS) to enhance spinal cord activation to motor cortex stimulation after injury. We used Finite Element Method (FEM) modeling to direct tsDCS to the cervical enlargement...
August 10, 2017: Experimental Neurology
https://www.readbyqxmd.com/read/28802368/study-of-the-effects-of-hearing-on-static-and-dynamic-postural-function-in-children-using-cochlear-implants
#9
Malihah Mazaheryazdi, Abdollah Moossavi, Javad Sarrafzadah, Saeed Talebian, Shohreh Jalaie
OBJECTIVE: The present study aimed to evaluate the postural control perturbations by the center of pressure parameters in two main approaches, cochlear implant turned "on" and "off". METHODS: We included 25 children aged 8-10 years with unilateral cochlear implants and bilateral vestibular hypofunction deficit. To evaluate the postural function, each children was asked to stand on the force plate under 3 different conditions and cochlear implant turned "on" and "off": Condition (A) double stance from open eyes to closed eyes, Condition (B) double stance with open eyes engaging in the dual task and Condition (C) From double leg stance to one leg stance with open eyes for assessment of dynamic postural control...
September 2017: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/28796604/dual-temporal-and-spatial-sparse-representation-for-inferring-group-wise-brain-networks-from-resting-state-fmri-dataset
#10
Junhui Gong, Xiaoyan Liu, Tianming Liu, Jiansong Zhou, Gang Sun, Juanxiu Tian
Recently, sparse representation has been successfully used to identify brain networks from task-based fMRI dataset. However, when using the strategy to analyze resting-state fMRI dataset, it is still a challenge to automatically infer the group-wise brain networks under consideration of group commonalities and subject-specific characteristics. In the paper, a novel method based on dual temporal and spatial sparse representation (DTSSR) is proposed to meet this challenge. Firstly, the brain functional networks with subject-specific characteristics are obtained via sparse representation with online dictionary learning for the fMRI time series (temporal domain) of each subject...
August 9, 2017: IEEE Transactions on Bio-medical Engineering
https://www.readbyqxmd.com/read/28795835/explicit-goal-driven-attention-unlike-implicitly-learned-attention-spreads-to-secondary-tasks
#11
Douglas A Addleman, Jinyi Tao, Roger W Remington, Yuhong V Jiang
To what degree does spatial attention for one task spread to all stimuli in the attended region, regardless of task relevance? Most models imply that spatial attention acts through a unitary priority map in a task-general manner. We show that implicit learning, unlike endogenous spatial cuing, can bias spatial attention within one task without biasing attention to a spatially overlapping secondary task. Participants completed a visual search task superimposed on a background containing scenes, which they were told to encode for a later memory task...
August 10, 2017: Journal of Experimental Psychology. Human Perception and Performance
https://www.readbyqxmd.com/read/28790912/associations-of-childhood-and-adulthood-cognition-with-bone-mineral-density-in-later-adulthood-a-population-based-longitudinal-study
#12
Rebecca Bendayan, Diana Kuh, Rachel Cooper, Stella Muthuri, Graciela Muniz-Terrera, Judith Adams, Kate Ward, Marcus Richards
This study explores the association between cognitive ability in childhood and midlife and bone health outcomes in early old age; and the relationships of these bone measures with contemporaneous and subsequent cognitive ability in the MRC National Survey of Health and Development (NSHD). This British birth cohort assessed areal and volumetric bone mineral density (aBMD and vBMD) at age 60-64, derived from peripheral quantitative computed tomography and dual-energy X-ray absorptiometry, and cognitive performance from childhood to age 69, among 866 women and 792 men...
2017: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/28779766/the-discovery-of-macitentan-a-standard-medicinal-chemistry-program
#13
Martin H Bolli
A plethora of properties are typically studied during a medicinal chemistry program and many of these parameters may shape the cascade of compound selection. Given the task to discover a molecule with a profile superior to that of the dual endothelin receptor antagonist bosentan, we tailored our compound profiling cascade to the specific properties that were not optimal in bosentan, namely in vivo efficacy and safety. Contrary to conventional thinking, we therefore focused on corresponding in vivo experiments...
August 9, 2017: Chimia
https://www.readbyqxmd.com/read/28778023/the-interacting-effects-of-treadmill-walking-and-different-types-of-visuospatial-cognitive-task-discriminating-dual-task-and-age-effects
#14
Mayur Nankar, Tony Szturm, Jonathan Marotta, Barbara Shay, Olivier Beauchet, Gilles Allali
OBJECTIVE: The objective of this study is to examine the influence that visuospatial cognitive tasks have on gait function during DT treadmill walking, and as a function of age. Conversely, to examine the influence that walking has on executive functions involving visuospatial processing. METHODS: Twenty-five young (26±6.1years) and 25 older adults (76±3.9) performed different types of computerized visuomotor (VM) tracking and visuospatial cognitive tasks (VCG) while standing and treadmill walking...
July 27, 2017: Archives of Gerontology and Geriatrics
https://www.readbyqxmd.com/read/28778022/walking-modality-but-not-task-difficulty-influences-the-control-of-dual-task-walking
#15
J G Wrightson, N J Smeeton
During dual-task gait, changes in the stride-to-stride variability of stride time (STV) are suggested to represent the allocation of cognitive control to walking [1]. However, contrasting effects have been reported for overground and treadmill walking, which may be due to differences in the relative difficulty of the dual task. Here we compared the effect of overground and treadmill dual-task walking on STV in 18 healthy adults. Participants walked overground and on a treadmill for 120s during single-task (walking only) and dual-task (walking whilst performing serial subtractions in sevens) conditions...
July 20, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28778021/neural-correlates-of-obstacle-negotiation-in-older-adults-an-fnirs-study
#16
Michelle Chen, Sarah Pillemer, Sarah England, Meltem Izzetoglu, Jeannette R Mahoney, Roee Holtzer
Older adults are less efficient at avoiding obstacles compared to young adults, especially under attention-demanding conditions. Using functional near-infrared-spectroscopy (fNIRS), recent studies implicated the prefrontal cortex (PFC) in cognitive control of locomotion, notably under dual-task walking conditions. The neural substrates underlying Obstacle Negotiation (ON), however, have not been established. The current study determined the role of the PFC in ON during walking in seniors. Non-demented older adults (n=90; mean age=78...
July 18, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28776432/managing-student-behavior-in-dual-immersion-classrooms-a-study-of-class-wide-function-related-intervention-teams
#17
Blake D Hansen, Paul Caldarella, Leslie Williams, Howard P Wills
Classroom management in dual immersion classrooms includes unique challenges. The teacher must instruct and correct in the L2 language, in which students are beginning learners, and effective classroom management strategies appropriate to the L2 context. Class-Wide Function-Related Intervention Teams (CW-FIT) is a positive classroom management program that teaches social skills and uses group contingencies to improve behavior. The present study examined the ability of French immersion teachers to implement CW-FIT in the L2, including the effects of CW-FIT on teacher praise and reprimand rates and as well as on students' classroom behavior...
September 2017: Behavior Modification
https://www.readbyqxmd.com/read/28773148/an-intelligent-gear-fault-diagnosis-methodology-using-a-complex-wavelet-enhanced-convolutional-neural-network
#18
Weifang Sun, Bin Yao, Nianyin Zeng, Binqiang Chen, Yuchao He, Xincheng Cao, Wangpeng He
As a typical example of large and complex mechanical systems, rotating machinery is prone to diversified sorts of mechanical faults. Among these faults, one of the prominent causes of malfunction is generated in gear transmission chains. Although they can be collected via vibration signals, the fault signatures are always submerged in overwhelming interfering contents. Therefore, identifying the critical fault's characteristic signal is far from an easy task. In order to improve the recognition accuracy of a fault's characteristic signal, a novel intelligent fault diagnosis method is presented...
July 12, 2017: Materials
https://www.readbyqxmd.com/read/28768738/altered-tactile-sensitivity-in-children-with-attention-deficit-hyperactive-disorder
#19
Nicolaas A J Puts, Ashley D Harris, Mark Mikkelsen, Mark Tommerdahl, Richard Ae Edden, Stewart H Mostofsky
ADHD is characterized by an inability to concentrate, heightened activity, and hypermotoric behavior, but sensory, e.g. tactile, problems are common. The literature on tactile impairments in ADHD is limited, with most work employing clinical observations or questionnaires. Here, we study tactile processing in children with ADHD, and hypothesize that children with ADHD show reduced performance in tasks closely linked to inhibition. Sixty seven children with ADHD and 62 typically developing children performed a battery of tasks grouped in domains: simple and choice reaction time; static and dynamic detection threshold (probing feed-forward inhibition); amplitude discrimination without adaptation, and with dual, and single-site adaptation (probing lateral inhibition and adaptation); sequential and simultaneous frequency discrimination (previously linked to GABA); and temporal order judgment with and without a synchronous carrier stimulus...
August 2, 2017: Journal of Neurophysiology
https://www.readbyqxmd.com/read/28767690/a-simplified-prevention-bundle-with-dual-hand-hygiene-audit-reduces-early-onset-ventilator-associated-pneumonia-in-cardiovascular-surgery-units-an-interrupted-time-series-analysis
#20
Kang-Cheng Su, Yu Ru Kou, Fang-Chi Lin, Chieh-Hung Wu, Jia-Yih Feng, Shiang-Fen Huang, Tao-Fen Shiung, Kwei-Chun Chung, Yu-Hsiu Tung, Kuang-Yao Yang, Shi-Chuan Chang
BACKGROUND: To investigate the effect of a simplified prevention bundle with alcohol-based, dual hand hygiene (HH) audit on the incidence of early-onset ventilation-associated pneumonia (VAP). METHODS: This 3-year, quasi-experimental study with interrupted time-series analysis was conducted in two cardiovascular surgery intensive care units in a medical center. Unaware external HH audit (eHH) performed by non-unit-based observers was a routine task before and after bundle implementation...
2017: PloS One
keyword
keyword
96679
1
2
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"