Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 17 of 17 for “"Grip Force"”.
-
Effects of Movement Context on Reach-Grasp-Lift Motion and Grip Force after Stroke
… tracking and pressure sensor quantification of grip force, we assessed upper extremity task performance in people with post-stroke hemiparesis. To evaluate effects of movement speed, we compared paretic-limb performance of a reach-grasp-lift task at a self-selected preferred speed to the same …
-
Dual-task Performance Involving Grip Force Control in Older Adults with Type 2 Diabetes
… brain structures responsible for attention and grip force control. Precision grip force relies on complex tuning of upper-extremity forces. The primary aim of this study was to assess dual-task costs (DTC) in older adults with T2D through tasks involving attention and precision grip force …
-
Second Generation Data-Logging System for Long-Duration Field Measurement of Vibration Exposure and Grip Force
… captured full vibration waveforms over multiple force and acceleration channels was created. In this device, signals are anti-alias filtered, sampled, converted, and stored to a solid state memory device over the course of an entire workday (i.e., greater than or equal to 8 hours). The device …
-
The Impact of Type 2 Diabetes and Associated Diabetic Peripheral Neuropathy on Grip Force Control and Hand Function
… Sensory such as proprioception and motor such as grip force control. Several questions were addressed. First, does T2D and DPN cause finger proprioception deficits? Second, does T2D and DPN affect grip force control? Third, what is the role of sensation, specifically proprioception, in motor …
-
Mirror Neurons are Modulated by Reward Expectation and Grip Force in the Sensorimotor Cortices (S1, M1, PMd, PMv)
… trained to perform a cued reward level isometric grip force task, where the NHPs had to apply visually cued grip force to move and transport a virtual object. We found a population of (S1, M1, PMd, PMv) units that significantly represented grip force during manual and observational trials. We …
-
Development and Application of a Portable System to Reliably Measure Grip Forces Using Thin-Film Force Sensors
<p>Accurate tracking of hand grip force is an important consideration needed for a robust understanding in the study of human biomechanics. One aspect where it proves useful is in hand-arm vibration, such as from gripping a power tool. Depending on how firmly the user is gripping the tool, they may …
-
Design of a virtual environment for physiological and subjective monitoring of user presence in VR
… physiological cue this study aims to inspect is grip-force, and its possible consistency with changes in other physiological responses, such as heart rate and respiratory response. In order to engender measurable variations in grip-force, the developed VE was designed to incorporate a gripping …
-
Vibrotactile sensory substitution for post-stroke rehabilitation
… to assess if the individual is using appropriate grip force to hold and use objects; lack of sensory feedback can lead to dropped or damaged objects, and possible hand injury. Existing force biofeedback devices are overly complex and difficult to use in the home. The goal of this project is to …
-
Adaptive robust interaction control for low-cost robotic grasping
… area in the field of robotics. When a gripper starts interacting with an object to perform a grasp, the mechanical properties of the object (stiffness and damping) will play an important role. A gripper which is stable in isolated conditions, can become unstable when coupled to an …
-
A study of vibration response characteristics of the human hand-arm system
… point mechanical impedance; (ii) study of hand-grip pressure distribution to gain an insight to a probable mechanism leading to VWF disease; (iii) study of electromyography of finger flexor muscles to enhance an understanding of the vibration induced loss of muscle and grip strength; and (iv) …
-
The design of an intuitive teaching interface for robot programming by human demonstration
… The prototype incorporates 6 degree of freedom force and position sensing with tactile and grip position sensing. Total mass was a low 850 grams. Preliminary experimental results proved ease of use and very low error: 20.3 grf. average force error for a 1 Kgf. applied load, and 16.6 grf. average …
-
An investigation of the ergonomics and biomechanics of rifle shooting from the standing position
… Transducers were developed to measure foot forces in the vertical and horizontal plane, recoil force on the shoulder and the grip force of the trigger hand. Kinematic data was collected with a video camera. The study revealed that recoil energy was dependent on the attributes of the shooter. …
-
Assessment of force coordination and neuromuscular quickness in healthy adults
… manipulated, an individual must apply a grip force (GF) perpendicular to the object’s surface to overcome load force (LF), which acts tangential to the surface to counteract the object’s weight and inertia. Previous studies have shown an elaborate coordination between GF and LF in a …
-
Dynamic ergonomic analysis and simulation of fastening operation
… at awkward postures is subjected to external forces that may pose a risk of developing ergonomic injuries. For design of safe workplaces and selection of tools it is necessary to identify the probable causes of discomfort by simulating the work conditions and quantifying the risk factors. An …
-
Finger force capability: measurement and prediction using anthropometric and myoelectric measures
Hand and finger force data are used in many settings, including industrial design and indicating progress during rehabilitation. The application of appropriate work design principles, during the design of tools and workstations that involve the use of the hand and fingers, may minimize upper …
-
Development of an Open Source Prosthetic Hand Platform
… actuation, multiple actuation modes, sensing of forces at the individual fingers, providing force feedback to the user, and control of finger actuation through a variety of control inputs.</p> <p> After going through several iterations of hand’s mechanical components, electronics, and firmware a …
-
The influence of methylphenidate on heart rate and brain connectivity
… fatigue thresholds, I used a MRI compatible handgrip device which recorded grip force output during a fatiguing handgrip task. To measure HR before and during handgrip exercise I used a MRI compatible electrocardiogram (ECG) machine. My first study aimed to determine the effect of MA on resting …