Search for dissertations about: "fingertip force"

Showing result 1 - 5 of 6 swedish dissertations containing the words fingertip force.

  1. 1. Tactile Sensory Control of Dexterous Manipulation in Humans

    University dissertation from Umeå : Integrativ medicinsk biologi

    Author : Ingvars Birznieks; Umeå universitet.; [2003]
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Physiology; cutaneous sensibility; tactile afferents; fingertip force; grasp stability; human hand; manipulation; object shape; precision grip; sensorimotor control; coding; Fysiologi; MEDICINE Physiology and pharmacology Physiology; MEDICIN Fysiologi och farmakologi Fysiologi; fysiologi; Physiology;

    Abstract : During dexterous manipulation with the fingertips, forces are applied to objects' surfaces. To achieve grasp stability, these forces must be appropriate given the properties of the objects and the skin of the fingertips, and the nature of the task. READ MORE

  2. 2. To grip and not to slip sensorimotor mechanisms in reactive control of grasp stability

    University dissertation from Umeå : Umeå Universitet

    Author : Charlotte Häger Ross; Umeå universitet.; [1995]
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; human; hand; precision grip; grasp force; friction; cutaneous mechanoreceptors; sensorimotor integration; motor control;

    Abstract : The reactive control of fingertip forces maintaining grasp stability was examined in man during a prehensile task. Blindfolded subjects used the precision grip between the tips of index finger and thumb to restrain an object that was subjected to unpredictable load forces. These were delivered tangential to the parallel grip surfaces of the object. READ MORE

  3. 3. Dexterous Grasping Representation and Optimization

    University dissertation from Stockholm : KTH Royal Institute of Technology

    Author : Kaiyu Hang; KTH.; [2016]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Dexterous Grasping; Hierarchical Fingertip Space; Grasp Planning; Grasp Adaptation; Datalogi; Computer Science;

    Abstract : Many robot object interactions require that an object is firmly held, and that the grasp remains stable during the whole manipulation process. Based on grasp wrench space, this thesis address the problems of measuring the grasp sensitivity against friction changes, planning contacts and hand configurations on mesh and point cloud representations of arbitrary objects, planning adaptable grasps and finger gaiting for keeping a grasp stable under various external disturbances, as well as learning of grasping manifolds for more accurate reachability and inverse kinematics computation for multifingered grasping. READ MORE

  4. 4. Neural correlates of hand function in typically developing individuals and children with unilateral cerebral palsy

    University dissertation from Stockholm : Karolinska Institutet, Dept of Women's and Children's Health

    Author : Linda Holmström; Karolinska Institutet.; Karolinska Institutet.; [2011]
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES;

    Abstract : The ability to use our hands is crucial in order to achieve the goals of almost all activities in everyday life. Most of us learn how to handle objects and adjust our hand and finger movements to perform increasingly difficult tasks during childhood and adolescence. READ MORE

  5. 5. A multidisciplinary system identification of the human precision grip

    University dissertation from Stockholm : Karolinska Institutet, Department of Women's and Children's Health

    Author : Anders Fagergren; Karolinska Institutet.; Karolinska Institutet.; [2003]
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES;

    Abstract : This thesis focus on the unique human ability to pick up and manipulate small objects using the precision grip, i.e., the fine grip between the index finger and the thumb. This ability is formed by the interplay between the complex biomechanical machinery of the hand and the neural networks within the central nervous system. READ MORE