title: Manual (a)symmetries in grasp posture planning: a short review.
abstract: Many activities of daily living require that we physically interact with one or more objects. Object manipulation provides an intriguing domain in which the presence and extent of manual asymmetries can be studied on a motor planning and a motor execution level. In this literature review we present a state of the art for manual asymmetries at the level of motor planning during object manipulation. First, we introduce pioneering work on grasp posture planning. We then sketch the studies investigating the impact of future task demands during unimanual and bimanual object manipulation tasks in healthy adult populations. In sum, in contrast to motor execution, there is little evidence for hand-based performance differences in grasp posture planning. We discuss potential reasons for the lack of manual asymmetries in motor planning and outline potential avenues of future research.
authors.affiliation: Neurocognition and Action Research Group, Faculty of Psychology and Sport Sciences, Bielefeld University Bielefeld, Germany ; Center of Excellence Cognitive Interaction Technology, Bielefeld University Bielefeld, Germany.
authors.forename: Christian
authors.initials: C
authors.lastname: Seegelke
authors.affiliation: Robotics Research Centre, School of Mechanical and Aerospace Engineering, Nanyang Technological University Singapore, Singapore.
authors.forename: Charmayne Mary Lee
authors.initials: CM
authors.lastname: Hughes
authors.affiliation: Neurocognition and Action Research Group, Faculty of Psychology and Sport Sciences, Bielefeld University Bielefeld, Germany ; Center of Excellence Cognitive Interaction Technology, Bielefeld University Bielefeld, Germany ; Research Institute for Cognition and Robotics (CoR-Lab), Bielefeld University Bielefeld, Germany.
authors.forename: Thomas
authors.initials: T
authors.lastname: Schack
keywords: bimanual coordination; end-state comfort; grasping; manual asymmetries; motor planning