scholarly journals Human Movement Control

10.5772/63720 ◽  
2016 ◽  
Author(s):  
David Balderas ◽  
Mario Rojas
Keyword(s):  
Movement Control ◽  
Human Movement

Influence of lntermittency and Synergy on Grasping

Motor Control ◽  
1999 ◽  
Vol 3 (3) ◽  
pp. 280-284 ◽  
Author(s):  
Peter D. Neilson
Keyword(s):  
Trajectory Planning ◽  
Movement Control ◽  
Human Movement ◽  
Optimization Criterion ◽  
Coordinate Space ◽  
Processing Load ◽  
Minimum Jerk

This commentary firstly supports Smeets and Brenner in their choice of a kinematic trajectory, submitting that the challenge posed by the rival torque-change formulation is resolved by consideration of intermittency in human movement control. Second, it examines the choice of optimization criterion for trajectory planning, arguing in favor of minimum acceleration rather than minimum jerk. Third, using the notion of optimized trajectories in task-dependent coordinate space together with synergy generation, it suggests a formulation that reduces the processing load entailed in Smeets and Brenner's proposal of individual trajectories for each digit.

Unique features of human movement control predicted by the leading joint hypothesis

2012 ◽  
Vol 35 (4) ◽  
pp. 223-224
Author(s):  
Natalia Dounskaia
Keyword(s):  
Motor Control ◽  
Cognitive Processes ◽  
Tool Use ◽  
Movement Control ◽  
Human Movement ◽  
Limb Movements ◽  
Human Limb

AbstractVaesen suggests that motor control is not among the primary origins of the uniqueness of human tool use. However, recent findings show that cognitive processes involved in control of human limb movements may be much more sophisticated than it was believed previously. The sophistication of movement control may substantially contribute to the uniqueness of humans in tool use.

Choosing the Right “Bit Pad”: Human Factors Aspects of Digitizing Tablet Size

1982 ◽  
Vol 26 (7) ◽  
pp. 615-615
Author(s):  
James L. Knight
Keyword(s):  
Computer Graphics ◽  
Task Analysis ◽  
Movement Control ◽  
Human Movement ◽  
Optimum Size ◽  
Wide Range ◽  
The Right ◽  
Parameter Values ◽  
Selection Of ◽  
Digitizing Tablet

Entry of non-alphanumeric information into computer graphics systems is frequently accomplished by moving a drawing implement over the surface of a digitizing tablet. These tablets are commercially available in a wide range of sizes. Therefore, an important question from both ergonomic and economic standpoints concerns the optimum size for the digitizing tablet. To answer this question, models of human movement control were applied to the graphic operator's task. An experiment was conducted to obtain appropriate model parameter values and to empirically evaluate the resulting predictions of the generated models. A combination of task analysis and movement control modelling thus allowed selection of an optimum digitizing tablet size for a range of computer-graphics entry tasks. Details and results of this methodology will be presented.

Orientation and Movement in Unusual Force Environments

1993 ◽  
Vol 4 (3) ◽  
pp. 134-142 ◽  
Author(s):  
James R. Lackner
Keyword(s):  
Present Article ◽  
Movement Control ◽  
Human Movement ◽  
Space Mission ◽  
Artificial Gravity ◽  
Adaptive Changes ◽  
Earth Gravity ◽  
Long Duration ◽  
Wide Range ◽  
Manned Space

A manned space mission to Mars might take as long as 1 year each way. Consequently, artificial gravity is being considered as a way of preventing the debilitating effects of long-duration exposure to microgravity on the human hotly. The present article discusses some of the problems associated with adapting to the rotation levels that might be used to generate artificial gravity. It also describes how exposure to background-force levels greater or less than the 1-G force of Earth gravity affects orientation and movement control. The primary emphasis of the article is that human movement and orientation control are dynamically adapted to the 1-G force background of Earth and that accommodation to altered force levels or to rotating environments requires a wide range of adaptive changes.

scholarly journals Motor cortical beta transients delay movement initiation and track errors

2018 ◽  
Author(s):  
Simon Little ◽  
James Bonaiuto ◽  
Gareth Barnes ◽  
Sven Bestmann
Keyword(s):  
Movement Control ◽  
Monitoring And Evaluation ◽  
Human Movement ◽  
High Amplitude ◽  
Burst Activity ◽  
Beta Activity ◽  
Movement Initiation ◽  
Before And After ◽  
Motor Cortical ◽  
Spatio Temporal

ABSTRACTMotor cortical activity in the beta range (13-30 Hz) is a hallmark signature of healthy and pathological movement, but its behavioural relevance remains unclear. Recent work in primates and human sensory cortex suggests that sustained oscillatory beta activity observed on average, may arise from the summation of underlying short-lasting, high-amplitude bursts of activity. Classical human movement-related event-related beta desynchronisation (ERD) and synchronization (ERS) may thus provide insufficient, non-dynamic, summaries of underlying focal spatio-temporal burst activity, limiting insight into their functional role during healthy and pathological movement.Here we directly investigate this transient beta burst activity and its putative behavioural relevance for movement control, using high-precision magnetoencephalography (MEG). We quantified the subject-specific (n=8), trial-wise (n>12,000) dynamics of beta bursts, before and after movement. We show that beta activity on individual trials is dominated by high amplitude, short lasting bursts. While average beta changes generally manifest as bilaterally distributed activity (FWHM = 25mm), individual bursts are spatially more focal (FWHM = 6 mm), sporadic (1.3 −1.5/s), and transient (mean: 96 ms).Prior to movement (the period of the classical ERD), the timing of the last pre-movement burst predicts movement onset, suggesting a role in the specification of the goal of movement. After movement (the period of the classical ERS), the first beta burst is delayed by ~100ms after a response error occurs, intimating a role in error monitoring and evaluation.Movement-related beta activity is therefore dominated by a spatially dispersed summation of short lasting, sporadic and focal bursts. Movement-related beta bursts coordinate the retrieval and updating of movement goals in the pre- and post-movement periods, respectively.

Kinaesthesia and Methods for its Assessment: Literature Review

2010 ◽  
Vol 19 (5-6) ◽  
pp. 165-208 ◽  
Author(s):  
Jernej Rosker ◽  
Nejc Sarabon
Keyword(s):  
Literature Review ◽  
Injury Prevention ◽  
Measurement Techniques ◽  
Movement Control ◽  
Human Movement ◽  
Sports Injury ◽  
Predisposing Factor ◽  
Factors Affecting ◽  
Central Processing ◽  
Prevention Methods

Kinaesthesia and Methods for its Assessment: Literature Review In this review measurement techniques used for kinaesthetic sense assessment are presented. Kinaesthesia is an important part of human movement control and provides us with better understanding of specific movement system adaptations to fatigue, training and injury. Additionally, decreased kinaesthesia can be an injury predisposing factor, which stresses the necessity for its assessment in sports injury prevention programs. First, terminology and functional concept of kinaesthesia is presented in relation to other related concepts like proprioception and sensory-motor function. For better understanding, basic underlying neurological backgrounds are discussed in chapter two, encompassing peripheral sensory fields as well as the basics of the central processing. Additionally, factors affecting kinaesthesia and its adaptations to training are presented. Functional aspects are discussed, supporting the role of assessment of kinaesthesia in sports and rehabilitation. In the third chapter, a proposal for measuring methods classification is given. In the final chapter, different measuring protocols and their modifications are presented. Due to their usefulness in sports and injury prevention, methods for measuring sense of joint position, movement onset and active tracking are discussed in more detail. Possibilities and examples of their application to sports and sports injury rehabilitation settings are presented. Some basic guidelines are given of how to use these methods in training or for screening kinaesthesia.

Analysis and Design of a Wearable Robot for Lower-Limb Rehabilitation Training

2011 ◽  
Vol 135-136 ◽  
pp. 256-260
Author(s):  
Yan Chu ◽  
Yan Shao ◽  
Liang Chen
Keyword(s):  
Lower Limb ◽  
Movement Control ◽  
Human Movement ◽  
Approximation Formula ◽  
Wearable Robot ◽  
Rehabilitation Training ◽  
Analysis And Design ◽  
Advantages And Disadvantages ◽  
Limb Rehabilitation ◽  
Lower Limb Rehabilitation

After studying the advantages and disadvantages of existing wearable lower limb rehabilitation training robot product performance, by establishing human movement control model and the quadratic approximation formula, we designed a kind of control high-precision of lower limb rehabilitation training robots. The robot can simulate the normal actions as sitting, standing and walking for patients to take rehabilitation training. The structure of it is simple and reliable. And it is easily to be manufactured. The robot provides an ideal device for lower limb rehabilitation training

scholarly journals Risk Factors Of Loneliness And Anxiety Symptoms During Movement Control Order Among University Students: A Comparative Analysis

2021 ◽  
Vol 4 (2) ◽  
pp. 135-144
Author(s):  
Nurul Rashidah Mohamed Roseli ◽  
Izzah Auni Mahyuddin
Keyword(s):  
Risk Factors ◽  
Comparative Analysis ◽  
University Students ◽  
Economic Status ◽  
Movement Control ◽  
Human Movement ◽  
Residential College ◽  
Significant Difference ◽  
Control Order ◽  
Temporary Closure

COVID-19 is a dreadful virus with extreme infectiousness as it spreads through both direct and indirect methods, as long as human movement exists. Malaysia introduced the first phase of Movement Control Order (MCO) on 18th of March, following the success of other earlier countries such as China, Scotland and Eng-land. A number of prohibitions were enforced to minimize human movements in the country. This includes the temporary closure of all educational institutions. The closure of institutions results in the division of university students into two groups: (1) students who were stranded in their respective universities and (2) students who managed to return to their respective hometowns. Meanwhile, prevalence of mental health disturbances among university students was found to be high during MCO due to loneliness and constant pressure from chaotic situa-tion. Previous evidences from other population indicate different prevalence of loneliness across social groups such as gender, economic status and locality. This paper provides a comparative analysis to discover the risk factors of loneliness among university students. Results show that most university students exhibit moderate to high loneliness, however there is no significant difference of loneli-ness across gender and nationality. No significant difference of loneliness is iden-tified between students who were living in residential college during MCO and those who were staying out-campus. Initiatives to address loneliness issues in residential college is further discussed.

Generalization of the resource-rationality principle to neural control of goal-directed movements

2020 ◽  
Vol 43 ◽  
Author(s):  
Natalia Dounskaia ◽  
Yury P. Shimansky
Keyword(s):  
Decision Making ◽  
Information Processing ◽  
Neural Control ◽  
Optimality Criterion ◽  
Sensory Information ◽  
Movement Control ◽  
Human Movement ◽  
Control Optimization ◽  
Sensory Information Processing

Abstract We review evidence that the resource-rationality principle generalizes to human movement control. Optimization of the use of limited neurocomputational resources is described by the inclusion of the “neurocomputational cost” of sensory information processing and decision making in the optimality criterion of movement control. A resulting tendency to decrease this cost can account for various phenomena observed during goal-directed movements.

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