Janneke Lommertzen

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Grasping an object successfully implies avoiding colliding into it before the hand is closed around the object. The present study focuses on prehension kinematics that typically reflect collision-avoidance characteristics of grasping movements. Twelve participants repeatedly grasped vertically-oriented cylinders of various heights, starting from two(More)
The human action system has a layered structure supporting a cascade of partially overlapping information processes in multiple, interlinked representational spaces. Apart from the mirror neuron system which through motor resonance mediates one’s understanding of the action goals of one’s partner, perceptuomotor rules like Fitts’ law, the Isogony Principle,(More)
We investigated here how partly occluded stimuli affect early and late prehension kinematics. Stimuli were pictures of partly occluded cylindrical objects with indentations or protrusions at regular intervals along the contour. They diverged into two plausible completions: a local completion, comprising a linear continuation of the contour, and a global(More)
The current study focused on the time course of the effects of the rod-and-frame illusion (RFI) on the kinematics of targeted forearm rotations. Participants were asked to reproduce perceived rod orientations by propelling a hand-held cylinder forward while rotating it to the target orientation. Rod and frame orientations were systematically varied, and(More)
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