Article
Neurosciences
Yuki Nishi, Satoshi Nobusako, Taeko Tsujimoto, Ayami Sakai, Akio Nakai, Shu Morioka
Summary: The study found that children with poor manual dexterity exhibit spatial instability during a precision grip task and adapt differently to object weight. These findings contribute to our understanding of developmental coordination disorder.
Article
Multidisciplinary Sciences
Neelima Sharma, Madhusudhan Venkadesan
Summary: This study reveals that people rely on muscle-induced stiffness to maintain finger stability during precision grips. Adding stiffness increases maximal force output and reduces the demand for muscle cocontraction, allowing muscles to exert greater fingertip force. This balance of stability and compliance in hand function is achieved through neurally tuned muscle stiffness.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Psychology, Multidisciplinary
Yoshibumi Bunno, Chieko Onigata
Summary: The study demonstrated that pleasant emotion improves force control of isometric precision pinch grip. After viewing pleasant pictures, the variability of pinch force production and normalized root mean square value of electromyography decreased, indicating a positive impact of emotion on force steadiness.
FRONTIERS IN PSYCHOLOGY
(2022)
Article
Computer Science, Artificial Intelligence
Yansheng Wu, Shili Liang, Tao Yan, Jinxin Ao, Ze Zhou, Xiuping Li
Summary: This study presents a new method to simulate the linear changes of grip force using sEMG, providing a simple and practical way to precisely control the speed and strength of force for myoelectric hand. With the use of an adaptive filter, power line interference is effectively removed from the sEMG signal while retaining useful information. By employing various algorithms, grip patterns can be accurately identified and the value of grip force can be predicted. The results demonstrate the effectiveness of the method in simulating the linear change process of grip force with a minimal standard deviation of 0.14272.
EXPERT SYSTEMS WITH APPLICATIONS
(2022)
Review
Neurosciences
Volker Dietz
Summary: The dexterity of hands and fingers in primates is controlled by cortico-motoneuronal connections, leading to different neural control mechanisms for power grip and precision grip movements. Bilateral movements involve neural coupling for coordinated power grip movements, while independent finger movements are controlled by direct cortico-motoneuronal connections in skilled tasks like playing piano.
EUROPEAN JOURNAL OF NEUROSCIENCE
(2021)
Article
Neurosciences
Justin Tanner, Naomi Newman, Stephen Helms Tillery
Summary: Tactile cues from object interactions have a directional impact on grasp, with lower latency responses indicating exaggerated safety margins in certain directions. Sensitivity to tactile movement direction is higher in the ulnar-radial axis, suggesting the importance of both hand and gravity reference frames in force application.
FRONTIERS IN NEUROSCIENCE
(2021)
Article
Multidisciplinary Sciences
Ewelina Drelich, Jan Tracz, Adam Cisowski, Michal Kowalik, Aleksy Figurski, Monika Kwacz, Witold Rzadkowski
Summary: The aim of this paper is to present an analytical method for calculating forces on different parts of a hand prosthesis when gripping a cylindrical object. The method is based on analytical mechanics and involves solving a system with seven unknown forces using equilibrium equations. The method was validated through experiments using FSR sensors and was found to be accurate and applicable for various models and designs in mechatronics.
SCIENTIFIC REPORTS
(2023)
Article
Multidisciplinary Sciences
Laurent Opsomer, Benoit P. Delhaye, Vincent Theate, Jean-Louis Thonnard, Philippe Lefevre
Summary: In this study, the influence of gravity on isometric force control was examined. It was found that gravity creates an illusion that upward forces are larger than downward forces of the same magnitude. Additionally, gravity also affects the control of grip force. These findings have implications for the design of haptic devices to be used during flight or space activities.
Article
Chemistry, Analytical
Cederick Landry, Daniel Loewen, Harish Rao, Brendan L. Pinto, Robert Bahensky, Naveen Chandrashekar
Summary: The study successfully developed an algorithm to isolate grip force and push force from hand-handle pressure measurements and quantify their distributions among industrial workers. Results showed no correlation between grip force and push force, with grip force contributing more to total hand force. This can help better understand the risk of injury associated with different tasks.
Article
Neurosciences
Tomoya Gyoda, Kazuto Ishida, Tatsunori Watanabe, Ippei Nojima
Summary: This study found that post-reactivation training in one limb can significantly enhance motor skills in the opposite limb, especially under constant training conditions.
NEUROSCIENCE LETTERS
(2022)
Article
Engineering, Biomedical
Betzalel Fialkoff, Harel Hadad, Dario Santos, Franco Simini, Marcelo David
Summary: Physiological muscle disorders caused by diseases such as sarcopenia or strokes affect millions of people each year, and existing medical examinations for assessing muscle health lack standardization. In this study, a reliable framework using surface electromyography (sEMG) signals is proposed for hand grip force estimation. The results show promising accuracy and suggest potential for standardized muscle health assessment.
BIOMEDICAL SIGNAL PROCESSING AND CONTROL
(2022)
Article
Clinical Neurology
Elizabeth Jansen, Mandy Miller Koop, Anson B. Rosenfeldt, Jay L. Alberts
Summary: High intensity aerobic exercise, whether forced or voluntary, significantly improves symptoms and manual dexterity in PD patients by enhancing connectivity between basal ganglia and cortical areas, leading to improved motor control and execution abilities.
PARKINSONISM & RELATED DISORDERS
(2021)
Article
Computer Science, Cybernetics
Assaf Botzer, Yotam Sahar, Michael Wagner, Tomer Elbaum
Summary: The current experiment aimed to test the feasibility of using grip force as a measure of stress in joystick-controlled tasks, and found that some participants exhibited increased grip force under stress, while not all participants gripped significantly harder during stress manipulation.
BEHAVIOUR & INFORMATION TECHNOLOGY
(2021)
Article
Engineering, Biomedical
Na Zhang, Ke Li, Guanglin Li, Raviraj Nataraj, Na Wei
Summary: Production of functional forces by human motor systems requires coordination across multiple muscles. This study investigated intermuscular coordination for grip and pinch at different force levels using a novel method called multiplex recurrence networks (MRN). The results showed differences in network parameters between grasp types and force levels, with extrinsic muscles exhibiting higher muscle coupling than intrinsic muscles.
IEEE TRANSACTIONS ON NEURAL SYSTEMS AND REHABILITATION ENGINEERING
(2021)
Article
Engineering, Industrial
Xenia Karekla, Chuanlin Fang
Summary: This study found that age, gender, task, and acceleration are significant factors affecting the development of upper body balancing mechanisms for bus passengers. Peak grip force and duration intensify as acceleration increases, especially during stair ascending, with middle-aged males showing higher instability compared to other passengers.