Force Control During the Precision Grip Translates to Virtual Reality. 2022

Clara Gunter, and Yiming Liu, and Raz Leib, and David Franklin

When grasping and manipulating objects we implicitly adapt grip forces according to the physical parameters of the object. We integrate visual, cutaneous, and force feedback to estimate these parameters and adapt our control accordingly. Using virtual reality, both feedback integration and control can be investigated in ways that are not possible using real-life objects. Here, we present our custom-built virtual reality setup and show its validity for use in human studies of fine motor control. Participants grasped and lifted virtual objects with different weights. We show that, consistent with lifting real objects, all participants adapt their grip forces to the object mass, and do so on a trial-by-trial basis. Compared to similar studies with real objects and full feedback, grip forces were increased, and adaptation required more trials. This study successfully demonstrated that grip force control in the precision grip translates to virtual reality. While our setup can be used for similar work in the future, subsequent virtual reality experiments should include a longer adaptation phase compared to classic setups.

UI MeSH Term Description Entries
D005246 Feedback A mechanism of communication within a system in that the input signal generates an output response which returns to influence the continued activity or productivity of that system. Feedbacks
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000076142 Virtual Reality Using computer technology to create and maintain an environment and project a user's physical presence in that environment allowing the user to interact with it. Virtual Reality, Educational,Virtual Reality, Instructional,Educational Virtual Realities,Educational Virtual Reality,Instructional Virtual Realities,Instructional Virtual Reality,Realities, Instructional Virtual,Reality, Educational Virtual,Reality, Instructional Virtual,Reality, Virtual,Virtual Realities, Educational,Virtual Realities, Instructional
D013995 Time The dimension of the physical universe which, at a given place, orders the sequence of events. (McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed) Effects, Long-Term,Effects, Longterm,Long-Term Effects,Longterm Effects,Effect, Long-Term,Effect, Longterm,Effects, Long Term,Long Term Effects,Long-Term Effect,Longterm Effect
D055595 Mechanical Phenomena The properties and processes of materials that affect their behavior under force. Mechanical Concepts,Mechanical Processes,Mechanical Phenomenon,Mechanical Process,Concept, Mechanical,Concepts, Mechanical,Mechanical Concept,Phenomena, Mechanical,Phenomenon, Mechanical,Process, Mechanical,Processes, Mechanical
D018737 Hand Strength Force exerted when gripping or grasping. Grasp,Grip,Grip Strength,Hand Grip Strength,Grasps,Grip Strength, Hand,Grips,Strength, Grip,Strength, Hand,Strength, Hand Grip

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