A Soft Haptic Glove Actuated with Shape Memory Alloy and Flexible Stretch Sensors

Haptic technology allows us to experience tactile and force sensations without the need to expose ourselves to specific environments. It also allows a more immersive experience with virtual reality devices. This paper presents the development of a soft haptic glove for kinesthetic perception. It is lightweight and soft to allow for a more natural hand movement. This prototype actuates two fingers with two shape memory alloy (SMA) springs. Finite element (FE) simulations of the spring have been carried out to set the dimensions of the actuators. Flexible stretch sensors provide feedback to the system to calculate the tension of the cables attached to the fingers. The control can generate several recognizable levels of force for any hand position since the objects to be picked up can vary in weight and dimension. The glove can generate three levels of force (100, 200 and 300 g) to evaluate more easily the proper functioning. We realized tests on 15 volunteers simulating forces in various order after a quick training. We also asked volunteers about the experience for comfort, global experience and simplicity). Results were satisfactory in both aspects: the glove fulfilled its function, and the users were comfortable with it.

Effect of Kinesthetic Perception, Eye-Hand Coordination, and Motivation on Lay Up Shoot

The purpose of this study was to determine whether there was a direct or indirect influence between kinesthetic perception, hand-eye coordination, and motivation for the shoot lay-up. The research method used in this study is Path Analysis to look for effects or relationships that affect variables. The subjects used in this study were Kuningan basketball athletes with 35 athletes. The results of this study show 1). There is a positive influence between kinesthetic perception (X1) on lay-up shoot skills (Y) in basketball athletes, 2) There is a positive influence between hand-eye coordination (X2) on a shoot (Y) lay-up skills in basketball athletes, 3 ) There is a positive influence between motivation (X3) on the skill speed of the lay-up shoot (Y) in basketball athletes, 4) There is a positive influence between kinesthetic perception (X1) on motivation (X3) on basketball athletes, 5) There is effect positive between hand-eye coordination (X2) to motivation (X3) in basketball athletes, 6) There is a positive influence between kinesthetic perception (X1) on shoot shoot-up skills (Y) through motivation (X3) in basketball athletes and 7 ) There is a positive influence of hand-eye coordination (X2) on a shoot (Y) through motivation (X3) lay-up skills in basketball athletes.

Efference copy in kinesthetic perception: A copy of what is it?

A number of notions in the fields of motor control and kinesthetic perception have been used without clear definitions. In this review, we consider definitions for efference copy, percept, and sense of effort based on recent studies within the physical approach, which assumes that the neural control of movement is based on principles of parametric control and involves defining time-varying profiles of spatial referent coordinates for the effectors. The apparent redundancy in both motor and perceptual processes is reconsidered based on the principle of abundance. Abundance of efferent and afferent signals is viewed as the means of stabilizing both salient action characteristics and salient percepts formalized as stable manifolds in high-dimensional spaces of relevant elemental variables. This theoretical scheme has led recently to a number of novel predictions and findings. These include, in particular, lower accuracy in perception of variables produced by elements involved in a multi-element task compared to the same elements in single-element tasks, dissociation between motor and perceptual effects of muscle co-activation, force illusions induced by muscle vibration, and errors in perception of unintentional drifts in performance. Taken together, these results suggest that participation of efferent signals in perception frequently involves distorted copies of actual neural commands, particularly those to antagonist muscles. Sense of effort is associated with such distorted efferent signals. Distortions in efference copy happen spontaneously and can also be caused by changes in sensory signals, e.g., those produced by muscle vibration.

Stability of Action and Kinesthetic Perception in Parkinson’s Disease

We present a review of action and perception stability within the theoretical framework based on the idea of control with spatial referent coordinates for the effectors at a number of hierarchical levels. Stability of salient variables is ensured by synergies, neurophysiological structures that act in multi-dimensional spaces of elemental variables and limit variance to the uncontrolled manifold during action and iso-perceptual manifold during perception. Patients with Parkinson’s disease show impaired synergic control reflected in poor stability (low synergy indices) and poor agility (low indices of anticipatory synergy adjustments prior to planned quick actions). They also show impaired perception across modalities, including kinesthetic perception. We suggest that poor stability at the level of referent coordinates can be the dominant factor leading to poor stability of percepts.

Application of developmental games based on kinesthetic perception to improve proprioceptive sensitivity, intelligence and cooperation in primary school children

Aim: to produce a game learning model based on kinesthetic perception to improve kinesthetic perception, play intelligence, and collaboration among elementary school children. Material and methods. The game learning model based on kinesthetic perception is adapted to the growth and development aspects of students which is packaged through the processing of limbs that is focused on the psychomotor domain consisting of a series of basic locomotor movements, manipulative, non-manipulative, cognitive play intelligence, and effective cooperation. The method used is research and development, namely descriptive, evaluative and experimental methods. This research method is used to produce a product, namely a game learning model based on the kinesthetic perception of children aged 7-8 years which is equivalent to lower grade elementary school students. Development procedures: (1) collecting research results and information, (2) analyzing the product to be developed, (3) developing the initial product, (4) conducting expert validation, (5) conducting small-scale trials and revisions, (6) conducting large-scale trials and revisions, (7) making final products, and (8) conducting effectiveness tests. The subjects of this study were grade 1 elementary school students. The data analysis techniques used were quantitative and qualitative descriptive analysis. The final product effectiveness test used one group pretest-posttest design experiment. Results. The results of this study are in the form of a kinesthetic perception-based game learning model to improve kinesthetic perception, playing intelligence, primary school children's collaboration which contains four games, namely (1) Target Shooting Games, (2) Train Car Games, (3) Flag Games, and ( 4) Rakartugu Games. From the results of the assessment of experts and practitioners, the game learning model based on kinesthetic perception has a validity of 0.963. Conclusions. Kinesthetic perception based game learning model is effective for developing kinesthetic perception limb processing skills, playing intelligence and cooperation.

Kinesthetic illusion induced by visual stimulation influences sensorimotor event-related desynchronization in stroke patients with severe upper-limb paralysis: A pilot study

Background: Repetition of motor imagery improves the motor function of patients with stroke. However, patients who develop severe upper-limb paralysis after chronic stroke often have an impaired ability to induce motor imagery. We have developed a method to passively induce kinesthetic perception using visual stimulation (kinesthetic illusion induced by visual stimulation [KINVIS]). Objective: This pilot study further investigated the effectiveness of KINVIS in improving the induction of kinesthetic motor imagery in patients with severe upper-limb paralysis after stroke. Methods: Twenty participants (11 with right hemiplegia and 9 with left hemiplegia; mean time from onset [±standard deviation], 67.0±57.2 months) with severe upper-limb paralysis who could not extend their paretic fingers were included in this study. The ability to induce motor imagery was evaluated using the event-related desynchronization (ERD) recorded during motor imagery before and after the application of KINVIS for 20 min. The alpha- and beta-band ERDs around the premotor, primary sensorimotor, and posterior parietal cortices of the affected and unaffected hemispheres were evaluated during kinesthetic motor imagery of finger extension and before and after the intervention. Results: Beta-band ERD recorded from the affected hemisphere around the sensorimotor area showed a significant increase after the intervention, while the other ERDs remained unchanged. Conclusions: In patients with chronic stroke who were unable to extend their paretic fingers for a prolonged period of time, the application of KINVIS, which evokes kinesthetic perception, improved their ability to induce motor imagery. Our findings suggest that although KINVIS is a passive intervention, its short-term application can induce changes related to the motor output system.

The effect of special exercises according to the principle of re-training in the development of kinesthetic perception among middle school students

The importance of research that has manifested in raising the level of perception and its different types for students in the intermediate stages of education using a method and principle from the principles of mathematical training science is repeated because of its great importance in building the correct motor side, in addition to delivering scientific information to trainers and teachers about the importance of this training to the teacher And the student in raising the level of perceptual-motor. The research objectives were: 1- Preparing special exercises according to the principle of re-training in the development of kinesthetic perception among middle school students. 2- Knowing the effect of special exercises according to the principle of re-training in developing sensory-motor perception among middle school students. Conclusion : 1-Training according to the principle of repetition has scientific significance in promoting and developing perceptual-motor awareness among middle school students. 2- The development of perceptual-motor awareness raises the aesthetic of the technical performance of sports for middle school students. 3-Adopting training according to the principle of repetition in the physical education lesson because of its scientific importance in promoting and developing perceptual-motor awareness among middle school students. 4-The emphasis in the physical education lesson on sensory-motor perception increases the aesthetic performance of athletic sports among middle school students